fix(backend): 修复转发监听 IP 为 IPv6 时报missing port in address (#397)

* fix(backend): handle IPv6 forward bind IP ports

* test(handler): add IPv6 bindIP test cases for forward service config

---------

Co-authored-by: sagit <36596628+Sagit-chu@users.noreply.github.com>
Co-authored-by: sagitchu <sagitchu@gmail.com>

.github/ISSUES/forward-show-tunnel-ratio.md

@@ -0,0 +1,62 @@
+# 功能请求：在规则页面显示隧道倍率
+
+## 问题描述
+
+当前规则（Forward）页面在列表中显示隧道名称，但**不显示隧道的流量倍率（trafficRatio）**。管理员在管理规则时无法快速查看该规则所使用的隧道倍率信息，需要跳转到隧道页面才能查看。
+
+## 期望行为
+
+在规则列表页面中，在隧道名称旁边或单独列显示该隧道的流量倍率（例如：`1x`, `0.5x`, `2x`）。
+
+## 建议实现位置
+
+### 前端修改
+
+1. **`vite-frontend/src/pages/forward.tsx`**
+   - 在 `Forward` interface 中添加 `tunnelTrafficRatio?: number` 字段
+   - 在表格列中添加倍率显示（可以在隧道名称 Chip 旁边或单独一列）
+   - 从 `userTunnel` 或 `getTunnelList` API 获取隧道倍率信息
+
+2. **显示格式建议**
+   ```tsx
+   <Chip className="...">
+     {forward.tunnelName} ({forward.tunnelTrafficRatio}x)
+   </Chip>
+   ```
+   或者单独一列：
+   ```tsx
+   <TableCell>
+     {forward.tunnelTrafficRatio}x
+   </TableCell>
+   ```
+
+### 后端修改
+
+1. **`go-backend/internal/http/handler/handler.go`**
+   - 在 `forwardList` 接口返回中添加隧道的 `trafficRatio` 字段
+   - 需要在查询 Forward 时 JOIN Tunnel 表获取倍率信息
+
+2. **或者在前端加载规则后，批量获取隧道信息**
+   - 调用 `getTunnelList` 获取所有隧道信息
+   - 根据 `tunnelId` 匹配倍率
+
+## 相关文件
+
+- 前端：`vite-frontend/src/pages/forward.tsx`
+- 前端类型：`vite-frontend/src/api/types.ts`
+- 后端：`go-backend/internal/http/handler/handler.go`
+- 隧道类型定义：`vite-frontend/src/api/types.ts` (TunnelApiItem)
+
+## 优先级
+
+中等 - 不影响核心功能，但能提升管理效率
+
+## 截图参考
+
+隧道页面已显示倍率：
+- 位置：隧道卡片统计信息区域
+- 显示格式：`流量倍率 {trafficRatio}x`
+
+---
+
+**Labels**: `enhancement`, `frontend`, `backend`, `ui/ux`

.github/workflows/ci-build.yml

@@ -0,0 +1,107 @@
+name: CI Build Check
+
+on:
+  push:
+    branches: ['**']
+  pull_request:
+    branches: ['**']
+
+jobs:
+  frontend:
+    name: Build Frontend
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: vite-frontend
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20.19.0'
+
+      - name: Install dependencies
+        run: npm install --legacy-peer-deps
+
+      - name: Build
+        run: npm run build
+
+  backend:
+    name: Build Go Backend
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: go-backend
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.23'
+          cache-dependency-path: go-backend/go.sum
+
+      - name: Download dependencies
+        run: go mod download
+
+      - name: Build
+        run: go build -v ./...
+
+  backend-postgres-contract:
+    name: Go Backend PostgreSQL Contract
+    runs-on: ubuntu-latest
+    services:
+      postgres:
+        image: postgres:17
+        env:
+          POSTGRES_USER: flux_test
+          POSTGRES_PASSWORD: flux_test_pass
+          POSTGRES_DB: flux_test
+        ports:
+          - 5432:5432
+        options: >-
+          --health-cmd "pg_isready -U flux_test -d flux_test"
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 10
+    defaults:
+      run:
+        working-directory: go-backend
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.23'
+          cache-dependency-path: go-backend/go.sum
+
+      - name: Download dependencies
+        run: go mod download
+
+      - name: Run PostgreSQL contract test
+        env:
+          FLVX_POSTGRES_TEST_DSN: 'postgres://flux_test:flux_test_pass@127.0.0.1:5432/flux_test?sslmode=disable'
+        run: go test ./tests/contract -run TestPostgresNodeCreateRepairsMissingIDDefaultContract -count=1
+
+  agent:
+    name: Build Agent
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: go-gost
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.23'
+          cache-dependency-path: go-gost/go.sum
+
+      - name: Download dependencies
+        run: go mod download
+
+      - name: Build
+        run: go build -v .

.github/workflows/deploy-docs.yml

@@ -0,0 +1,43 @@
+name: Deploy Docs
+on:
+  push:
+    branches:
+      - main
+      - master
+      - beta
+    paths:
+      - 'doc/**'
+      - 'mkdocs.yml'
+
+permissions:
+  contents: write
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Configure Git Credentials
+        run: |
+          git config user.name github-actions[bot]
+          git config user.email 41898282+github-actions[bot]@users.noreply.github.com
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: 3.x
+
+      - run: echo "cache_id=$(date --utc '+%V')" >> $GITHUB_ENV 
+
+      - uses: actions/cache@v4
+        with:
+          key: mkdocs-material-${{ env.cache_id }}
+          path: .cache
+          restore-keys: |
+            mkdocs-material-
+
+      - name: Install MkDocs and Material Theme
+        run: pip install mkdocs-material
+
+      - name: Build and Deploy
+        run: mkdocs gh-deploy --force

.github/workflows/docker-build.yml

@@ -1,192 +1,434 @@
-name: Build and Push Vue or Spring Boot Images
+name: Build and Push Images
+
+env:
+  VERSION: "2.0.7-beta"  # 分支推送时使用的默认版本
+  REGISTRY: ghcr.io
 
 on:
   push:
-    branches:
-      - main
-    paths:
-      - 'vue-frontend/**'
-      - 'vite-frontend/**'
-      - 'springboot-backend/**'
-      - 'go-gost/**'
-      - 'android-app/**'
-      - '.github/workflows/docker-build.yml'
+    tags:
+      - '[0-9]*'  # 匹配 2.0.8, 2.0.8-beta 等格式
 
 jobs:
-  build-gost:
-    if: contains(github.event.head_commit.message, '[skip gost]') == false
-    name: Build & Compress GOST Binary
+  check-version:
+    name: Check Version and Decide Build
     runs-on: ubuntu-latest
-    permissions:
-      contents: write
+    outputs:
+      version: ${{ steps.version.outputs.version }}
+      should_build: ${{ steps.version.outputs.should_build }}
+      should_build_gost: ${{ steps.version.outputs.should_build_gost }}
+      is_tag: ${{ steps.version.outputs.is_tag }}
+      image_owner: ${{ steps.version.outputs.image_owner }}
     steps:
-      - uses: actions/checkout@v3
-
-      - name: Check for GOST changes
-        uses: dorny/paths-filter@v2
-        id: gost-changes
+      - uses: actions/checkout@v4
         with:
-          filters: |
-            gost:
-              - 'go-gost/**'
+          fetch-depth: 0
+
+      - name: Determine version and build strategy
+        id: version
+        run: |
+          # 镜像 owner 需要小写
+          IMAGE_OWNER=$(echo "${{ github.repository_owner }}" | tr '[:upper:]' '[:lower:]')
+          echo "image_owner=$IMAGE_OWNER" >> $GITHUB_OUTPUT
+
+          if [[ "${{ github.ref_type }}" == "tag" ]]; then
+            # Tag 触发：直接使用 tag 名作为版本，全量构建
+            VERSION="${{ github.ref_name }}"
+            echo "🏷️ Tag trigger detected: $VERSION"
+            echo "version=$VERSION" >> $GITHUB_OUTPUT
+            echo "is_tag=true" >> $GITHUB_OUTPUT
+            echo "should_build=true" >> $GITHUB_OUTPUT
+            echo "should_build_gost=true" >> $GITHUB_OUTPUT
+          else
+            # 分支触发：使用 env.VERSION，检查是否需要构建
+            VERSION="${{ env.VERSION }}"
+            echo "🌿 Branch trigger detected, using version: $VERSION"
+            echo "version=$VERSION" >> $GITHUB_OUTPUT
+            echo "is_tag=false" >> $GITHUB_OUTPUT
+
+            # 检查 tag 是否已存在
+            if git rev-parse "$VERSION" >/dev/null 2>&1; then
+              echo "Tag $VERSION already exists"
+              echo "should_build=false" >> $GITHUB_OUTPUT
+
+              # 检查 go-gost 目录是否有变化
+              TAG_COMMIT=$(git rev-list -n 1 "$VERSION")
+              if git diff --quiet --ignore-all-space --ignore-blank-lines $TAG_COMMIT HEAD -- go-gost/ 2>/dev/null; then
+                echo "✅ GOST files unchanged since tag"
+                echo "should_build_gost=false" >> $GITHUB_OUTPUT
+              else
+                echo "🔄 Detected changes in go-gost directory"
+                git diff --stat $TAG_COMMIT HEAD -- go-gost/ || true
+                echo "should_build_gost=true" >> $GITHUB_OUTPUT
+              fi
+            else
+              echo "Tag $VERSION does not exist, will build all components"
+              echo "should_build=true" >> $GITHUB_OUTPUT
+              echo "should_build_gost=true" >> $GITHUB_OUTPUT
+            fi
+          fi
+
+  build-gost:
+    name: Build & Compress GOST Binary
+    needs: check-version
+    if: needs.check-version.outputs.should_build_gost == 'true'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
 
       - name: Set up Go
-        if: steps.gost-changes.outputs.gost == 'true'
-        uses: actions/setup-go@v4
+        uses: actions/setup-go@v5
         with:
-          go-version: '1.21'
+          go-version: '1.23'
 
       - name: Cache Go modules
-        if: steps.gost-changes.outputs.gost == 'true'
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             ~/.cache/go-build
             ~/go/pkg/mod
-          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          key: ${{ runner.os }}-go-${{ hashFiles('go-gost/go.sum') }}
           restore-keys: |
             ${{ runner.os }}-go-
 
       - name: Install UPX
-        if: steps.gost-changes.outputs.gost == 'true'
         run: |
-          wget https://github.com/upx/upx/releases/download/v4.2.1/upx-4.2.1-amd64_linux.tar.xz
+          wget -q https://github.com/upx/upx/releases/download/v4.2.1/upx-4.2.1-amd64_linux.tar.xz
           tar -xf upx-4.2.1-amd64_linux.tar.xz
           sudo mv upx-4.2.1-amd64_linux/upx /usr/local/bin/
           rm -rf upx-4.2.1-amd64_linux*
 
-      - name: Build GOST binary
-        if: steps.gost-changes.outputs.gost == 'true'
+      - name: Build GOST binary (AMD64)
         working-directory: ./go-gost
-        run: |
-          CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags="-s -w" -o gost
+        run: CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags="-s -w -X main.version=${{ needs.check-version.outputs.version }}" -o gost-amd64
+
+      - name: Build GOST binary (ARM64)
+        working-directory: ./go-gost
+        run: CGO_ENABLED=0 GOOS=linux GOARCH=arm64 go build -ldflags="-s -w -X main.version=${{ needs.check-version.outputs.version }}" -o gost-arm64
 
       - name: Compress with UPX
-        if: steps.gost-changes.outputs.gost == 'true'
         working-directory: ./go-gost
         run: |
-          upx --best --lzma gost
+          upx --best --lzma gost-amd64
+          upx --best --lzma gost-arm64
 
-      - name: Create or Update Release
-        if: steps.gost-changes.outputs.gost == 'true'
+      - name: Generate SHA256 checksums
+        working-directory: ./go-gost
+        run: |
+          sha256sum gost-amd64 > gost-amd64.sha256
+          sha256sum gost-arm64 > gost-arm64.sha256
+
+      - name: Upload GOST AMD64 artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: gost-binary-amd64
+          path: ./go-gost/gost-amd64
+
+      - name: Upload GOST ARM64 artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: gost-binary-arm64
+          path: ./go-gost/gost-arm64
+
+      - name: Upload GOST AMD64 checksum artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: gost-checksum-amd64
+          path: ./go-gost/gost-amd64.sha256
+
+      - name: Upload GOST ARM64 checksum artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: gost-checksum-arm64
+          path: ./go-gost/gost-arm64.sha256
+
+  build-vite:
+    name: Build & Push Vite Frontend
+    needs: check-version
+    if: needs.check-version.outputs.should_build == 'true'
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Prepare build args
+        run: |
+          VERSION="${{ needs.check-version.outputs.version }}"
+          {
+            echo "VITE_GITHUB_REPO=https://github.com/${{ github.repository }}"
+            echo "VITE_APP_VERSION=$VERSION"
+          } > ./vite-frontend/.env.production
+
+      - name: Build and push Vite Docker images
+        run: |
+          VERSION="${{ needs.check-version.outputs.version }}"
+          OWNER="${{ needs.check-version.outputs.image_owner }}"
+
+          docker buildx build \
+            --platform linux/amd64,linux/arm64 \
+            --push \
+            -t ${{ env.REGISTRY }}/${OWNER}/vite-frontend:latest \
+            -t ${{ env.REGISTRY }}/${OWNER}/vite-frontend:${VERSION} \
+            ./vite-frontend
+
+  build-go-backend:
+    name: Build & Push Go Backend
+    needs: check-version
+    if: needs.check-version.outputs.should_build == 'true'
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.23'
+
+      - name: Cache Go dependencies
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cache/go-build
+            ~/go/pkg/mod
+          key: ${{ runner.os }}-go-backend-${{ hashFiles('go-backend/go.sum') }}
+          restore-keys: ${{ runner.os }}-go-backend-
+
+      - name: Download dependencies
+        working-directory: ./go-backend
+        run: go mod download
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push Go backend Docker images
+        run: |
+          VERSION="${{ needs.check-version.outputs.version }}"
+          OWNER="${{ needs.check-version.outputs.image_owner }}"
+
+          docker buildx build \
+            --platform linux/amd64,linux/arm64 \
+            --push \
+            -t ${{ env.REGISTRY }}/${OWNER}/flux-panel-backend:latest \
+            -t ${{ env.REGISTRY }}/${OWNER}/flux-panel-backend:${VERSION} \
+            ./go-backend
+
+  create-release:
+    name: Create Release (Tag Only)
+    needs: [check-version, build-gost, build-vite, build-go-backend]
+    if: needs.check-version.outputs.is_tag == 'true'
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Download GOST AMD64 binary
+        uses: actions/download-artifact@v4
+        with:
+          name: gost-binary-amd64
+          path: ./artifacts/amd64
+
+      - name: Download GOST ARM64 binary
+        uses: actions/download-artifact@v4
+        with:
+          name: gost-binary-arm64
+          path: ./artifacts/arm64
+
+      - name: Download GOST AMD64 checksum
+        uses: actions/download-artifact@v4
+        with:
+          name: gost-checksum-amd64
+          path: ./artifacts/
+
+      - name: Download GOST ARM64 checksum
+        uses: actions/download-artifact@v4
+        with:
+          name: gost-checksum-arm64
+          path: ./artifacts/
+
+      - name: Prepare release files
+
+        run: |
+          VERSION="${{ needs.check-version.outputs.version }}"
+          OWNER="${{ needs.check-version.outputs.image_owner }}"
+          REPO="${{ github.repository }}"
+
+          # 移动二进制文件
+          mv ./artifacts/amd64/gost-amd64 ./artifacts/gost-amd64
+          mv ./artifacts/arm64/gost-arm64 ./artifacts/gost-arm64
+
+          # 复制并修改 docker-compose 文件
+          cp docker-compose-v4.yml ./artifacts/docker-compose-v4.yml
+          cp docker-compose-v6.yml ./artifacts/docker-compose-v6.yml
+
+          # 替换镜像地址为 GHCR
+          sed -i "s|image: .*flux-panel-backend:[^[:space:]]*|image: ${{ env.REGISTRY }}/${OWNER}/flux-panel-backend:${VERSION}|g" ./artifacts/docker-compose-v4.yml
+          sed -i "s|image: .*vite-frontend:[^[:space:]]*|image: ${{ env.REGISTRY }}/${OWNER}/vite-frontend:${VERSION}|g" ./artifacts/docker-compose-v4.yml
+          sed -i "s|image: .*flux-panel-backend:[^[:space:]]*|image: ${{ env.REGISTRY }}/${OWNER}/flux-panel-backend:${VERSION}|g" ./artifacts/docker-compose-v6.yml
+          sed -i "s|image: .*vite-frontend:[^[:space:]]*|image: ${{ env.REGISTRY }}/${OWNER}/vite-frontend:${VERSION}|g" ./artifacts/docker-compose-v6.yml
+
+          # 复制并修改安装脚本
+          cp install.sh ./artifacts/install.sh
+          cp panel_install.sh ./artifacts/panel_install.sh
+
+          # 替换仓库地址和版本号
+          sed -i "s|bqlpfy/flux-panel|${REPO}|g" ./artifacts/install.sh
+          sed -i "s|bqlpfy/flux-panel|${REPO}|g" ./artifacts/panel_install.sh
+          sed -i "s|2.0.7-beta|${VERSION}|g" ./artifacts/install.sh
+          sed -i "s|2.0.7-beta|${VERSION}|g" ./artifacts/panel_install.sh
+
+          # 注入固定版本号，使从 Release 页下载的脚本只安装该版本
+          sed -i "s|^PINNED_VERSION=\"\"|PINNED_VERSION=\"${VERSION}\"|" ./artifacts/install.sh
+          sed -i "s|^PINNED_VERSION=\"\"|PINNED_VERSION=\"${VERSION}\"|" ./artifacts/panel_install.sh
+
+      - name: Create Release
         env:
           GH_TOKEN: ${{ github.token }}
         run: |
-          # 确保 tag 指向当前 commit
-          git tag -f gost-latest ${{ github.sha }}
-          git push origin gost-latest --force
+          VERSION="${{ needs.check-version.outputs.version }}"
+          OWNER="${{ needs.check-version.outputs.image_owner }}"
 
-          # 检查 release 是否存在，不存在则创建
-          if gh release view gost-latest 2>/dev/null; then
-            echo "Release exists, will update assets"
-          else
-            echo "Release not found, creating new release"
-            gh release create gost-latest gost-latest \
-              --title "GOST Binary Latest" \
-              --notes "GOST binary compiled from commit ${{ github.sha }}
-          
-          - Platform: Linux AMD64
-          - Compressed with UPX
-          - Build date: ${{ github.event.head_commit.timestamp }}" \
-              --repo ${{ github.repository }}
-          fi
+          # 获取 commit 信息
+          COMMIT_MSG=$(git log -1 --pretty=format:"%s")
+          COMMIT_AUTHOR=$(git log -1 --pretty=format:"%an")
+          COMMIT_DATE=$(git log -1 --pretty=format:"%ai")
 
-          # 上传 asset 并覆盖同名文件
-          gh release upload gost-latest ./go-gost/gost --clobber
+          # 创建 release
+          gh release create "${VERSION}" \
+            --title "Release ${VERSION}" \
+            --notes "## 📝 Release Information
 
+          - **Version**: ${VERSION}
+          - **Commit**: [\`${GITHUB_SHA:0:7}\`](https://github.com/${{ github.repository }}/commit/${{ github.sha }})
+          - **Author**: ${COMMIT_AUTHOR}
+          - **Date**: ${COMMIT_DATE}
+          - **Message**: ${COMMIT_MSG}
 
-  build-vite:
-    if: contains(github.event.head_commit.message, '[skip vite]') == false
-    name: Build & Push Vite Frontend
+          ## 📦 Docker Images
+
+          \`\`\`bash
+          # Backend
+          docker pull ${{ env.REGISTRY }}/${OWNER}/flux-panel-backend:${VERSION}
+
+          # Frontend
+          docker pull ${{ env.REGISTRY }}/${OWNER}/vite-frontend:${VERSION}
+          \`\`\`
+
+          ## 🚀 Quick Install
+
+          **Panel (安装此版本 ${VERSION}):**
+          \`\`\`bash
+          curl -L https://github.com/${{ github.repository }}/releases/download/${VERSION}/panel_install.sh -o panel_install.sh && chmod +x panel_install.sh && ./panel_install.sh
+          \`\`\`
+
+          **Node (安装此版本 ${VERSION}):**
+          \`\`\`bash
+          curl -L https://github.com/${{ github.repository }}/releases/download/${VERSION}/install.sh -o install.sh && chmod +x install.sh && ./install.sh
+          \`\`\`
+
+          **安装最新版:**
+          \`\`\`bash
+          # 面板端
+          curl -L https://raw.githubusercontent.com/${{ github.repository }}/main/panel_install.sh -o panel_install.sh && chmod +x panel_install.sh && ./panel_install.sh
+          # 节点端
+          curl -L https://raw.githubusercontent.com/${{ github.repository }}/main/install.sh -o install.sh && chmod +x install.sh && ./install.sh
+          \`\`\`" \
+            --repo ${{ github.repository }}
+
+          # 上传所有文件到 release
+          echo "📤 上传 GOST 二进制文件..."
+          gh release upload "${VERSION}" ./artifacts/gost-amd64 --clobber
+          gh release upload "${VERSION}" ./artifacts/gost-arm64 --clobber
+
+          echo "📤 上传 GOST 校验文件..."
+          gh release upload "${VERSION}" ./artifacts/gost-amd64.sha256 --clobber
+          gh release upload "${VERSION}" ./artifacts/gost-arm64.sha256 --clobber
+
+          echo "📤 上传安装脚本..."
+          gh release upload "${VERSION}" ./artifacts/install.sh --clobber
+          gh release upload "${VERSION}" ./artifacts/panel_install.sh --clobber
+
+          echo "📤 上传 Docker Compose 配置文件..."
+          gh release upload "${VERSION}" ./artifacts/docker-compose-v4.yml --clobber
+          gh release upload "${VERSION}" ./artifacts/docker-compose-v6.yml --clobber
+
+          echo "✅ Release ${VERSION} 创建完成"
+
+  update-release-gost:
+    name: Update GOST Binaries in Release
+    needs: [check-version, build-gost]
+    if: needs.check-version.outputs.is_tag == 'false' && needs.check-version.outputs.should_build == 'false' && needs.check-version.outputs.should_build_gost == 'true'
     runs-on: ubuntu-latest
+    permissions:
+      contents: write
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
-      - name: Check for Vite changes
-        uses: dorny/paths-filter@v2
-        id: vite-changes
+      - name: Download GOST AMD64 binary
+        uses: actions/download-artifact@v4
         with:
-          filters: |
-            vite:
-              - 'vite-frontend/**'
+          name: gost-binary-amd64
+          path: ./artifacts/amd64
 
-      - name: Set up Node.js
-        if: steps.vite-changes.outputs.vite == 'true'
-        uses: actions/setup-node@v4
+      - name: Download GOST ARM64 binary
+        uses: actions/download-artifact@v4
         with:
-          node-version: 20
+          name: gost-binary-arm64
+          path: ./artifacts/arm64
 
-      - name: Set up Docker Buildx
-        if: steps.vite-changes.outputs.vite == 'true'
-        uses: docker/setup-buildx-action@v2
-
-      - name: Log in to DockerHub
-        if: steps.vite-changes.outputs.vite == 'true'
-        uses: docker/login-action@v2
+      - name: Download GOST AMD64 checksum
+        uses: actions/download-artifact@v4
         with:
-          username: ${{ secrets.DOCKER_HUB_USERNAME }}
-          password: ${{ secrets.DOCKER_HUB_TOKEN }}
+          name: gost-checksum-amd64
+          path: ./artifacts/
 
-      - name: Build and push Vite multi-arch image
-        if: steps.vite-changes.outputs.vite == 'true'
+      - name: Download GOST ARM64 checksum
+        uses: actions/download-artifact@v4
+        with:
+          name: gost-checksum-arm64
+          path: ./artifacts/
+
+      - name: Rename binaries
         run: |
-          docker buildx build \
-            --platform linux/amd64 \
-            --push \
-            -t bqlpfy/vite-frontend \
-            ./vite-frontend
+          mv ./artifacts/amd64/gost-amd64 ./artifacts/gost-amd64
+          mv ./artifacts/arm64/gost-arm64 ./artifacts/gost-arm64
 
-  build-java:
-    if: contains(github.event.head_commit.message, '[skip java]') == false
-    name: Build & Push Spring Boot Backend
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-
-      - name: Check for Java changes
-        uses: dorny/paths-filter@v2
-        id: java-changes
-        with:
-          filters: |
-            java:
-              - 'springboot-backend/**'
-
-      - name: Set up JDK and Maven
-        if: steps.java-changes.outputs.java == 'true'
-        uses: actions/setup-java@v3
-        with:
-          java-version: 21
-          distribution: 'temurin'
-
-      - name: Cache Maven dependencies
-        if: steps.java-changes.outputs.java == 'true'
-        uses: actions/cache@v3
-        with:
-          path: ~/.m2
-          key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
-          restore-keys: ${{ runner.os }}-m2
-
-      - name: Build Java JAR
-        if: steps.java-changes.outputs.java == 'true'
-        working-directory: ./springboot-backend
-        run: mvn clean package -DskipTests
-
-      - name: Set up Docker Buildx
-        if: steps.java-changes.outputs.java == 'true'
-        uses: docker/setup-buildx-action@v2
-
-      - name: Log in to DockerHub
-        if: steps.java-changes.outputs.java == 'true'
-        uses: docker/login-action@v2
-        with:
-          username: ${{ secrets.DOCKER_HUB_USERNAME }}
-          password: ${{ secrets.DOCKER_HUB_TOKEN }}
-
-      - name: Build and push Java multi-arch image
-        if: steps.java-changes.outputs.java == 'true'
+      - name: Update GOST binaries in Release
+        env:
+          GH_TOKEN: ${{ github.token }}
         run: |
-          docker buildx build \
-            --platform linux/amd64 \
-            --push \
-            -t bqlpfy/springboot-backend \
-            ./springboot-backend
+          VERSION="${{ needs.check-version.outputs.version }}"
+
+          echo "🔄 更新 Release ${VERSION} 中的 GOST 二进制文件..."
+
+          gh release upload "${VERSION}" ./artifacts/gost-amd64 --clobber
+          gh release upload "${VERSION}" ./artifacts/gost-arm64 --clobber
+
+          echo "📤 上传 GOST 校验文件..."
+          gh release upload "${VERSION}" ./artifacts/gost-amd64.sha256 --clobber
+          gh release upload "${VERSION}" ./artifacts/gost-arm64.sha256 --clobber
+
+          echo "✅ GOST 二进制文件更新完成"
+

.github/workflows/publish-skill.yml

@@ -0,0 +1,48 @@
+name: Publish Skill to npm
+
+on:
+  push:
+    tags:
+      - 'v*'
+  workflow_dispatch:
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      id-token: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          registry-url: 'https://registry.npmjs.org'
+
+      - name: Get version from tag
+        id: version
+        run: |
+          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
+            VERSION=$(node -p "require('./skills/flvx-api/package.json').version")
+          else
+            VERSION="${GITHUB_REF#refs/tags/v}"
+          fi
+          echo "version=$VERSION" >> $GITHUB_OUTPUT
+          echo "Publishing skill version: $VERSION"
+
+      - name: Publish to npm
+        working-directory: skills/flvx-api
+        run: npm publish --provenance --access public
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+
+      - name: Create GitHub Release
+        if: github.event_name == 'push'
+        uses: softprops/action-gh-release@v1
+        with:
+          name: Skill v${{ steps.version.outputs.version }}
+          generate_release_notes: true
+          files: skills/flvx-api/package.json

.gitignore

@@ -62,6 +62,9 @@ go-gost/ss/
 .classpath
 .project
 .settings/
+
+# OpenCode session metadata
+.entire/
 bin/
 tmp/
 *.swp
@@ -176,6 +179,8 @@ build/
 *.so
 *.dylib
 your_app.exe
+go-backend/paneld
+go-gost/gost
 
 # Go 测试二进制文件
 *.test
@@ -254,8 +259,18 @@ gitee/
 # 证书文件
 *.crt
 *.cert
-android-app/
-ios-app/
 doraemon.jks
-flux.ipa
-device.id
+device.id
+commit.sh
+.opencode/
+analysis/
+sql/
+!go-backend/internal/store/sqlite/sql/
+!go-backend/internal/store/sqlite/sql/schema.sql
+!go-backend/internal/store/sqlite/sql/data.sql
+!go-backend/internal/store/postgres/sql/
+!go-backend/internal/store/postgres/sql/schema.sql
+!go-backend/internal/store/postgres/sql/data.sql
+go-backend/gost.db-shm
+.gitignore
+go-backend/gost.db-wal

AGENTS.md

@@ -0,0 +1,123 @@
+# PROJECT KNOWLEDGE BASE
+
+**Generated:** Tue Mar 24 2026
+**Commit:** 8ebde9d
+**Branch:** main
+**Tag:** 2.1.9-rc10
+
+## OVERVIEW
+FLVX (formerly Flux Panel) is a traffic forwarding management system built on a forked GOST v3 stack. It ships as a Go-based admin API (SQLite/PostgreSQL) + Vite/React UI + Go forwarding agent, with optional mobile WebView wrappers.
+
+## STRUCTURE
+```
+./
+├── go-gost/               # Go forwarding agent (forked gost + local x/)
+│   └── x/                 # Local fork of github.com/go-gost/x (replace => ./x)
+├── go-backend/            # Go Admin API (GORM + SQLite/PostgreSQL, net/http)
+│   └── tests/contract/    # Integration/contract tests
+├── vite-frontend/         # React/Vite dashboard (shadcn bridge + Tailwind v4)
+│   └── src/shadcn-bridge/heroui/  # HeroUI-compatible facade
+├── docker-compose-v4.yml  # Panel deploy (IPv4-only bridge)
+├── docker-compose-v6.yml  # Panel deploy (IPv6-enabled bridge)
+├── panel_install.sh       # Panel installer/upgrader (downloads compose)
+├── install.sh             # Node installer/upgrader (downloads gost binary)
+└── .github/workflows/     # CI: build/test + Docker push + release artifacts
+```
+
+## WHERE TO LOOK
+| Task | Location | Notes |
+|------|----------|-------|
+| **Deploy (Docker)** | `docker-compose-v4.yml` | Env: `JWT_SECRET`, `BACKEND_PORT`, `FRONTEND_PORT` |
+| **Deploy (IPv6)** | `docker-compose-v6.yml` | Same as v4 + IPv6-enabled bridge |
+| **Panel install** | `panel_install.sh` | Picks v4/v6, generates `JWT_SECRET`, downloads compose |
+| **Node install** | `install.sh` | Installs `/etc/flux_agent/flux_agent` + writes `config.json`/`gost.json` + systemd `flux_agent.service` |
+| **Admin API** | `go-backend/` | Go Admin API (SQLite/PostgreSQL) |
+| **Web UI** | `vite-frontend/` | React/Vite dashboard (shadcn bridge + Tailwind v4) |
+| **UI Compatibility** | `vite-frontend/src/shadcn-bridge/heroui/` | HeroUI-compatible API wrappers backed by shadcn/radix |
+| **Theme Tokens** | `vite-frontend/src/styles/tailwind-theme.pcss` | Tailwind v4 `@theme inline` semantic color mapping |
+| **Go Agent** | `go-gost/` | Forwarding agent (forked gost + local x/) |
+| **Go Core** | `go-gost/x/` | Handlers/listeners/dialers + management API |
+| **Repository Layer** | `go-backend/internal/store/repo/` | GORM data access (repository.go 83k LOC) |
+| **Contract Tests** | `go-backend/tests/contract/` | Integration tests for auth, federation, tunnels |
+| **CI Workflows** | `.github/workflows/` | ci-build.yml, docker-build.yml, deploy-docs.yml |
+
+## CODE MAP
+| Symbol | Type | Location | Role |
+|--------|------|----------|------|
+| `flvx` | Project | `.` | Root directory |
+| `main` | Func | `go-backend/cmd/paneld/main.go` | Backend Entry |
+| `App` | Component | `vite-frontend/src/App.tsx` | Frontend Entry |
+| `main` | Func | `go-gost/main.go` | Agent Entry |
+| `Repository` | Struct | `go-backend/internal/store/repo/repository.go` | Data Access Layer |
+| `Handler` | Struct | `go-backend/internal/http/handler/handler.go` | HTTP Handlers |
+| `websocket_reporter` | Func | `go-gost/x/socket/websocket_reporter.go` | Panel Telemetry |
+
+## CONVENTIONS
+- **Skills & MCP**: Always prefer using available skills (via `skill` tool) and MCP tools when applicable. Check for relevant skills before implementing from scratch.
+- **Auth**: `Authorization` header carries the raw JWT token (no `Bearer` prefix) between `vite-frontend/` and `go-backend/`.
+- **Module Fork**: `go-gost/` uses `replace github.com/go-gost/x => ./x` and `go-gost/x/` is also its own Go module.
+- **Encryption**: Agent-to-panel communication uses AES encryption with node `secret` as PSK.
+- **API Envelope**: All REST responses follow `{code, msg, data, ts}` structure (code 0 = success).
+- **Frontend UI Layer**: Import UI primitives from `src/shadcn-bridge/heroui/*` (legacy-compatible facade), not direct `@heroui/*` packages.
+- **Tailwind v4 Semantic Colors**: `src/styles/globals.css` must import `src/styles/tailwind-theme.pcss`; removing it breaks semantic classes like `bg-primary`, `text-foreground`, and `border-input`.
+- **Go Versions**: `go-backend` uses Go 1.24, `go-gost` uses Go 1.23, `go-gost/x` uses Go 1.22.
+
+## ANTI-PATTERNS (THIS PROJECT)
+- **DO NOT EDIT** generated protobuf output: `go-gost/x/internal/util/grpc/proto/*.pb.go`, `go-gost/x/internal/util/grpc/proto/*_grpc.pb.go`.
+- **DO NOT ADD** `Bearer` prefix to Authorization header - expects raw JWT token.
+- **DO NOT MODIFY** `install.sh` or `panel_install.sh` locally - CI overwrites these on release.
+- **DO NOT** let backend handlers call `repo.DB()` directly — add a Repository method instead.
+- **DO NOT ADD** frontend tests - project has no test infrastructure (Vitest/Jest not configured).
+- **DO NOT REINTRODUCE** `@heroui/*` or `@nextui-org/*` dependencies; migration is now shadcn bridge-based.
+- **DO NOT** use `type:jsonb` or `type:serial` in GORM tags (SQLite incompatible).
+- **DO NOT** omit `TableName()` on new models — GORM pluralizes by default.
+
+## COMMANDS
+```bash
+# Panel (Docker)
+docker compose -f docker-compose-v4.yml up -d
+docker compose -f docker-compose-v6.yml up -d
+
+# Release-based install scripts
+./panel_install.sh
+./install.sh
+
+# Local dev (per subproject)
+(cd go-backend && make build)
+(cd vite-frontend && npm run dev)
+(cd go-gost && go run .)
+
+# Testing
+(cd go-backend && go test ./...)
+(cd go-backend && go test ./tests/contract/...)
+```
+
+## UNIQUE STYLES
+- **Flat Monorepo**: Language-prefixed dirs (`go-backend`, `go-gost`, `vite-frontend`) instead of `apps/`/`libs/`.
+- **Asymmetric Go Layout**: `go-backend` follows `cmd/<app>/main.go` while `go-gost` uses `root/main.go`.
+- **Frontend Hybrid Mode**: `App.tsx` detects "H5 mode" (mobile WebView) vs desktop, dictating layout strategy.
+- **Experimental Bundler**: `vite-frontend` uses `rolldown-vite` (Rust-based) instead of standard Vite.
+- **Non-minified Builds**: `vite.config.ts` sets `minify: false`, `treeshake: false` for debugging.
+
+## NOTES
+- LSP servers are not installed in this environment (gopls/typescript-language-server); rely on grep-based navigation.
+- `vite-frontend/vite.config.ts` sets `minify: false` and disables treeshake; expect larger bundles.
+- `vite-frontend` uses `rolldown-vite` (experimental Rust bundler) instead of standard Vite.
+- Install scripts (`install.sh`, `panel_install.sh`) self-delete after execution - common pattern in one-liner installs.
+- CI uses UPX compression (`--best --lzma`) on Go binaries before release.
+- CI dynamically injects `PINNED_VERSION` into install scripts and docker-compose files during releases.
+- `panel_install.sh` auto-detects IPv6 and modifies `/etc/docker/daemon.json` to enable IPv6 bridge.
+- Download proxy `https://gcode.hostcentral.cc/` used for GitHub downloads in China/restricted environments.
+- Backend has contract tests in `go-backend/tests/contract/` - frontend has no test infrastructure.
+- `analysis/3x-ui/` contains a separate git repo for reference/comparison - not part of FLVX core.
+- CI workflows: `ci-build.yml` (build check), `docker-build.yml` (multi-arch images + release), `deploy-docs.yml` (MkDocs).
+- PostgreSQL migration supported via `panel_install.sh` menu option using pgloader.
+- Repository layer is large: `repository.go` (83k LOC), `repository_mutations.go` (43k LOC).
+- Button visual parity relies on `vite-frontend/src/shadcn-bridge/heroui/button.tsx` color mapping + `vite-frontend/src/styles/tailwind-theme.pcss` token export.
+
+## PLAN DOCUMENT RULE
+- Every new implementation plan must have a dedicated Markdown plan document.
+- Store plan documents under `plans/`.
+- Use an incrementing numeric prefix and a short plan-summary name: `NNN-<plan-summary>.md` (for example, `001-auth-refactor.md`, `002-federation-api-cleanup.md`).
+- The numeric prefix must increase by 1 for each new plan.
+- In each plan document, keep a task checklist and mark each task as completed immediately after finishing it.

LICENSE

@@ -1,201 +1,674 @@
-                                 Apache License
-                           Version 2.0, January 2004
-                        http://www.apache.org/licenses/
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
 
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
 
-   1. Definitions.
+                            Preamble
 
-      "License" shall mean the terms and conditions for use, reproduction,
-      and distribution as defined by Sections 1 through 9 of this document.
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
 
-      "Licensor" shall mean the copyright owner or entity authorized by
-      the copyright owner that is granting the License.
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
 
-      "Legal Entity" shall mean the union of the acting entity and all
-      other entities that control, are controlled by, or are under common
-      control with that entity. For the purposes of this definition,
-      "control" means (i) the power, direct or indirect, to cause the
-      direction or management of such entity, whether by contract or
-      otherwise, or (ii) ownership of fifty percent (50%) or more of the
-      outstanding shares, or (iii) beneficial ownership of such entity.
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
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-      "You" (or "Your") shall mean an individual or Legal Entity
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+  Developers that use the GNU GPL protect your rights with two steps:
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-      "Work" shall mean the work of authorship, whether in Source or
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+<https://www.gnu.org/licenses/>.
+
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+<https://www.gnu.org/licenses/why-not-lgpl.html>.

LICENSE-APACHE

@@ -0,0 +1,201 @@
+                                 Apache License
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+
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+   See the License for the specific language governing permissions and
+   limitations under the License.

NOTICE

@@ -0,0 +1,19 @@
+FLVX
+Copyright 2026 Sagit-chu
+
+This product includes software developed at
+flux-panel (https://github.com/bqlpfy/flux-panel)
+Copyright 2024-2026 bqlpfy
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+-------------------------------------------------------------------------
+This project is a derivative work based on flux-panel.
+Modifications and new components (backend, agents, frontend updates) 
+are licensed under the GNU General Public License v3.0 (GPLv3).
+See the LICENSE file for the full GPLv3 text.
+-------------------------------------------------------------------------

README.md

@@ -1,9 +1,8 @@
+# FLVX
 
-# flux-panel转发面板 哆啦A梦转发面板
+> **联系我们**: [Telegram群组](https://t.me/flvxpanel)
 
 
-本项目基于 [go-gost/gost](https://github.com/go-gost/gost) 和 [go-gost/x](https://github.com/go-gost/x) 两个开源库，实现了转发面板。
----
 ## 特性
 
 - 支持按 **隧道账号级别** 管理流量转发数量，可用于用户/隧道配额控制
@@ -12,15 +11,109 @@
 - 可针对 **指定用户的指定隧道进行限速** 设置
 - 支持配置 **单向或双向流量计费方式**，灵活适配不同计费模型
 - 提供灵活的转发策略配置，适用于多种网络场景
+- 面板分享，支持将节点分享给其他人，面板对接面板
+- 支持分组权限管理，隧道分组、用户分组
+- 支持批量功能，可以批量下发配置，启停等
+- 支持隧道修改配置、转发修改隧道
 
 
 ## 部署流程
 ---
 ### Docker Compose部署
+#### 快速部署（安装最新版）
+面板端：
 ```bash
-curl -L https://raw.githubusercontent.com/bqlpfy/flux-panel/refs/heads/main/panel_install.sh -o panel_install.sh && chmod +x panel_install.sh && ./panel_install.sh
+curl -L https://raw.githubusercontent.com/Sagit-chu/flux-panel/main/panel_install.sh -o panel_install.sh && chmod +x panel_install.sh && ./panel_install.sh
+```
+节点端：
+```bash
+curl -L https://raw.githubusercontent.com/Sagit-chu/flux-panel/main/install.sh -o install.sh && chmod +x install.sh && ./install.sh
 ```
 
+#### 安装特定版本
+从 [Releases](https://github.com/Sagit-chu/flux-panel/releases) 页面复制对应版本的安装命令，脚本会自动安装该版本而非最新版。
+
+面板端（以 2.1.9-beta6 为例）：
+```bash
+curl -L https://github.com/Sagit-chu/flux-panel/releases/download/2.1.9-beta6/panel_install.sh -o panel_install.sh && chmod +x panel_install.sh && ./panel_install.sh
+```
+节点端（以 2.1.9-beta6 为例）：
+```bash
+curl -L https://github.com/Sagit-chu/flux-panel/releases/download/2.1.9-beta6/install.sh -o install.sh && chmod +x install.sh && ./install.sh
+```
+
+#### PostgreSQL 部署（Docker Compose）
+
+安装脚本会根据环境自动下载对应的 Compose 配置并保存为 `docker-compose.yml`。默认仍使用 SQLite，切换到 PostgreSQL 只需要配置环境变量。
+
+1) 在 `docker-compose` 同目录创建或修改 `.env`：
+
+```bash
+JWT_SECRET=replace_with_your_secret
+BACKEND_PORT=6365
+FRONTEND_PORT=6366
+
+DB_TYPE=postgres
+DATABASE_URL=postgres://flux_panel:replace_with_strong_password@postgres:5432/flux_panel?sslmode=disable
+
+POSTGRES_DB=flux_panel
+POSTGRES_USER=flux_panel
+POSTGRES_PASSWORD=replace_with_strong_password
+```
+
+> 📌 使用安装脚本部署时，`POSTGRES_PASSWORD` 会自动随机生成并写入 `.env`。
+
+2) 启动服务：
+
+```bash
+docker compose up -d
+```
+
+3) 如果你想继续使用 SQLite，保留 `DB_TYPE=sqlite`（或不设置 `DB_TYPE`）即可。
+
+#### 从 SQLite 迁移到 PostgreSQL
+
+如果你是通过 `panel_install.sh` 安装面板，推荐直接使用脚本菜单一键迁移：
+
+```bash
+./panel_install.sh
+# 选择 4. 迁移到 PostgreSQL
+```
+
+脚本会自动完成 SQLite 备份、PostgreSQL 启动、`pgloader` 导入、`.env` 中 `DB_TYPE`/`DATABASE_URL` 更新，并重启服务。
+
+如果你希望手动迁移，以下示例基于 Docker Volume `sqlite_data`（项目默认配置）与 `pgloader`：
+
+1) 停止服务并备份 SQLite 数据：
+
+```bash
+docker compose down
+docker run --rm -v sqlite_data:/data -v "$(pwd)":/backup alpine sh -c "cp /data/gost.db /backup/gost.db.bak"
+```
+
+2) 仅启动 PostgreSQL：
+
+```bash
+docker compose up -d postgres
+```
+
+3) 使用 `pgloader` 迁移：
+
+```bash
+source .env
+docker run --rm --network gost-network -v sqlite_data:/sqlite dimitri/pgloader:latest pgloader /sqlite/gost.db "postgresql://${POSTGRES_USER}:${POSTGRES_PASSWORD}@postgres:5432/${POSTGRES_DB}"
+```
+
+4) 切换后端到 PostgreSQL 并启动：
+
+```bash
+source .env
+export DB_TYPE=postgres
+export DATABASE_URL="postgresql://${POSTGRES_USER}:${POSTGRES_PASSWORD}@postgres:5432/${POSTGRES_DB}?sslmode=disable"
+docker compose up -d
+```
+
+5) 迁移完成后，登录面板检查用户、隧道、转发、节点数据是否正确。
 
 #### 默认管理员账号
 
@@ -29,6 +122,38 @@ curl -L https://raw.githubusercontent.com/bqlpfy/flux-panel/refs/heads/main/pane
 
 > ⚠️ 首次登录后请立即修改默认密码！
 
+---
+## Original Project
+- **Name**: flux-panel
+- **Source**: https://github.com/bqlpfy/flux-panel
+- **License**: Apache License 2.0
+
+## Modifications
+This fork (FLVX) is no longer a light patch on top of the upstream project. It has been deeply reworked, with both backend and frontend rebuilt around a Go-based architecture.
+
+### 1. Backend (Rewritten)
+- **Removed**: The original `springboot-backend/` (Java/Spring Boot) implementation.
+- **Added**: A fully rewritten `go-backend/` service (Go), including updated data and API handling for panel management.
+
+### 2. Frontend (Reworked)
+- **Reworked**: `vite-frontend/` has been substantially rebuilt to match the new backend contract and current UI layer architecture.
+- **Updated**: Dashboard pages/components and interaction flows for the current React/Vite stack.
+
+### 3. Forwarding Stack (Modified)
+- **Modified**: `go-gost/` forwarding agent wrapper.
+- **Modified**: `go-gost/x/` local fork of `github.com/go-gost/x`.
+
+### 4. Mobile Clients (Removed)
+- **Removed**: `android-app/` source code.
+- **Removed**: `ios-app/` source code.
+
+### 5. Deployment & Project Infrastructure
+- **Updated**: Docker deployment templates and installer output flow (IPv4/IPv6 compose variants).
+- **Updated**: Release installation scripts (`install.sh`, `panel_install.sh`) and supporting automation.
+- **Added/Updated**: Project-level engineering documentation (for example `AGENTS.md`).
+
+---
+
 
 ## 免责声明
 
@@ -52,17 +177,14 @@ curl -L https://raw.githubusercontent.com/bqlpfy/flux-panel/refs/heads/main/pane
 作者对因使用本项目所造成的任何直接或间接损失概不负责，亦不提供任何形式的担保、承诺或技术支持。  
 
 
-请务必在合法、合规、安全的前提下使用本项目。  
+请务必在合法、合规、安全的前提下使用本项目。
 
 ---
-## ⭐ 喝杯咖啡！
+## ⭐ 喝杯咖啡！（USDT）
 
 | 网络       | 地址                                                                 |
 |------------|----------------------------------------------------------------------|
-| BNB(BEP20) | `0x755492c03728851bbf855daa28a1e089f9aca4d1`                          |
-| TRC20      | `TYh2L3xxXpuJhAcBWnt3yiiADiCSJLgUm7`                                  |
-| Aptos      | `0xf2f9fb14749457748506a8281628d556e8540d1eb586d202cd8b02b99d369ef8`  |
-
-[![Star History Chart](https://api.star-history.com/svg?repos=bqlpfy/flux-panel&type=Date)](https://www.star-history.com/#bqlpfy/flux-panel&Date)
-
-
+| BNB(BEP20) | `0xa608708fdc6279a2433fd4b82f0b72b8cbe97ed5`                          |
+| TRC20      | `TM8VYdU3s3gSX5PC8swjAJrAzZFCHKqG2k`                                  |
+| Aptos      | `0x49427bfcba1006a346447430689b2307ac156316bb34850d1d3029ff9d118da5`  |
+| polygon    |  `0xa608708fdc6279a2433fd4b82f0b72b8cbe97ed5`    |

doc/ai-skill.md

@@ -0,0 +1,220 @@
+# AI Skill 使用指南
+
+让大模型直接操作 FLVX 面板的技能包。支持 OpenCode、OpenClaw、Claude Code 等工具。
+
+## 安装
+
+### 方式 1: npm (推荐)
+
+```bash
+npm install -g @flvx/skill-api
+```
+
+postinstall 脚本会自动链接到 `~/.agents/skills/flvx-api/`。
+
+### 方式 2: 手动链接
+
+```bash
+# 从 FLVX 源码
+cd /path/to/flvx
+mkdir -p ~/.agents/skills
+ln -sf $(pwd)/skills/flvx-api ~/.agents/skills/
+
+# 或从 GitHub
+git clone https://github.com/Sagit-chu/flvx.git
+cd flvx
+ln -sf $(pwd)/skills/flvx-api ~/.agents/skills/
+```
+
+## 配置
+
+设置环境变量：
+
+```bash
+export FLVX_BASE_URL="https://your-panel.example.com"
+export FLVX_USERNAME="admin"
+export FLVX_PASSWORD="your-password"
+```
+
+或使用凭证文件：
+
+```bash
+mkdir -p ~/.flvx
+cat > ~/.flvx/.env << 'EOF'
+export FLVX_BASE_URL="https://panel.example.com"
+export FLVX_USERNAME="admin"
+export FLVX_PASSWORD="your-password"
+EOF
+chmod 600 ~/.flvx/.env
+source ~/.flvx/.env
+```
+
+---
+
+## 工具接入方法
+
+### OpenCode
+
+OpenCode 是命令行 AI 编程助手，支持通过 skills 扩展能力。
+
+**安装 skill:**
+```bash
+npm install -g @flvx/skill-api
+```
+
+**使用:**
+```bash
+export FLVX_BASE_URL="https://panel.example.com"
+export FLVX_USERNAME="admin"
+export FLVX_PASSWORD="your-password"
+
+opencode
+```
+
+**示例对话:**
+```
+你: 查看我的转发列表
+你: 创建一个转发到 192.168.1.100:80 使用隧道 1
+你: 检查节点状态
+你: 查看流量使用情况
+```
+
+---
+
+### OpenClaw
+
+OpenClaw 同样支持 skills 机制。
+
+**安装 skill:**
+```bash
+npm install -g @flvx/skill-api
+
+# 或手动链接
+mkdir -p ~/.openclaw/skills
+ln -sf /path/to/flvx/skills/flvx-api ~/.openclaw/skills/flvx-api
+```
+
+**使用:**
+```bash
+openclaw
+
+>>> 查看所有节点状态
+>>> 给用户 alice 分配 50GB 流量
+>>> 导出系统备份
+```
+
+---
+
+### Claude Code
+
+Claude Code 是 Anthropic 官方的命令行工具，支持通过 CLAUDE.md 扩展。
+
+#### 方式 1: 项目级 CLAUDE.md
+
+在项目根目录创建 `CLAUDE.md`：
+
+```markdown
+# FLVX API Skill
+
+你可以通过 REST API 操作 FLVX 面板。
+
+## 环境变量
+- FLVX_BASE_URL: 面板地址
+- FLVX_USERNAME: 用户名
+- FLVX_PASSWORD: 密码
+
+## 认证规则
+- Authorization 头使用原始 JWT token，不加 "Bearer " 前缀
+- 所有 API 使用 POST 方法
+
+## 常用 API
+
+### 登录获取 token
+POST /api/v1/user/login
+{"username": "...", "password": "..."}
+
+### 查看转发列表
+POST /api/v1/forward/list
+Authorization: <token>
+{}
+
+### 创建转发
+POST /api/v1/forward/create
+{"name": "xxx", "tunnelId": 1, "remoteAddr": "1.2.3.4:80"}
+
+### 查看节点
+POST /api/v1/node/list
+{}
+```
+
+**使用:**
+```bash
+cd /path/to/your/project
+claude
+```
+
+#### 方式 2: 全局 CLAUDE.md
+
+```bash
+mkdir -p ~/.claude
+cat > ~/.claude/CLAUDE.md << 'EOF'
+# FLVX Panel Operations
+
+使用 FLVX REST API 操作流量转发面板。
+
+环境变量: FLVX_BASE_URL, FLVX_USERNAME, FLVX_PASSWORD
+调用方式: curl -X POST "$FLVX_BASE_URL/api/v1/..." -H "Authorization: $TOKEN"
+注意: Authorization 不要加 Bearer 前缀
+EOF
+```
+
+#### 方式 3: 复制 SKILL.md
+
+```bash
+cat ~/.agents/skills/flvx-api/SKILL.md >> ~/.claude/CLAUDE.md
+```
+
+**示例对话:**
+```
+>>> 帮我查看 FLVX 面板上有哪些节点
+>>> 创建一个名为 test 的转发，目标地址 10.0.0.1:80
+>>> 查看我的流量使用情况
+```
+
+---
+
+## API 覆盖
+
+| 模块 | 操作 |
+|------|------|
+| 认证 | 登录、Token 管理 |
+| 用户 | 增删改查、流量重置、密码 |
+| 节点 | 增删改查、安装、升级、状态 |
+| 隧道 | 增删改查、用户分配 |
+| 转发 | 增删改查、暂停/恢复、诊断 |
+| 分组 | 用户/隧道分组、权限 |
+| 限速 | 增删改查 |
+| 联邦 | 节点共享、远程节点 |
+| 备份 | 导出/导入 |
+
+## 安全提示
+
+- ⚠️ 环境变量在进程列表中可见
+- 使用 `~/.flvx/.env` 文件并设置 `chmod 600`
+- 添加 `export HISTIGNORE="*FLVX_PASSWORD*"` 防止密码进入历史记录
+- Token 仅在会话内存中缓存，不写入磁盘
+
+## 发布
+
+维护者可通过以下方式发布新版本：
+
+```bash
+# 方式 1: 推送 tag
+git tag skill-v2.1.6
+git push --tags
+
+# 方式 2: GitHub Actions 手动触发
+# 在 Actions 页面运行 publish-skill workflow
+```
+
+需要在 GitHub 仓库设置 `NPM_TOKEN` secret。

doc/faq.md

@@ -0,0 +1,40 @@
+# 常见问题 (FAQ)
+
+### Q1: 安装脚本提示 "Docker command not found"？
+**A**: 请确保您的系统已安装 Docker 和 Docker Compose。
+- Ubuntu/Debian 安装 Docker: `curl -fsSL https://get.docker.com | bash`
+
+### Q2: 面板无法访问 (Connection Refused)？
+**A**:
+1. 检查防火墙是否放行了前端端口（默认 `6366`）。
+2. 检查容器是否正常运行: `docker ps`。
+3. 查看容器日志: `docker logs flux-panel-backend` 或 `docker logs vite-frontend`。
+
+### Q3: 节点显示离线？
+**A**:
+1. 检查节点服务器与面板服务器之间的网络连通性。
+2. 确认在节点端安装时输入的 **面板地址** 和 **密钥** 是否正确。
+3. 检查节点端服务状态: `systemctl status flux_agent`。
+4. 查看节点端日志: `journalctl -u flux_agent -f`。
+
+### Q4: 只有 TCP 能通，UDP 不通？
+**A**: 请检查服务器防火墙和安全组（AWS/阿里云/腾讯云等）是否同时放行了对应端口的 **TCP 和 UDP** 协议。
+
+### Q5: IPv6 无法使用？
+**A**: 面板安装脚本会自动尝试配置 Docker 的 IPv6。如果失败，请手动检查 `/etc/docker/daemon.json` 配置，确保 `ipv6: true` 且分配了正确的 `fixed-cidr-v6` 子网。
+
+### Q6: 如何切换到 PostgreSQL？
+**A**: 在 `.env` 文件中设置 `DB_TYPE=postgres`，并让 `DATABASE_URL` 与 `POSTGRES_*` 保持一致，然后执行 `docker compose up -d` 重启服务即可。使用安装脚本部署时，`POSTGRES_PASSWORD` 会自动随机生成并写入 `.env`。详见 [PostgreSQL 数据库指南](./postgresql.md)。
+
+### Q7: 从 SQLite 迁移到 PostgreSQL 后数据丢失？
+**A**:
+1. 确认迁移前已备份 SQLite 文件（`gost.db.bak`）。
+2. 确认 `pgloader` 命令执行成功，检查其输出是否有报错。
+3. 确认 `.env` 中 `DATABASE_URL` 的密码与 `POSTGRES_PASSWORD` 一致。
+4. 详细迁移步骤参考 [PostgreSQL 数据库指南 - 从 SQLite 迁移](./postgresql.md)。
+
+### Q8: PostgreSQL 容器启动失败？
+**A**:
+1. 检查 `POSTGRES_PASSWORD` 是否已设置（不能为空）。
+2. 查看容器日志：`docker logs flux-panel-postgres`。
+3. 如果是首次启动后修改了密码，需要删除旧的数据卷重新初始化：`docker volume rm postgres_data`。

doc/index.md

@@ -0,0 +1,39 @@
+# FLVX 官方文档
+
+**FLVX** 是一个基于 [go-gost/gost](https://github.com/go-gost/gost) 和 [go-gost/x](https://github.com/go-gost/x) 开发的高性能流量转发管理系统。
+
+> 📞 **联系我们**: [Telegram群组](https://t.me/flvxpanel)
+
+## 核心特性
+
+- **多协议支持**: 完美支持 TCP 和 UDP 协议转发。
+- **灵活转发**: 支持 **端口转发** 与 **隧道转发** 两种模式。
+- **流量控制**: 支持按 **隧道账号级别** 管理流量转发数量，用于用户/隧道配额控制。
+- **限速管理**: 可针对 **指定用户的指定隧道进行限速** 设置。
+- **计费策略**: 支持配置 **单向或双向流量计费方式**，灵活适配不同计费模型。
+- **策略配置**: 提供灵活的转发策略配置，适用于多种网络场景。
+
+## 快速开始
+
+- [安装部署](./install.md)
+- [使用指南](./usage.md)
+- [PostgreSQL 数据库指南](./postgresql.md)
+- [AI Skill 接入](./ai-skill.md) - 让大模型直接操作面板
+- [常见问题](./faq.md)
+
+## 免责声明
+
+本项目仅供个人学习与研究使用，基于开源项目进行二次开发。  
+使用本项目所带来的任何风险均由使用者自行承担。本项目为开源的流量转发工具，仅限合法、合规用途。  
+**禁止将本项目用于任何违法或未经授权的行为，包括但不限于网络攻击、数据窃取、非法访问等。**
+
+## 捐赠支持
+
+如果您觉得本项目对您有帮助，欢迎请作者喝杯咖啡！
+
+| 网络       | 地址                                                                 |
+|------------|----------------------------------------------------------------------|
+| BNB(BEP20) | `0xa608708fdc6279a2433fd4b82f0b72b8cbe97ed5`                          |
+| TRC20      | `TM8VYdU3s3gSX5PC8swjAJrAzZFCHKqG2k`                                  |
+| Aptos      | `0x49427bfcba1006a346447430689b2307ac156316bb34850d1d3029ff9d118da5`  |
+| Polygon    | `0xa608708fdc6279a2433fd4b82f0b72b8cbe97ed5`                          |

doc/install.md

@@ -0,0 +1,135 @@
+# 安装部署指南
+
+本文档介绍如何部署 FLVX 面板端及节点端。
+
+## 一、面板端部署
+
+面板端负责管理用户、节点和转发规则。
+
+### 1. 环境要求
+- 操作系统：Linux (推荐 Debian 10+ / Ubuntu 20.04+)
+- 必须安装 Docker 和 Docker Compose
+
+### 2. 一键安装脚本
+
+使用以下命令即可快速安装面板：
+
+```bash
+curl -L https://raw.githubusercontent.com/Sagit-chu/flux-panel/main/panel_install.sh -o panel_install.sh && chmod +x panel_install.sh && ./panel_install.sh
+```
+
+**安装过程中会提示输入以下信息：**
+- **前端端口**: 默认为 `6366`
+- **后端端口**: 默认为 `6365`
+
+脚本会自动检测系统是否支持 IPv6，并自动配置 Docker 的 IPv6 支持。
+
+### 3. 访问面板
+
+安装完成后，访问：
+`http://<服务器IP>:<前端端口>` (默认: `http://<服务器IP>:6366`)
+
+**默认管理员账号：**
+- 用户名: `admin_user`
+- 密码: `admin_user`
+
+> ⚠️ **注意**: 首次登录后，请务必在“个人中心”或“设置”中修改默认密码！
+
+### 4. 维护命令
+
+再次运行 `./panel_install.sh` 脚本可以看到管理菜单：
+1. 安装面板
+2. 更新面板
+3. 卸载面板
+4. 迁移到 PostgreSQL
+5. 退出
+
+---
+
+## 二、节点端部署
+
+节点端运行在实际进行流量转发的服务器上，需要连接到面板端进行管理。
+
+### 1. 获取接入密钥
+1. 登录面板端。
+2. 进入 **节点管理 (Node)** 页面。
+3. 点击 **添加节点**。
+4. 获取该节点的 **接入密钥 (Secret)**。
+
+### 2. 一键安装脚本
+
+在节点服务器上运行：
+
+```bash
+curl -L https://raw.githubusercontent.com/Sagit-chu/flux-panel/main/install.sh -o install.sh && chmod +x install.sh && ./install.sh
+```
+
+**安装过程中会提示输入：**
+- **服务器地址**: 面板端的通信地址（通常是 `http://<面板IP>:<后端端口>`，例如 `http://1.2.3.4:6365`）。
+- **密钥**: 刚才在面板中获取的节点密钥。
+
+或者直接使用带参数的命令（适用于自动化部署）：
+
+```bash
+# 替换 <面板地址> 和 <密钥>
+./install.sh -a "http://1.2.3.4:6365" -s "your_node_secret"
+```
+
+### 3. 验证安装
+安装完成后，服务会自动启动。
+- 查看状态: `systemctl status flux_agent`
+- 回到面板 **节点管理** 页面，该节点状态应显示为 **在线**。
+
+---
+
+## 三、Caddy 反向代理（可选）
+
+如果需要通过域名访问面板并自动获取 HTTPS 证书，可以使用 Caddy 作为反向代理。
+
+### 1. 安装 Caddy
+
+```bash
+# Debian / Ubuntu
+sudo apt install -y debian-keyring debian-archive-keyring apt-transport-https curl
+curl -1sLf 'https://dl.cloudflare.com/content/v1/e2qwFJ2fRP2b2q/stable/gpg.key' | sudo gpg --dearmor -o /usr/share/keyrings/caddy-stable-archive-keyring.gpg
+curl -1sLf 'https://dl.cloudflare.com/content/v1/e2qwFJ2fRP2b2q/stable/debian.deb.txt' | sudo tee /etc/apt/sources.list.d/caddy-stable.list
+sudo apt update
+sudo apt install caddy
+```
+
+其他系统请参考 [Caddy 官方安装文档](https://caddyserver.com/docs/install)。
+
+### 2. 配置 Caddyfile
+
+编辑 Caddy 配置文件：
+
+```bash
+sudo nano /etc/caddy/Caddyfile
+```
+
+#### 面板域名配置
+
+将 `panel.example.com` 替换为你自己的域名：
+
+```caddyfile
+panel.example.com {
+    reverse_proxy localhost:6366
+}
+```
+
+Caddy 会自动为域名申请和续期 HTTPS 证书，无需额外配置。
+
+### 3. 重启 Caddy
+
+```bash
+sudo systemctl restart caddy
+```
+
+### 4. 注意事项
+
+- 确保域名已正确解析到服务器 IP。
+- 确保服务器防火墙放行了 **80** 和 **443** 端口（Caddy 自动申请证书需要）。
+- 使用 Caddy 反向代理后，可以在 `.env` 中将前端端口改为仅监听本地，避免直接暴露：
+  ```
+  FRONTEND_PORT=127.0.0.1:6366
+  ```

doc/postgresql.md

@@ -0,0 +1,274 @@
+# PostgreSQL 数据库指南
+
+FLVX 默认使用 SQLite 作为数据库，同时也内置了对 PostgreSQL 的完整支持。本文档介绍如何使用 PostgreSQL 部署面板、从 SQLite 迁移以及日常维护。
+
+## 一、SQLite 与 PostgreSQL 对比
+
+| 特性 | SQLite | PostgreSQL |
+|------|--------|------------|
+| **部署复杂度** | 零配置，开箱即用 | 需要额外的数据库服务 |
+| **并发性能** | 适合小规模单机使用 | 支持高并发读写 |
+| **数据规模** | 适合中小规模数据 | 适合大规模数据 |
+| **备份与恢复** | 直接复制文件 | 支持逻辑备份与物理备份 |
+| **高可用** | 不支持 | 支持主从复制、流复制 |
+
+**建议**：如果你只是个人使用或小团队使用，SQLite 完全够用。如果节点多，推荐使用 PostgreSQL。
+
+---
+
+## 二、环境变量说明
+
+以下环境变量用于配置数据库连接，在 `.env` 文件或 Docker Compose `environment` 中设置。
+
+### 后端服务 (backend) 使用
+
+| 变量名 | 说明 | 默认值 | 示例 |
+|--------|------|--------|------|
+| `DB_TYPE` | 数据库类型，`sqlite` 或 `postgres` | `sqlite` | `postgres` |
+| `DATABASE_URL` | PostgreSQL 连接字符串（仅 `DB_TYPE=postgres` 时必填） | 空 | `postgres://flux_panel:密码@postgres:5432/flux_panel?sslmode=disable` |
+| `DB_PATH` | SQLite 数据库文件路径（仅 `DB_TYPE=sqlite` 时使用） | `/app/data/gost.db` | `/app/data/gost.db` |
+
+### PostgreSQL 容器使用
+
+| 变量名 | 说明 | 默认值 |
+|--------|------|--------|
+| `POSTGRES_DB` | 数据库名称 | `flux_panel` |
+| `POSTGRES_USER` | 数据库用户名 | `flux_panel` |
+| `POSTGRES_PASSWORD` | 数据库密码 | `flux_panel_change_me` |
+
+> ⚠️ **安全提示**：生产环境中请务必修改 `POSTGRES_PASSWORD` 为强密码，不要使用默认值！
+
+---
+
+## 三、全新部署（Docker Compose + PostgreSQL）
+
+安装脚本会根据环境自动下载对应的 Compose 配置并保存为 `docker-compose.yml`。默认使用 SQLite，只需配置环境变量即可切换到 PostgreSQL。
+
+### 1. 创建 `.env` 文件
+
+在 `docker-compose` 同目录创建 `.env` 文件：
+
+```bash
+# 基础配置
+JWT_SECRET=替换为你的密钥
+BACKEND_PORT=6365
+FRONTEND_PORT=6366
+
+# PostgreSQL 配置
+DB_TYPE=postgres
+DATABASE_URL=postgres://flux_panel:替换为强密码@postgres:5432/flux_panel?sslmode=disable
+
+POSTGRES_DB=flux_panel
+POSTGRES_USER=flux_panel
+POSTGRES_PASSWORD=替换为强密码
+```
+
+> ⚠️ `DATABASE_URL` 中的密码必须与 `POSTGRES_PASSWORD` 保持一致。
+
+### 2. 启动服务
+
+```bash
+docker compose up -d
+```
+
+### 3. 验证
+
+```bash
+# 检查所有容器是否正常运行
+docker ps
+
+# 查看后端日志，确认连接 PostgreSQL 成功
+docker logs flux-panel-backend
+
+# 查看 PostgreSQL 容器状态
+docker logs flux-panel-postgres
+```
+
+---
+
+## 四、从 SQLite 迁移到 PostgreSQL
+
+如果你已经在使用 SQLite 并且希望迁移到 PostgreSQL，请按照以下步骤操作。
+
+### 快速方式：脚本菜单一键迁移（推荐）
+
+如果你是通过安装脚本部署面板，可直接执行：
+
+```bash
+./panel_install.sh
+# 选择 4. 迁移到 PostgreSQL
+```
+
+脚本会自动完成以下操作：
+- 备份 SQLite 数据到当前目录（`gost.db.bak`）
+- 启动并等待 PostgreSQL 健康检查通过
+- 使用 `pgloader` 导入 SQLite 数据
+- 自动写入 `.env` 的 `DB_TYPE=postgres` 与 `DATABASE_URL`
+- 重启服务并等待后端健康检查
+
+### 手动方式：按步骤迁移
+
+### 1. 备份 SQLite 数据
+
+```bash
+# 停止所有服务
+docker compose down
+
+# 备份 SQLite 数据文件到当前目录
+docker run --rm -v sqlite_data:/data -v "$(pwd)":/backup alpine sh -c "cp /data/gost.db /backup/gost.db.bak"
+```
+
+### 2. 配置 PostgreSQL 环境变量
+
+在 `.env` 文件中添加 PostgreSQL 配置（参考上方"环境变量说明"）。
+
+### 3. 仅启动 PostgreSQL
+
+```bash
+docker compose up -d postgres
+```
+
+等待 PostgreSQL 完全就绪：
+
+```bash
+# 检查 PostgreSQL 健康状态
+docker inspect --format='{{.State.Health.Status}}' flux-panel-postgres
+# 输出 "healthy" 表示就绪
+```
+
+### 4. 使用 pgloader 迁移数据
+
+```bash
+source .env
+docker run --rm \
+  --network gost-network \
+  -v sqlite_data:/sqlite \
+  dimitri/pgloader:latest \
+  pgloader /sqlite/gost.db "postgresql://${POSTGRES_USER}:${POSTGRES_PASSWORD}@postgres:5432/${POSTGRES_DB}"
+```
+
+> 📌 建议直接从 `.env` 读取 `POSTGRES_USER`、`POSTGRES_PASSWORD`、`POSTGRES_DB`，避免手填密码导致认证失败。
+
+### 5. 启动全部服务
+
+```bash
+source .env
+export DB_TYPE=postgres
+export DATABASE_URL="postgresql://${POSTGRES_USER}:${POSTGRES_PASSWORD}@postgres:5432/${POSTGRES_DB}?sslmode=disable"
+docker compose up -d
+```
+
+### 6. 验证迁移
+
+登录面板后，检查以下数据是否完整：
+- 用户列表和权限
+- 节点信息和状态
+- 隧道配置
+- 转发规则
+- 流量统计数据
+
+---
+
+## 五、独立 PostgreSQL（非 Docker）
+
+如果你不想使用 Docker Compose 中自带的 PostgreSQL 容器，也可以连接外部的 PostgreSQL 实例。
+
+### 1. 准备 PostgreSQL
+
+在目标 PostgreSQL 服务器上创建数据库和用户：
+
+```sql
+CREATE USER flux_panel WITH PASSWORD '你的强密码';
+CREATE DATABASE flux_panel OWNER flux_panel;
+```
+
+### 2. 配置连接
+
+修改 `.env` 文件，将 `DATABASE_URL` 指向外部 PostgreSQL：
+
+```bash
+DB_TYPE=postgres
+DATABASE_URL=postgres://flux_panel:你的强密码@数据库地址:5432/flux_panel?sslmode=disable
+```
+
+> 📌 如果 PostgreSQL 在远程服务器且启用了 SSL，请将 `sslmode=disable` 改为 `sslmode=require` 或 `sslmode=verify-full`。
+
+### 3. 停用内置 PostgreSQL 容器（可选）
+
+如果使用外部 PostgreSQL，可以在启动时不启动内置的 postgres 服务：
+
+```bash
+docker compose up -d backend frontend
+```
+
+---
+
+## 六、数据备份与恢复
+
+### 逻辑备份（pg_dump）
+
+```bash
+# 备份（在 Docker 环境下）
+docker exec flux-panel-postgres pg_dump -U flux_panel flux_panel > backup_$(date +%Y%m%d_%H%M%S).sql
+
+# 恢复
+docker exec -i flux-panel-postgres psql -U flux_panel flux_panel < backup_20260101_120000.sql
+```
+
+### 定时备份（cron）
+
+创建备份脚本 `/opt/flvx/backup.sh`：
+
+```bash
+#!/bin/bash
+BACKUP_DIR="/opt/flvx/backups"
+mkdir -p "$BACKUP_DIR"
+docker exec flux-panel-postgres pg_dump -U flux_panel flux_panel | gzip > "$BACKUP_DIR/flvx_$(date +%Y%m%d_%H%M%S).sql.gz"
+# 清理 30 天前的备份
+find "$BACKUP_DIR" -name "flvx_*.sql.gz" -mtime +30 -delete
+```
+
+添加 cron 任务（每天凌晨 3 点执行）：
+
+```bash
+chmod +x /opt/flvx/backup.sh
+echo "0 3 * * * /opt/flvx/backup.sh" | crontab -
+```
+
+---
+
+## 七、常见问题
+
+### Q: 切换到 PostgreSQL 后启动失败，提示连接被拒绝？
+
+**A**: 
+1. 确认 PostgreSQL 容器已启动并处于 `healthy` 状态：`docker ps`。
+2. 确认 `DATABASE_URL` 中的主机名、端口、用户名、密码正确。
+3. 在 Docker Compose 环境下，主机名应为 `postgres`（服务名），而非 `localhost`。
+
+### Q: pgloader 迁移时报错？
+
+**A**: 
+1. 确认 PostgreSQL 容器已完全就绪（状态为 `healthy`）。
+2. 确认 `--network gost-network` 参数正确，使 pgloader 容器与 PostgreSQL 在同一网络中。
+3. 如果数据库已有表结构，pgloader 可能会报冲突。可以先清空目标数据库后重试。
+
+### Q: 如何查看当前使用的数据库类型？
+
+**A**: 查看后端容器的 `DB_TYPE` 环境变量：
+
+```bash
+docker exec flux-panel-backend printenv DB_TYPE
+```
+
+### Q: 可以同时使用 SQLite 和 PostgreSQL 吗？
+
+**A**: 不可以。`DB_TYPE` 只能设置为 `sqlite` 或 `postgres` 之一。后端启动时根据此配置连接对应的数据库。
+
+### Q: PostgreSQL 数据存储在哪里？
+
+**A**: 在 Docker Compose 部署中，PostgreSQL 数据存储在名为 `postgres_data` 的 Docker Volume 中。可以通过以下命令查看：
+
+```bash
+docker volume inspect postgres_data
+```

doc/usage.md

@@ -0,0 +1,35 @@
+# 使用指南
+
+## 1. 仪表盘 (Dashboard)
+登录系统后首先看到的是仪表盘，这里展示了系统的整体运行状态，包括：
+- 在线节点数量
+- 用户总数
+- 流量统计信息
+
+## 2. 节点管理 (Node)
+节点是实际承载流量转发的服务器。
+- **添加节点**: 点击“添加”，获取密钥用于节点端安装。
+- **管理**: 可以查看节点在线状态、版本信息，以及对节点进行编辑或删除。
+
+## 3. 用户管理 (User)
+管理员可以创建和管理普通用户。
+- **创建用户**: 设置用户名、密码、流量配额等。
+- **用户组**: 可以将用户分配到不同的组 (Group)，便于统一管理权限或策略。
+
+## 4. 转发管理 (Forward)
+这是核心功能区，用于设置端口转发规则。
+- **端口转发**: 将节点服务器的某个端口流量转发到目标地址。
+    - **协议**: 支持 TCP / UDP。
+    - **入口**: 选择入口节点和监听端口。
+    - **出口**: 设置目标 IP 和端口。
+- **隧道转发**: 用于更复杂的网络穿透场景（具体配置视业务需求而定）。
+
+## 5. 限制与策略 (Limit)
+- **限速**: 可以对指定用户或指定隧道进行带宽限制，防止资源滥用。
+- **计费模式**: 支持配置流量计算方式（单向或双向），适合运营场景。
+
+## 6. 系统配置 (Config)
+在此页面进行系统的全局设置。
+
+## 7. 个人设置 (Profile)
+- **修改密码**: 为了安全，建议定期修改管理员密码。

docker-compose-v4.yml

@@ -1,62 +1,68 @@
 services:
-  mysql:
-    image: mysql:5.7
-    container_name: gost-mysql
-    restart: unless-stopped
-    environment:
-      MYSQL_ROOT_PASSWORD: ${DB_PASSWORD}
-      MYSQL_DATABASE: ${DB_NAME}
-      MYSQL_USER: ${DB_USER}
-      MYSQL_PASSWORD: ${DB_PASSWORD}
-      TZ: Asia/Shanghai
-    volumes:
-      - mysql_data:/var/lib/mysql
-      - ./gost.sql:/docker-entrypoint-initdb.d/init.sql:ro
-    command: >
-      --default-authentication-plugin=mysql_native_password
-      --character-set-server=utf8mb4
-      --collation-server=utf8mb4_unicode_ci
-      --max_connections=1000
-      --innodb_buffer_pool_size=256M
-    networks:
-      - gost-network
-    healthcheck:
-      test: ["CMD", "mysqladmin", "ping", "-h", "localhost"]
-      timeout: 10s
-      retries: 10
-
   backend:
-    image: bqlpfy/springboot-backend:latest
-    container_name: springboot-backend
+    image: ghcr.io/sagit-chu/flux-panel-backend:${FLUX_VERSION:-latest}
+    container_name: flux-panel-backend
     restart: unless-stopped
+    logging:
+      driver: json-file
+      options:
+        max-size: "20m"
+        max-file: "3"
     environment:
-      DB_HOST: mysql
-      DB_NAME: ${DB_NAME}
-      DB_USER: ${DB_USER}
-      DB_PASSWORD: ${DB_PASSWORD}
+      DB_TYPE: ${DB_TYPE:-sqlite}
+      DB_PATH: /app/data/gost.db
+      DATABASE_URL: ${DATABASE_URL:-}
       JWT_SECRET: ${JWT_SECRET}
-      LOG_DIR: /app/logs
-      JAVA_OPTS: "-Xms256m -Xmx512m -Dfile.encoding=UTF-8 -Duser.timezone=Asia/Shanghai"
+      SERVER_ADDR: :6365
+      TZ: Asia/Shanghai
     ports:
       - "${BACKEND_PORT}:6365"
     volumes:
-      - backend_logs:/app/logs
-    depends_on:
-      mysql:
-        condition: service_healthy
+      - sqlite_data:/app/data
     networks:
       - gost-network
+    stop_grace_period: 30s
+    stop_signal: SIGTERM
     healthcheck:
       test: ["CMD", "sh", "-c", "wget --no-verbose --tries=1 --spider http://localhost:6365/flow/test || exit 1"]
       interval: 30s
       timeout: 10s
       retries: 5
-      start_period: 90s
+      start_period: 30s
+
+  postgres:
+    image: postgres:16-alpine
+    container_name: flux-panel-postgres
+    restart: unless-stopped
+    logging:
+      driver: json-file
+      options:
+        max-size: "20m"
+    environment:
+      POSTGRES_DB: ${POSTGRES_DB:-flux_panel}
+      POSTGRES_USER: ${POSTGRES_USER:-flux_panel}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-flux_panel_change_me}
+      TZ: Asia/Shanghai
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    networks:
+      - gost-network
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER:-flux_panel} -d ${POSTGRES_DB:-flux_panel}"]
+      interval: 10s
+      timeout: 5s
+      retries: 10
+      start_period: 20s
 
   frontend:
-    image: bqlpfy/vite-frontend:latest
+    image: ghcr.io/sagit-chu/vite-frontend:${FLUX_VERSION:-latest}
     container_name: vite-frontend
     restart: unless-stopped
+    logging:
+      driver: json-file
+      options:
+        max-size: "20m"
+        max-file: "3"
     ports:
       - "${FRONTEND_PORT}:80"
     depends_on:
@@ -67,11 +73,11 @@ services:
 
 
 volumes:
-  mysql_data:
-    name: mysql_data
+  sqlite_data:
+    name: sqlite_data
     driver: local
-  backend_logs:
-    name: backend_logs
+  postgres_data:
+    name: postgres_data
     driver: local
 
 
@@ -81,4 +87,4 @@ networks:
     driver: bridge
     ipam:
       config:
-        - subnet: 172.20.0.0/16 
+        - subnet: 172.80.0.0/16 

docker-compose-v6.yml

@@ -1,62 +1,68 @@
 services:
-  mysql:
-    image: mysql:5.7
-    container_name: gost-mysql
-    restart: unless-stopped
-    environment:
-      MYSQL_ROOT_PASSWORD: ${DB_PASSWORD}
-      MYSQL_DATABASE: ${DB_NAME}
-      MYSQL_USER: ${DB_USER}
-      MYSQL_PASSWORD: ${DB_PASSWORD}
-      TZ: Asia/Shanghai
-    volumes:
-      - mysql_data:/var/lib/mysql
-      - ./gost.sql:/docker-entrypoint-initdb.d/init.sql:ro
-    command: >
-      --default-authentication-plugin=mysql_native_password
-      --character-set-server=utf8mb4
-      --collation-server=utf8mb4_unicode_ci
-      --max_connections=1000
-      --innodb_buffer_pool_size=256M
-    networks:
-      - gost-network
-    healthcheck:
-      test: ["CMD", "mysqladmin", "ping", "-h", "localhost"]
-      timeout: 10s
-      retries: 10
-
   backend:
-    image: bqlpfy/springboot-backend:latest
-    container_name: springboot-backend
+    image: ghcr.io/sagit-chu/flux-panel-backend:${FLUX_VERSION:-latest}
+    container_name: flux-panel-backend
     restart: unless-stopped
+    logging:
+      driver: json-file
+      options:
+        max-size: "20m"
+        max-file: "3"
     environment:
-      DB_HOST: mysql
-      DB_NAME: ${DB_NAME}
-      DB_USER: ${DB_USER}
-      DB_PASSWORD: ${DB_PASSWORD}
+      DB_TYPE: ${DB_TYPE:-sqlite}
+      DB_PATH: /app/data/gost.db
+      DATABASE_URL: ${DATABASE_URL:-}
       JWT_SECRET: ${JWT_SECRET}
-      LOG_DIR: /app/logs
-      JAVA_OPTS: "-Xms256m -Xmx512m -Dfile.encoding=UTF-8 -Duser.timezone=Asia/Shanghai"
+      SERVER_ADDR: :6365
+      TZ: Asia/Shanghai
     ports:
       - "${BACKEND_PORT}:6365"
     volumes:
-      - backend_logs:/app/logs
-    depends_on:
-      mysql:
-        condition: service_healthy
+      - sqlite_data:/app/data
     networks:
       - gost-network
+    stop_grace_period: 30s
+    stop_signal: SIGTERM
     healthcheck:
       test: ["CMD", "sh", "-c", "wget --no-verbose --tries=1 --spider http://localhost:6365/flow/test || exit 1"]
       interval: 30s
       timeout: 10s
       retries: 5
-      start_period: 90s
+      start_period: 30s
+
+  postgres:
+    image: postgres:16-alpine
+    container_name: flux-panel-postgres
+    restart: unless-stopped
+    logging:
+      driver: json-file
+      options:
+        max-size: "20m"
+    environment:
+      POSTGRES_DB: ${POSTGRES_DB:-flux_panel}
+      POSTGRES_USER: ${POSTGRES_USER:-flux_panel}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-flux_panel_change_me}
+      TZ: Asia/Shanghai
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    networks:
+      - gost-network
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER:-flux_panel} -d ${POSTGRES_DB:-flux_panel}"]
+      interval: 10s
+      timeout: 5s
+      retries: 10
+      start_period: 20s
 
   frontend:
-    image: bqlpfy/vite-frontend:latest
+    image: ghcr.io/sagit-chu/vite-frontend:${FLUX_VERSION:-latest}
     container_name: vite-frontend
     restart: unless-stopped
+    logging:
+      driver: json-file
+      options:
+        max-size: "20m"
+        max-file: "3"
     ports:
       - "${FRONTEND_PORT}:80"
     depends_on:
@@ -67,11 +73,11 @@ services:
 
 
 volumes:
-  mysql_data:
-    name: mysql_data
+  sqlite_data:
+    name: sqlite_data
     driver: local
-  backend_logs:
-    name: backend_logs
+  postgres_data:
+    name: postgres_data
     driver: local
 
 
@@ -82,5 +88,5 @@ networks:
     enable_ipv6: true
     ipam:
       config:
-        - subnet: 172.20.0.0/16 
-        - subnet: fd00:dead:beef::/48
+        - subnet: 172.80.0.0/16 
+        - subnet: fd00:dead:beef::/48

go-backend/AGENTS.md

@@ -0,0 +1,72 @@
+# GO BACKEND KNOWLEDGE BASE
+
+**Generated:** Fri Mar 20 2026
+**Commit:** f45f960
+**Branch:** main
+**Tag:** 2.1.9-beta6
+
+## OVERVIEW
+Go-based Admin API for FLVX. Replaced legacy Spring Boot backend.
+**Stack:** Go 1.24, net/http (std lib), GORM + SQLite/PostgreSQL (glebarez/sqlite - CGO-free).
+
+## STRUCTURE
+```
+go-backend/
+├── cmd/paneld/main.go        # Entry point; starts HTTP server + WebSocket
+├── internal/
+│   ├── http/                 # HTTP layer
+│   │   ├── router.go         # Routes (NewServeMux) + Middleware chain
+│   │   ├── handler/          # API Handlers (User, Tunnel, Node, etc.)
+│   │   ├── middleware/       # JWT, CORS, Logging, Recover
+│   │   └── response/         # JSON response helpers
+│   ├── store/
+│   │   ├── model/model.go    # GORM model structs (single source of truth)
+│   │   └── repo/             # Data Access Layer (Repository pattern, GORM)
+│   │       ├── repository.go           # Core queries, Open/OpenPostgres, AutoMigrate (83k LOC)
+│   │       ├── repository_mutations.go # Mutation helpers (user/node/tunnel/forward CRUD, 43k LOC)
+│   │       ├── repository_federation.go # Federation-specific queries
+│   │       ├── repository_flow.go      # Flow/forward status queries
+│   │       ├── repository_control.go   # Control plane queries
+│   │       └── repository_groups.go    # Group management queries
+│   └── auth/                 # Auth logic
+├── tests/contract/            # Integration/contract tests (14 tests)
+├── Dockerfile                # Multi-stage build (golang:1.24-bookworm → debian:bookworm-slim)
+└── Makefile                  # Build commands
+```
+
+## WHERE TO LOOK
+| Task | Location | Notes |
+|------|----------|-------|
+| **API Routes** | `go-backend/internal/http/router.go` | Registers handlers to `http.ServeMux` |
+| **DB Models** | `go-backend/internal/store/model/model.go` | GORM structs with `TableName()` methods |
+| **Repository** | `go-backend/internal/store/repo/` | GORM-based queries, all DB ops encapsulated |
+| **Auth Middleware** | `go-backend/internal/http/middleware/jwt.go` | Extracts `Authorization` header |
+| **WebSocket** | `go-backend/internal/ws/` | Real-time updates (traffic, status) |
+| **Contract Tests** | `go-backend/tests/contract/` | Integration tests for auth, federation, tunnels |
+
+## CONVENTIONS
+- **GORM ORM**: Uses GORM with `glebarez/sqlite` (CGO-free) and `gorm.io/driver/postgres`.
+- **AutoMigrate**: Schema created at startup via `autoMigrateAll()` — no hand-written DDL.
+- **TableName()**: All models define explicit `TableName()` returning singular snake_case names.
+- **Repository Pattern**: Handlers never access `*gorm.DB` directly — all queries go through `repo.Repository` methods.
+- **Standard Lib**: Uses `net/http` for routing (Go 1.22+ patterns).
+- **Auth**: Expects raw JWT in `Authorization` header (no `Bearer` prefix).
+- **API Envelope**: All responses use `response.R{code, msg, data, ts}` structure.
+- **Config**: Loaded from environment variables (see `cmd/paneld/main.go`).
+- **SQLite Constraints**: `MaxOpenConns(1)`, WAL mode, busy_timeout=5000.
+- **PostgreSQL**: Supported via `DB_TYPE=postgres` and `DATABASE_URL` env vars.
+
+## ANTI-PATTERNS
+- **DO NOT** let handlers call `repo.DB()` directly — add a Repository method instead.
+- **DO NOT CHANGE** handler signatures without updating `router.go`.
+- **DO NOT** use `type:jsonb` or `type:serial` in GORM tags (SQLite incompatible).
+- **DO NOT** omit `TableName()` on new models — GORM pluralizes by default.
+
+## COMMANDS
+```bash
+cd go-backend
+go run ./cmd/paneld       # Default: SERVER_ADDR=:6365
+go test ./...             # Unit tests
+go test ./tests/contract/... # Contract tests
+make build
+```

go-backend/Dockerfile

@@ -0,0 +1,19 @@
+FROM golang:1.24-bookworm AS builder
+WORKDIR /src
+
+COPY go.mod go.sum ./
+RUN go mod download
+
+COPY . .
+ARG TARGETOS
+ARG TARGETARCH
+RUN CGO_ENABLED=0 GOOS=${TARGETOS:-linux} env ${TARGETARCH:+GOARCH=${TARGETARCH}} go build -o /out/paneld ./cmd/paneld
+
+FROM debian:bookworm-slim
+WORKDIR /app
+RUN apt-get update && apt-get install -y --no-install-recommends ca-certificates wget && rm -rf /var/lib/apt/lists/*
+COPY --from=builder /out/paneld /app/paneld
+
+ENV SERVER_ADDR=:6365
+EXPOSE 6365
+ENTRYPOINT ["/app/paneld"]

go-backend/MIGRATION_PLAN.md

@@ -0,0 +1,536 @@
+# 数据库 GORM ORM 迁移计划
+
+**创建时间:** 2026-02-15
+**更新时间:** 2026-02-17 (实施：完成 P1 + P2 + P3 + P5(Repo 查询层 + schema 收尾) + 测试/构建收尾)
+**分支:** main (commit e5e22ba)
+**状态:** 基本完成（保留 4 处 PG 序列修复 DDL `Exec`）
+
+---
+
+## 一、现状分析
+
+### 1.1 迁移前架构 (已归档)
+
+项目原使用 `database/sql` + 手写 raw SQL，通过 `internal/store/db.go` 中的运行时 SQL 重写层实现 SQLite/PostgreSQL 双数据库兼容。
+
+| 组件 | 行数 | 角色 | 当前状态 |
+|------|------|------|----------|
+| `store/db.go` | ~520 | SQL 方言重写层 | **已删除** |
+| `store/sqlite/repository.go` | ~3118 | Repository 查询方法 | **已重写为 store/repo/** |
+| `handler/mutations.go` | ~3748 | Handler 内直接写 raw SQL | **已迁移到 repo（生产 SQL=0）** |
+| `handler/handler.go` | ~1283 | 部分方法用 `repo.DB()` | **大部分已迁移** |
+| `handler/federation.go` | ~若干 | Federation 相关 SQL | **已迁移到 repo** |
+| `handler/control_plane.go` | ~若干 | 控制面相关 SQL | **已迁移到 repo** |
+| `handler/flow_policy.go` | ~若干 | 流量策略相关 SQL | **已迁移到 repo** |
+| `handler/jobs.go` | ~若干 | 后台任务相关 SQL | **已迁移到 repo** |
+| `store/postgres/` | 目录 | PostgreSQL 专用 schema/data | **已删除** |
+
+### 1.2 痛点 (迁移目标)
+
+1. ~~**双 Schema 维护**~~：已通过 AutoMigrate 解决
+2. ~~**SQL 重写层复杂**~~：db.go 已删除
+3. ~~**handler 直接写 SQL**~~：`mutations.go` 生产路径 `tx.Exec`/`tx.Raw` 已清零（测试代码除外）
+4. ~~**无类型安全**~~：repo 业务查询已 GORM 化；剩余 4 处为 PG 序列修复 DDL `Exec`（设计保留）
+5. ~~**模型定义分散**~~：已集中到 model/model.go
+
+---
+
+## 二、方案：引入 GORM ORM（全面重写）
+
+### 2.1 方案变更说明
+
+原计划为 **方案 D（扩展现有 DDL 重写层）**，现变更为 **方案 A（GORM 全面重写）**。
+
+### 2.2 选择 GORM 的理由
+
+1. Go 生态最成熟的 ORM，社区庞大，文档完善
+2. 原生支持 SQLite + PostgreSQL 双数据库，自动处理方言差异
+3. AutoMigrate 消除双 schema 维护，自动处理 AUTOINCREMENT ↔ SERIAL 等
+4. 类型安全的模型定义，编译期检查字段映射
+5. 内置事务管理（closure pattern 自动 rollback/commit）
+6. 自动处理 `"user"` 保留字引号
+
+### 2.3 GORM 驱动选择
+
+| 数据库 | 驱动 | 包 | 备注 |
+|--------|------|-----|------|
+| SQLite | modernc.org/sqlite (CGO-free) | `github.com/glebarez/sqlite` | 纯 Go，无需 CGO |
+| PostgreSQL | pgx/v5 | `gorm.io/driver/postgres` | 默认使用 pgx |
+
+> **注意**：标准 `gorm.io/driver/sqlite` 依赖 CGO，必须使用 `glebarez/sqlite` 包装器。
+
+### 2.4 核心设计原则
+
+1. **Model 集中定义**：所有 GORM Model 在 `internal/store/model/` 包中
+2. **Repository 模式保留**：Repository struct 持有 `*gorm.DB`，对外方法签名尽量不变
+3. **Handler 不直接操作 DB**：所有数据库操作必须封装在 Repository 方法中
+4. **AutoMigrate 替代 schema.sql**：启动时自动迁移，不再维护手写 DDL
+5. **保留 PG 序列修复**：pgloader 迁移场景仍需 `ensurePostgresIDDefaults()`
+6. **Package 重命名**：`store/sqlite` → `store/repo`
+
+---
+
+## 三、Model 设计
+
+### 3.1 GORM 类型映射
+
+| Go 类型 | GORM 行为 | PostgreSQL | SQLite |
+|---------|-----------|------------|--------|
+| `int64` + `primaryKey` | 自增主键 | `bigserial` | `INTEGER PRIMARY KEY AUTOINCREMENT` |
+| `int64` | 64位整数 | `bigint` | `integer` (SQLite 自动 64位) |
+| `int` | 整数 | `integer` | `integer` |
+| `float64` | 浮点 | `double precision` | `real` |
+| `string` + `size:100` | 变长字符 | `varchar(100)` | `varchar(100)` |
+| `string` (无 size) | 文本 | `text` | `text` |
+| `sql.NullInt64` | 可空整数 | `bigint NULL` | `integer NULL` |
+| `sql.NullString` | 可空文本 | `text NULL` | `text NULL` |
+
+### 3.2 表清单（21 张表）
+
+| 表名 | Model | 特殊处理 |
+|------|-------|----------|
+| `user` | `User` | `TableName()` 返回 `"user"` (PG 保留字) |
+| `forward` | `Forward` | |
+| `forward_port` | `ForwardPort` | |
+| `node` | `Node` | |
+| `speed_limit` | `SpeedLimit` | |
+| `statistics_flow` | `StatisticsFlow` | |
+| `tunnel` | `Tunnel` | |
+| `chain_tunnel` | `ChainTunnel` | |
+| `user_tunnel` | `UserTunnel` | 复合唯一索引 (user_id, tunnel_id) |
+| `tunnel_group` | `TunnelGroup` | |
+| `user_group` | `UserGroup` | |
+| `tunnel_group_tunnel` | `TunnelGroupTunnel` | 复合唯一索引 |
+| `user_group_user` | `UserGroupUser` | 复合唯一索引 |
+| `group_permission` | `GroupPermission` | 复合唯一索引 |
+| `group_permission_grant` | `GroupPermissionGrant` | 复合唯一索引 |
+| `vite_config` | `ViteConfig` | name 唯一 |
+| `peer_share` | `PeerShare` | token 唯一 |
+| `peer_share_runtime` | `PeerShareRuntime` | reservation_id, resource_key 唯一 |
+| `federation_tunnel_binding` | `FederationTunnelBinding` | 复合唯一索引 + resource_key 唯一 |
+| `announcement` | `Announcement` | |
+| `schema_version` | `SchemaVersion` | |
+
+---
+
+## 四、详细实施步骤
+
+### 阶段 1：基础设施 — 添加依赖 + 定义 Model ✅ 已完成
+
+| 步骤 | 任务 | 文件 | 状态 |
+|------|------|------|------|
+| 1.1 | `go get gorm.io/gorm gorm.io/driver/postgres github.com/glebarez/sqlite` | `go.mod` | ✅ |
+| 1.2 | 创建 `internal/store/model/model.go`，定义全部 21 个表 Model | 新文件 | ✅ |
+| 1.3 | 为 `user` 表添加 `TableName()` 处理 PG 保留字 | model.go | ✅ |
+| 1.4 | 为复合唯一索引的表添加 GORM 索引 tag | model.go | ✅ |
+| 1.5 | 将 Backup 相关 struct 也迁移到 model/ | model.go | ✅ |
+| 1.6 | 验证 `go build ./...` 编译通过 | - | ✅ |
+
+### 阶段 2：GORM DB 初始化 ✅ 已完成
+
+| 步骤 | 任务 | 文件 | 状态 |
+|------|------|------|------|
+| 2.1 | 修改 Repository struct，`*store.DB` → `*gorm.DB` | repository.go | ✅ |
+| 2.2 | 重写 `Open()` — 用 `glebarez/sqlite` 打开 SQLite | repository.go | ✅ |
+| 2.3 | 重写 `OpenPostgres()` — 用 `gorm.io/driver/postgres` 打开 PG | repository.go | ✅ |
+| 2.4 | 用 `db.AutoMigrate()` 替代 `bootstrapSchema()` | repository.go | ✅ |
+| 2.5 | 实现种子数据逻辑（FirstOrCreate 替代 data.sql） | repository.go | ✅ |
+| 2.6 | 保留并适配 `ensurePostgresIDDefaults()`（用 `db.Exec()`） | repository.go | ✅ |
+| 2.7 | 保留并适配 `migrateSchema()` 增量迁移 | repository.go | ✅ |
+| 2.8 | `DB()` 方法返回 `*gorm.DB` | repository.go | ✅ |
+| 2.9 | SQLite 连接池设置 `MaxOpenConns(1)` 防锁 | repository.go | ✅ |
+
+### 阶段 3：重写 repository 查询方法 ⚠️ ~97% 完成
+
+将所有 raw SQL 查询替换为 GORM 链式调用。
+
+> **2026-02-16 审计**：基础 CRUD 查询已 GORM 化，但 mutation、JOIN 查询、import/export 仍大量使用 raw SQL。
+> **2026-02-17 更新**：已完成 `repository_mutations.go`、Import、以及 `repository_federation/control/flow` 查询层 GORM 化；`repository.go` 中 Raw 已清零，当前仅保留 4 处 PG 序列修复 DDL `Exec`。
+
+| 步骤 | 任务 | 方法数 | 状态 |
+|------|------|--------|------|
+| 3.1 | 用户查询：GetUserByUsername, GetUserByID, UsernameExists* 等 | ~5 | ✅ |
+| 3.2 | 配置查询：GetConfigByName, ListConfigs, UpsertConfig | ~3 | ✅ |
+| 3.3 | 公告查询：GetAnnouncement, UpsertAnnouncement | ~2 | ✅ |
+| 3.4 | 节点查询：GetNodeBy*, ListNodes, UpdateNode* | ~6 | ✅ |
+| 3.5 | 隧道查询：ListTunnels, ListTunnelGroups 等 (含 chain_tunnel 关联) | ~5 | ✅ |
+| 3.6 | 转发查询：ListForwards, resolveForwardIngress | ~3 | ✅ |
+| 3.7 | 用户隧道：GetUserPackageTunnels, GetUserPackageForwards | ~3 | ✅ |
+| 3.8 | 统计/限速：GetStatisticsFlows, ListSpeedLimits, AddFlow | ~4 | ✅ |
+| 3.9 | 分组查询：ListUserGroups, ListGroupPermissions 等 | ~4 | ✅ |
+| 3.10 | PeerShare 全部方法 (CRUD + Runtime) | ~15 | ✅ |
+| 3.11 | FederationTunnelBinding 全部方法 | ~4 | ✅ (Upsert 用 clause.OnConflict) |
+| 3.12 | Export 全部方法 | ~10 | ✅ |
+| 3.13 | Import 全部方法 | ~10 | ✅ 已全部改为 GORM `Clauses(clause.OnConflict)`（见 §9.6） |
+| **3.14** | **repository_mutations.go 全部方法 (~40 个)** | **~40** | **✅ 已全量改为 GORM 链式调用（见 §9.3）** |
+| **3.15** | **repository_federation.go 查询方法** | **~8** | **✅ 已全部改为 GORM 链式调用** |
+| **3.16** | **repository_control.go 复杂查询** | **~5** | **✅ 已全部改为 GORM 链式调用** |
+| **3.17** | **repository_flow.go 查询方法** | **~5** | **✅ 已全部改为 GORM 链式调用** |
+| **3.18** | **Jobs 查询方法 (repository.go 尾部)** | **~8** | **✅ 已 GORM 化** |
+
+### 阶段 4：消除 handler 中直接 SQL — 提取为 Repository 方法 ✅ 已完成
+
+> **2026-02-16 审计**：handler 中的 SQL 已大部分提取到 repo 层，但这些 repo 方法本身仍使用 raw SQL（见阶段 3）。
+> **2026-02-17 更新**：`mutations.go` 直接 `tx.Exec`/`tx.Raw` 已从 27 处降至 0 处（生产代码），详见 §9.4。
+
+mutations.go 和其他 handler 文件中大量直接操作 `h.repo.DB()` 执行 raw SQL，需要：
+1. 将 SQL 逻辑提取为 Repository 方法
+2. Handler 只调用 Repository 方法
+
+| 步骤 | 任务 | 文件 | 状态 |
+|------|------|------|------|
+| 4.1 | 用户 CRUD：userCreate, userUpdate, userDelete, userResetFlow | mutations.go | ✅ 已提取到 repo 方法 |
+| 4.2 | 节点 CRUD：nodeCreate, nodeUpdate, nodeDelete, nodeBatch* | mutations.go | ✅ 已提取到 repo 方法 |
+| 4.3 | 隧道 CRUD：tunnelCreate, tunnelUpdate, tunnelDelete, tunnelBatch* | mutations.go | ✅ tunnelCreate/Update 的 SQL 已下沉 repo |
+| 4.4 | 转发 CRUD：forwardCreate, forwardUpdate, forwardDelete, forwardBatch* | mutations.go | ✅ 已提取到 repo (CreateForwardTx 等) |
+| 4.5 | 限速 CRUD：speedLimitCreate, speedLimitUpdate, speedLimitDelete | mutations.go | ✅ 已提取到 repo 方法 |
+| 4.6 | 分组 CRUD：所有 group* 方法 | mutations.go | ✅ 成员同步/权限管理 SQL 已下沉 repo |
+| 4.7 | 用户隧道：userTunnelAssign, userTunnelRemove, userTunnelUpdate | mutations.go | ✅ 已提取到 repo 方法 |
+| 4.8 | handler.go 中的直接 SQL (openAPISubStore 等) | handler.go | ✅ 已迁移（含 nil 检查清理） |
+| 4.9 | federation.go 中的 raw SQL | federation.go | ✅ 已提取到 repo_federation.go |
+| 4.10 | control_plane.go 中的 raw SQL | control_plane.go | ✅ 已提取到 repo_control.go |
+| 4.11 | flow_policy.go 中的 raw SQL | flow_policy.go | ✅ 已提取到 repo_flow.go |
+| 4.12 | jobs.go 中的 raw SQL | jobs.go | ✅ 已提取到 repo 方法（含 nil 检查清理） |
+
+### 阶段 5：清理旧代码 ✅ 已完成
+
+| 步骤 | 任务 | 文件 | 状态 |
+|------|------|------|------|
+| 5.1 | 删除 `internal/store/postgres/` 整个目录 | 目录删除 | ✅ |
+| 5.2 | 删除 `internal/store/sqlite/sql/` 目录 | 目录删除 | ✅ |
+| 5.3 | 删除 `internal/store/db.go` SQL 重写层 | 文件删除 | ✅ |
+| 5.4 | 删除 `internal/store/db_test.go` | 文件删除 | ✅ |
+| 5.5 | 清理 repository.go 中不再需要的 embed 指令 | 清理 | ✅ |
+
+### 阶段 6：Package 重命名 ✅ 已完成
+
+| 步骤 | 任务 | 文件 | 状态 |
+|------|------|------|------|
+| 6.1 | `internal/store/sqlite/` → `internal/store/repo/` | 目录重命名 | ✅ |
+| 6.2 | 更新所有 import 路径：`store/sqlite` → `store/repo` (13处) | 全局替换 | ✅ |
+
+### 阶段 7：测试 + 验证 ⚠️ 部分完成
+
+| 步骤 | 任务 | 状态 |
+|------|------|------|
+| 7.1 | 更新所有现有测试适配 GORM | ✅ 测试已适配 (使用 repo.DB() 做数据准备) |
+| 7.2 | `go test ./...` 全部通过 | ✅ 已通过（含 `internal/http/handler`、`tests/contract`） |
+| 7.3 | `make build` 构建成功 | ✅ 已通过 |
+
+### 阶段 8：文档更新 ✅ 已完成
+
+| 步骤 | 任务 | 文件 | 状态 |
+|------|------|------|------|
+| 8.1 | 更新 `go-backend/AGENTS.md` — 移除 "DO NOT USE ORM"，记录 GORM 规范 | AGENTS.md | ✅ |
+| 8.2 | 更新根 `AGENTS.md` | AGENTS.md | ✅ |
+| 8.3 | 更新 `handler/AGENTS.md` | AGENTS.md | ✅ |
+
+---
+
+## 五、GORM 使用规范
+
+### 5.1 查询模式
+
+```go
+// 单条查询 - 未找到返回 nil, nil (保持现有语义)
+var user model.User
+err := r.db.Where("id = ?", id).First(&user).Error
+if errors.Is(err, gorm.ErrRecordNotFound) {
+    return nil, nil
+}
+
+// 列表查询
+var users []model.User
+err := r.db.Where("role_id != ?", 0).Order("id ASC").Find(&users).Error
+
+// 创建
+err := r.db.Create(&user).Error
+
+// 更新 (部分字段)
+err := r.db.Model(&model.User{}).Where("id = ?", id).Updates(map[string]interface{}{
+    "user": username, "flow": flow, "updated_time": now,
+}).Error
+
+// 事务 (closure pattern - 自动 rollback/commit)
+err := r.db.Transaction(func(tx *gorm.DB) error {
+    if err := tx.Where("user_id = ?", id).Delete(&model.Forward{}).Error; err != nil {
+        return err
+    }
+    return tx.Where("id = ?", id).Delete(&model.User{}).Error
+})
+
+// 原生 SQL (仅用于复杂查询和 PG 特有操作)
+r.db.Exec("SELECT setval(?::regclass, ?, ?)", seqRef, maxID, true)
+```
+
+### 5.2 关键注意事项
+
+1. **user 保留字**：通过 `TableName()` 返回 `"user"`，GORM 自动处理引号
+2. **SQLite MaxOpenConns**：必须设为 1 防止 "database locked"
+3. **SQLite WAL 模式**：DSN 中配置 `_pragma=journal_mode(WAL)`
+4. **不要用 `type:jsonb`**：SQLite 不支持，用 `serializer:json`
+5. **不要用 `type:serial`**：让 GORM 从 `primaryKey` 自动推断
+6. **AutoMigrate 在 SQLite 中使用 copy-swap-drop**：大表慎用
+
+---
+
+## 六、影响范围
+
+### 需要修改的文件
+
+| 文件 | 修改类型 | 描述 | 当前状态 |
+|------|----------|------|----------|
+| `go.mod` / `go.sum` | 修改 | 添加 GORM + 驱动依赖 | ✅ |
+| `internal/store/model/model.go` | **新增** | 全部 21 个 GORM Model | ✅ |
+| `internal/store/repo/repository.go` | **重写** | 全部查询 GORM 化 | ⚠️ 业务查询已 GORM；仅剩 PG 序列修复 DDL `Exec` 4 处 |
+| `internal/store/repo/repository_mutations.go` | **重写** | Mutation helpers | ✅ 全量 GORM（Raw=0） |
+| `internal/store/repo/repository_federation.go` | **重写** | Federation 查询 | ✅ 已 GORM 化（Raw=0） |
+| `internal/store/repo/repository_control.go` | **重写** | 控制面查询 | ✅ 已 GORM 化（Raw=0） |
+| `internal/store/repo/repository_flow.go` | **重写** | 流量/转发查询 | ✅ 已 GORM 化（Raw=0） |
+| `internal/http/handler/mutations.go` | **重写** | 全部 CRUD 提取到 repo | ✅ 生产代码 `tx.Exec/tx.Raw` = 0 |
+| `internal/http/handler/handler.go` | 修改 | 更新 import、移除直接 SQL | ✅ (仅剩 nil check) |
+| `internal/http/handler/federation.go` | 修改 | GORM 替代 raw SQL | ✅ |
+| `internal/http/handler/control_plane.go` | 修改 | GORM 替代 raw SQL | ✅ |
+| `internal/http/handler/flow_policy.go` | 修改 | GORM 替代 raw SQL | ✅ |
+| `internal/http/handler/jobs.go` | 修改 | GORM 替代 raw SQL | ✅ (仅剩 nil check) |
+| `internal/ws/server.go` | 修改 | 更新 import | ✅ |
+| `internal/app/app.go` | 修改 | 更新 import | ✅ |
+| `internal/store/postgres/` | **删除** | 不再需要 | ✅ |
+| `internal/store/db.go` | **删除** | GORM 自动处理方言 | ✅ |
+| `internal/store/db_test.go` | **删除** | 旧重写层测试 | ✅ |
+| `internal/store/sqlite/sql/` | **删除** | AutoMigrate 替代 | ✅ |
+| `tests/contract/*.go` | 修改 | 适配 GORM | ✅ |
+| `AGENTS.md` (3处) | 更新 | 反映新架构 | ✅ |
+
+### 不需要修改的文件
+
+- `internal/http/router.go` — 路由不变
+- `internal/config/config.go` — 配置不变
+- `internal/auth/` — 认证不变
+- `internal/security/` — 加密不变
+- `internal/http/middleware/` — 中间件不变
+- `internal/http/response/` — 响应格式不变
+- `Dockerfile`, `Makefile` — 构建不变
+
+---
+
+## 七、风险与缓解
+
+| 风险 | 可能性 | 影响 | 缓解措施 |
+|------|--------|------|----------|
+| GORM AutoMigrate SQLite/PG 行为差异 | 中 | 高 | 先写 Model 验证双数据库 AutoMigrate |
+| handler 中散落 raw SQL 遗漏 | 中 | 高 | 全局搜索 `.Exec(`, `.Query(`, `.QueryRow(` |
+| 事务语义变化 | 低 | 中 | 逐方法对比旧代码事务边界 |
+| 大量代码变更导致回归 | 高 | 高 | 分阶段提交，每阶段 `go test` |
+| GORM 性能开销 | 低 | 低 | 此场景下可忽略 |
+| SQLite "database locked" | 中 | 高 | `MaxOpenConns(1)` + WAL 模式 |
+
+---
+
+## 八、迁移顺序原则
+
+1. **先 Model 后查询**：确保 AutoMigrate 双数据库通过
+2. **先 Repository 后 Handler**：Handler 依赖 Repository
+3. **先核心后边缘**：User → Node → Tunnel → Forward → 分组 → Federation
+4. **每步编译**：每完成一组方法确保 `go build ./...` 通过
+5. **最后清理**：全部重写完成后再删除旧代码和重命名 package
+
+---
+
+---
+
+## 九、2026-02-16 审计发现 + 2026-02-17 进展记录
+
+### 9.1 总体完成度
+
+| 指标 | 数值 |
+|------|------|
+| 阶段完成数 | 7/8 完成 (1, 2, 4, 5, 6, 7, 8)，1/8 部分完成 (3) |
+| GORM 链式调用 | ~226 处 |
+| Raw SQL 调用 (`.Exec`/`.Raw`+`.Scan`) | 4 处（生产代码） |
+| GORM 占比 | ~98% |
+| Handler 内 `tx.Exec`/`tx.Raw` | 0 处（生产代码） |
+| `last_insert_rowid()` 生产代码 | 0 处（已消灭） |
+
+### 9.2 ✅ P0：`last_insert_rowid()`（生产代码）已清零
+
+`last_insert_rowid()` 已从生产路径移除，创建主键统一改为 `Create(&model)` 自动回填 ID，
+确保 SQLite / PostgreSQL 双数据库行为一致。
+
+> 备注：测试代码中的历史 SQL 兼容性用例可在后续测试清理阶段单独处理。
+
+### 9.3 ✅ P1：`repository_mutations.go` 已全量 GORM 化
+
+本次已完成 `repository_mutations.go` 的集中清理：
+
+1. User / Node / Tunnel / Forward / UserTunnel / SpeedLimit / Group / Permission 全部 mutation 方法改为 GORM 链式调用。
+2. 事务内级联删除统一为 `tx.Where(...).Delete(&Model{})` 模式。
+3. `ON CONFLICT DO NOTHING` 统一替换为 `Clauses(clause.OnConflict{DoNothing: true})`。
+4. 保留原有调用语义（含 `sql.ErrNoRows` 行为兼容）并完成 `go build ./...` 验证。
+
+> 当前 `repository_mutations.go` 中生产代码 `.Raw(`/`.Exec(` 调用已降为 0。
+
+### 9.4 ✅ P2：Handler `mutations.go` 直接 SQL 已清零
+
+2026-02-17 本轮静态扫描结果：`mutations.go` **0 处** `tx.Exec`/`tx.Raw`（生产代码）。
+
+本轮完成下沉到 repo 的逻辑：
+
+- `tunnelUpdate` 中 `UPDATE tunnel` + `DELETE chain_tunnel`
+- `isRemoteNodeTx` 查询
+- `pickNodePortTx` 的 node/chain_tunnel/forward_port 端口占用查询
+- `replaceTunnelChainsTx` 的 chain_tunnel 写入
+- 分组成员同步（`tunnel_group_tunnel` / `user_group_user`）
+- 权限删除与 grant 回收（`group_permission` / `group_permission_grant` / `user_tunnel`）
+- federation 绑定替换（`federation_tunnel_binding`）
+
+### 9.5 ✅ P3（部分）：已移除 `QueryInt64List` / `QueryPairs` SQL 透传
+
+- `repository_mutations.go` 中两个 SQL 透传入口已删除。
+- Handler 已切换为语义化 repo 方法：
+  - `ListUserIDsByUserGroup`
+  - `ListTunnelIDsByTunnelGroup`
+  - `ListGroupPermissionPairsByUserGroup`
+  - `ListGroupPermissionPairsByTunnelGroup`
+
+### 9.6 ✅ P3：Import 函数已全部 GORM 化
+
+`repository.go` 中 Import 相关函数已完成迁移：
+
+- `importUsers`
+- `importNodes`
+- `importTunnels`（含 `chain_tunnel` 子项 upsert）
+- `importForwards`（含 `forward_port` 覆盖写入）
+- `importUserTunnels`
+- `importSpeedLimits`
+- `importTunnelGroups`
+- `importUserGroups`
+- `importPermissions`
+- `importConfigs`（原本已是 GORM）
+
+迁移后统一采用 `Clauses(clause.OnConflict{Columns: id/name, DoUpdates: ...}).Create(&model)` 模式，
+保留原 `ON CONFLICT ... DO UPDATE` 语义；Import 区段 `tx.Exec`/`tx.Raw` 已清零。
+
+### 9.7 ✅ P4：`h.repo.DB() == nil` 检查已清理
+
+`internal/http/handler/` 下已无 `h.repo.DB()` 直接访问；handler 仅通过语义化 repo 方法进行数据访问。
+
+### 9.8 ✅ P5：Repository 层 Raw 已收敛（仅保留 PG 序列修复 DDL）
+
+当前生产代码中 `.Raw()` 已清零；仅剩 `repository.go` 的 4 处 `Exec()`，全部位于 PG 序列修复 DDL：
+
+- `CREATE SEQUENCE IF NOT EXISTS ...`
+- `ALTER TABLE ... ALTER COLUMN id SET DEFAULT nextval(...)`
+- `ALTER SEQUENCE ... OWNED BY ...`
+- `SELECT setval(...::regclass, ?, ?)`
+
+以上 4 处属于数据库管理 DDL/序列同步语义，当前保留，不再继续向 GORM 链式调用替换。
+
+`repository_federation.go` / `repository_control.go` / `repository_flow.go` 已完成 GORM 化（Raw=0）。
+
+---
+
+## 十、后续工作优先级
+
+| 优先级 | 任务 | 影响范围 | 工作量 |
+|--------|------|----------|--------|
+| **P0** | ✅ 已完成：生产代码中 `last_insert_rowid()` 清零（测试用例待单独清理） | 6 处生产（已完成） | 完成 |
+| **P1** | ✅ 已完成：`repository_mutations.go` ~40 方法改为 GORM 链式调用 | 659 行（已完成） | 完成 |
+| **P2** | ✅ 已完成：`mutations.go` handler 直接 SQL 全部提取为 repo 方法 | mutations.go | 完成 |
+| **P3** | ✅ 已完成：移除 `QueryInt64List`/`QueryPairs` 透传，切换语义化 repo 方法 | 2 个方法 + 调用方（已完成） | 完成 |
+| **P3** | ✅ 已完成：Import 函数 Raw SQL 改为 GORM `Clauses(clause.OnConflict{}).Create()` | 9 个函数（已完成） | 完成 |
+| **P4** | ✅ 已完成：`h.repo.DB() == nil` 检查清理完毕 | 4 处（已完成） | 完成 |
+| **P5** | ✅ 已完成：repo 查询层 Raw 清零，`repository.go` 保留 4 处 PG 序列修复 DDL `Exec`（设计保留） | repository.go | 完成 |
+| **P5** | ✅ 已完成：更新 MIGRATION_PLAN.md 状态标记与收尾记录 | 本文件 | 完成 |
+
+### 10.5 本轮执行记录（2026-02-17，P5 schema 收尾）
+
+1. 完成 `repository.go` schema 迁移段去 Raw：
+   - `normalizeStrategy` 改为 `Model(...).Where(...).Update(...)`
+   - `ensurePostgresIDDefaults`/`ensurePostgresTableIDDefault` 的 information_schema 查询改为 GORM `Table+Joins+Where+Scan`
+   - `syncPostgresTableIDSequence` 的 `MAX(id)` 查询改为 GORM `Table+Select+Scan`
+2. 复扫结果：
+   - `repository.go` `.Raw()` = 0
+   - repo 生产路径剩余 `.Exec()` = 4（全部为 PG 序列修复 DDL）
+3. 验证结果：
+   - `go build ./...` ✅
+   - `go test ./internal/store/repo/...` ✅
+
+### 10.6 本轮执行记录（2026-02-17，测试/构建收尾）
+
+1. 修复事务内 SQLite 连接阻塞（`MaxOpenConns(1)` 场景）：
+   - 新增 `GetNodeRecordTx` 并在 `prepareTunnelCreateState` 使用事务句柄读取节点。
+   - 新增 `GetNodeRemoteFieldsTx` 并在 `tunnelCreate` 事务内改用事务句柄读取远端字段。
+   - `applyFederationRuntime` 改为显式接收 `localDomain`，避免事务内再次走 `repo.GetConfigByName`。
+2. 修复 legacy SQLite schema 迁移契约：
+   - 新增 `prepareSQLiteLegacyColumns` 预补齐 `node/tunnel` 关键列。
+   - SQLite 模式下对已存在 `node/tunnel` 表跳过对应 `AutoMigrate` 重建流程，避免 `node__temp.name` 约束失败。
+3. 验证结果：
+   - `go test ./internal/http/handler/...` ✅
+   - `go test ./tests/contract/...` ✅
+   - `go test ./...` ✅
+   - `go build ./...` ✅
+   - `make build` ✅
+
+### 10.1 本轮执行记录（2026-02-17，P5 查询层）
+
+1. 完成 `repository_federation.go` 全量 GORM 化：
+   - `ListRemoteNodes` / `UpdateNodeRemoteConfig`
+   - `ListActiveBindingsForNode` / `GetNodeBasicInfo`
+   - `ListUsedPortsOnNode` / `ListTunnelIDsByNamePrefix` / `NextIndex`
+2. 完成 `repository_control.go` 全量 GORM 化：
+   - `ListForwardsByTunnel` / `ListForwardPorts` / `GetTunnelOutProtocol`
+   - `ResolveUserTunnelAndLimiter` / `ListChainNodesForTunnel`
+3. 完成 `repository_flow.go` 全量 GORM 化：
+   - `ListActiveForwardsByUser` / `ListActiveForwardsByUserTunnel`
+   - `GetForwardRecord` / `GetTunnelRecord`
+4. 复扫结果：
+   - `repository_federation.go` Raw/Exec = 0
+   - `repository_control.go` Raw/Exec = 0
+   - `repository_flow.go` Raw/Exec = 0
+   - repo 生产路径剩余 Raw/Exec = 9（全部在 `repository.go`）
+5. 验证结果：
+   - `go build ./...` ✅
+   - `go test ./internal/store/repo/...` ✅
+
+### 10.2 本轮执行记录（2026-02-17）
+
+1. 完成 P3 Import 9 个函数的 GORM 化（`repository.go`），并保持 `ON CONFLICT` 语义一致。
+2. 复扫确认：`repository.go` Import 区段 `tx.Exec`/`tx.Raw` 已清零。
+3. 验证结果：
+   - `go build ./...` ✅（使用显式 `GOMODCACHE/GOPATH/GOCACHE/HOME` 环境）
+   - `go test ./internal/store/repo/...` ✅
+
+### 10.3 本轮执行记录（2026-02-17，P2 部分）
+
+1. 将 tunnel 更新/chain 重建路径 SQL 下沉到 `repository_mutations.go`：
+   - 新增 `UpdateTunnelTx`
+   - 新增 `DeleteChainTunnelsByTunnelTx`
+   - 新增 `CreateChainTunnelTx`
+2. 将 handler 内部 SQL helper 迁移到 repo：
+   - 新增 `IsRemoteNodeTx`
+   - 新增 `PickNodePortTx`
+   - `replaceTunnelChainsTx` 改为 handler 方法并改用 repo 调用，不再直接 SQL
+3. 复扫结果：`mutations.go` 直接 SQL 从 27 处降至 17 处。
+4. 验证结果：
+   - `go build ./...` ✅
+   - `go test ./internal/store/repo/...` ✅
+
+### 10.4 本轮执行记录（2026-02-17，P2 收尾）
+
+1. 新增并落地事务语义化 repo 方法：
+   - `ReplaceTunnelGroupMembersTx` / `ReplaceUserGroupMembersTx`
+   - `ListUserIDsByUserGroupTx`
+   - `GetGroupPermissionPairByIDTx` / `DeleteGroupPermissionByIDTx`
+   - `RevokeGroupGrantsForRemovedUsersTx` / `RevokeGroupPermissionPairTx`
+   - `ReplaceFederationTunnelBindingsTx`
+2. 删除 handler 内 SQL helper（`queryInt64ListTx` / `revokeGroupGrantsForRemovedUsersTx` / `revokeGroupPermissionPairTx` / `replaceFederationTunnelBindingsTx`）。
+3. 复扫确认：`mutations.go` 生产路径 `tx.Exec`/`tx.Raw` = 0。
+4. 验证结果：
+   - `go build ./...` ✅
+   - `go test ./internal/store/repo/...` ✅
+
+---
+
+*本文档将随迁移进展实时更新状态标记。*
+*最后审计时间：2026-02-17，审计工具：代码静态分析 (grep/AST) + go build/go test 验证*

go-backend/Makefile

@@ -0,0 +1,12 @@
+GO ?= go
+
+.PHONY: test build run
+
+test:
+	$(GO) test ./...
+
+build:
+	$(GO) build ./cmd/paneld
+
+run:
+	SERVER_ADDR=:6365 $(GO) run ./cmd/paneld

go-backend/cmd/paneld/main.go

@@ -0,0 +1,51 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"log"
+	"net/http"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+
+	"go-backend/internal/app"
+	"go-backend/internal/config"
+)
+
+func main() {
+	cfg := config.FromEnv()
+	if cfg.JWTSecret == "" {
+		log.Println("warning: JWT_SECRET is empty")
+	}
+	log.Printf("starting go-backend on %s (db=%s)", cfg.Addr, cfg.DBPath)
+
+	a, err := app.New(cfg)
+	if err != nil {
+		log.Fatalf("failed to create app: %v", err)
+	}
+
+	errCh := make(chan error, 1)
+	go func() {
+		errCh <- a.Run()
+	}()
+
+	sigCh := make(chan os.Signal, 1)
+	signal.Notify(sigCh, syscall.SIGINT, syscall.SIGTERM)
+
+	select {
+	case sig := <-sigCh:
+		log.Printf("received signal %s, shutting down", sig)
+	case runErr := <-errCh:
+		if runErr != nil && !errors.Is(runErr, http.ErrServerClosed) {
+			log.Fatalf("server stopped unexpectedly: %v", runErr)
+		}
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+	if err := a.Shutdown(ctx); err != nil {
+		log.Fatalf("shutdown failed: %v", err)
+	}
+}

go-backend/go.mod

@@ -0,0 +1,36 @@
+module go-backend
+
+go 1.24.0
+
+toolchain go1.24.4
+
+require (
+	github.com/gorilla/websocket v1.5.3
+	github.com/jackc/pgx/v5 v5.7.3
+	modernc.org/sqlite v1.37.1
+)
+
+require (
+	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/glebarez/go-sqlite v1.21.2 // indirect
+	github.com/glebarez/sqlite v1.11.0 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
+	github.com/jackc/puddle/v2 v2.2.2 // indirect
+	github.com/jinzhu/inflection v1.0.0 // indirect
+	github.com/jinzhu/now v1.1.5 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/ncruces/go-strftime v0.1.9 // indirect
+	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
+	golang.org/x/crypto v0.31.0 // indirect
+	golang.org/x/exp v0.0.0-20250408133849-7e4ce0ab07d0 // indirect
+	golang.org/x/sync v0.17.0 // indirect
+	golang.org/x/sys v0.33.0 // indirect
+	golang.org/x/text v0.29.0 // indirect
+	gorm.io/driver/postgres v1.6.0 // indirect
+	gorm.io/gorm v1.31.1 // indirect
+	modernc.org/libc v1.65.7 // indirect
+	modernc.org/mathutil v1.7.1 // indirect
+	modernc.org/memory v1.11.0 // indirect
+)

go-backend/go.sum

@@ -0,0 +1,87 @@
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go-backend/internal/app/app.go

@@ -0,0 +1,76 @@
+package app
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"strings"
+	"time"
+
+	"go-backend/internal/config"
+	httpserver "go-backend/internal/http"
+	"go-backend/internal/http/handler"
+	"go-backend/internal/store/repo"
+)
+
+type App struct {
+	cfg    config.Config
+	server *http.Server
+	repo   *repo.Repository
+	h      *handler.Handler
+}
+
+func New(cfg config.Config) (*App, error) {
+	var (
+		r   *repo.Repository
+		err error
+	)
+
+	switch strings.ToLower(strings.TrimSpace(cfg.DBType)) {
+	case "", "sqlite":
+		r, err = repo.Open(cfg.DBPath)
+		if err != nil {
+			return nil, fmt.Errorf("open sqlite: %w", err)
+		}
+	case "postgres", "postgresql":
+		r, err = repo.OpenPostgres(cfg.DatabaseURL)
+		if err != nil {
+			return nil, fmt.Errorf("open postgres: %w", err)
+		}
+	default:
+		return nil, fmt.Errorf("unsupported DB_TYPE %q", cfg.DBType)
+	}
+
+	h := handler.New(r, cfg.JWTSecret)
+	router := httpserver.NewRouter(h, cfg.JWTSecret)
+
+	s := &http.Server{
+		Addr:              cfg.Addr,
+		Handler:           router,
+		ReadTimeout:       30 * time.Second,
+		ReadHeaderTimeout: 5 * time.Second,
+		WriteTimeout:      2 * time.Minute,
+		IdleTimeout:       60 * time.Second,
+	}
+
+	return &App{cfg: cfg, server: s, repo: r, h: h}, nil
+}
+
+func (a *App) Run() error {
+	if a.h != nil {
+		a.h.StartBackgroundJobs()
+	}
+	return a.server.ListenAndServe()
+}
+
+func (a *App) Shutdown(ctx context.Context) error {
+	if a.h != nil {
+		a.h.StopBackgroundJobs()
+	}
+	shutdownErr := a.server.Shutdown(ctx)
+	closeErr := a.repo.Close()
+	if shutdownErr != nil {
+		return shutdownErr
+	}
+	return closeErr
+}

go-backend/internal/auth/jwt.go

@@ -0,0 +1,121 @@
+package auth
+
+import (
+	"crypto/hmac"
+	"crypto/sha256"
+	"encoding/base64"
+	"encoding/json"
+	"errors"
+	"strconv"
+	"time"
+)
+
+const (
+	algorithm  = "HmacSHA256"
+	expireTime = 90 * 24 * time.Hour
+)
+
+type Claims struct {
+	Sub    string `json:"sub"`
+	Iat    int64  `json:"iat"`
+	Exp    int64  `json:"exp"`
+	User   string `json:"user"`
+	Name   string `json:"name"`
+	RoleID int    `json:"role_id"`
+}
+
+type tokenHeader struct {
+	Alg string `json:"alg"`
+	Typ string `json:"typ"`
+}
+
+func GenerateToken(userID int64, username string, roleID int, secret string) (string, error) {
+	now := time.Now()
+	header := tokenHeader{Alg: algorithm, Typ: "JWT"}
+	claims := Claims{
+		Sub:    strconv.FormatInt(userID, 10),
+		Iat:    now.Unix(),
+		Exp:    now.Add(expireTime).Unix(),
+		User:   username,
+		Name:   username,
+		RoleID: roleID,
+	}
+
+	headerPart, err := encodeJSON(header)
+	if err != nil {
+		return "", err
+	}
+	payloadPart, err := encodeJSON(claims)
+	if err != nil {
+		return "", err
+	}
+	sig := sign(headerPart+"."+payloadPart, secret)
+
+	return headerPart + "." + payloadPart + "." + sig, nil
+}
+
+func ValidateToken(token, secret string) (Claims, bool) {
+	claims, err := ParseClaims(token, secret)
+	if err != nil {
+		return Claims{}, false
+	}
+	return claims, true
+}
+
+func ParseClaims(token, secret string) (Claims, error) {
+	parts := splitToken(token)
+	if len(parts) != 3 {
+		return Claims{}, errors.New("invalid token")
+	}
+
+	signedContent := parts[0] + "." + parts[1]
+	expected := sign(signedContent, secret)
+	if !hmac.Equal([]byte(expected), []byte(parts[2])) {
+		return Claims{}, errors.New("invalid signature")
+	}
+
+	payloadBytes, err := base64.RawURLEncoding.DecodeString(parts[1])
+	if err != nil {
+		return Claims{}, err
+	}
+
+	var claims Claims
+	if err := json.Unmarshal(payloadBytes, &claims); err != nil {
+		return Claims{}, err
+	}
+
+	if claims.Exp <= time.Now().Unix() {
+		return Claims{}, errors.New("token expired")
+	}
+
+	return claims, nil
+}
+
+func splitToken(token string) []string {
+	parts := make([]string, 0, 3)
+	current := ""
+	for i := 0; i < len(token); i++ {
+		if token[i] == '.' {
+			parts = append(parts, current)
+			current = ""
+			continue
+		}
+		current += string(token[i])
+	}
+	parts = append(parts, current)
+	return parts
+}
+
+func encodeJSON(v interface{}) (string, error) {
+	raw, err := json.Marshal(v)
+	if err != nil {
+		return "", err
+	}
+	return base64.RawURLEncoding.EncodeToString(raw), nil
+}
+
+func sign(content, secret string) string {
+	h := hmac.New(sha256.New, []byte(secret))
+	h.Write([]byte(content))
+	return base64.RawURLEncoding.EncodeToString(h.Sum(nil))
+}

go-backend/internal/config/config.go

@@ -0,0 +1,32 @@
+package config
+
+import "os"
+
+type Config struct {
+	Addr        string
+	DBType      string
+	DBPath      string
+	DatabaseURL string
+	JWTSecret   string
+	LogDir      string
+}
+
+func FromEnv() Config {
+	cfg := Config{
+		Addr:        getEnv("SERVER_ADDR", ":6365"),
+		DBType:      getEnv("DB_TYPE", "sqlite"),
+		DBPath:      getEnv("DB_PATH", "/app/data/gost.db"),
+		DatabaseURL: getEnv("DATABASE_URL", ""),
+		JWTSecret:   getEnv("JWT_SECRET", ""),
+		LogDir:      getEnv("LOG_DIR", "/app/logs"),
+	}
+
+	return cfg
+}
+
+func getEnv(key, fallback string) string {
+	if v := os.Getenv(key); v != "" {
+		return v
+	}
+	return fallback
+}

go-backend/internal/health/checker.go

@@ -0,0 +1,402 @@
+package health
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"log"
+	"net"
+	"strings"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	"go-backend/internal/monitoring"
+	"go-backend/internal/store/model"
+	"go-backend/internal/store/repo"
+	"go-backend/internal/ws"
+)
+
+type nodeCommander interface {
+	SendCommand(nodeID int64, cmdType string, data interface{}, timeout time.Duration) (ws.CommandResult, error)
+}
+
+const serviceMonitorReportInterval = 30 * time.Second // DB write interval per monitor
+
+type Checker struct {
+	repo      *repo.Repository
+	commander nodeCommander
+	lastRun   map[int64]int64
+	inFlight  map[int64]struct{}
+
+	// In-memory latest result per monitor (for real-time API reads)
+	latestResults map[int64]*model.ServiceMonitorResult
+	lastDBWrite   map[int64]int64 // last DB write timestamp per monitorID
+
+	mu       sync.RWMutex
+	cancel   context.CancelFunc
+	wg       sync.WaitGroup
+	checking int32 // atomic flag: 1 = runChecks running, 0 = idle
+}
+
+func NewChecker(repo *repo.Repository, commander nodeCommander) *Checker {
+	return &Checker{
+		repo:          repo,
+		commander:     commander,
+		lastRun:       make(map[int64]int64),
+		inFlight:      make(map[int64]struct{}),
+		latestResults: make(map[int64]*model.ServiceMonitorResult),
+		lastDBWrite:   make(map[int64]int64),
+	}
+}
+
+// GetLatestCached returns the in-memory latest results (updated every 1s).
+// Returns nil if no results are cached.
+func (c *Checker) GetLatestCached() []*model.ServiceMonitorResult {
+	c.mu.RLock()
+	defer c.mu.RUnlock()
+	results := make([]*model.ServiceMonitorResult, 0, len(c.latestResults))
+	for _, r := range c.latestResults {
+		results = append(results, r)
+	}
+	return results
+}
+
+func (c *Checker) Start(ctx context.Context) {
+	c.mu.Lock()
+	ctx, cancel := context.WithCancel(ctx)
+	c.cancel = cancel
+	c.mu.Unlock()
+
+	c.runChecks(ctx)
+
+	for {
+		limits := c.loadServiceMonitorLimits()
+		scanInterval := time.Duration(limits.CheckerScanIntervalSec) * time.Second
+		if scanInterval <= 0 {
+			scanInterval = 1 * time.Second
+		}
+
+		timer := time.NewTimer(scanInterval)
+		select {
+		case <-ctx.Done():
+			timer.Stop()
+			return
+		case <-timer.C:
+			c.runChecks(ctx)
+		}
+	}
+}
+
+func (c *Checker) Stop() {
+	c.mu.Lock()
+	if c.cancel != nil {
+		c.cancel()
+	}
+	c.mu.Unlock()
+	c.wg.Wait()
+}
+
+func (c *Checker) RunOnce(m *model.ServiceMonitor) (*model.ServiceMonitorResult, error) {
+	if c == nil {
+		return nil, errors.New("checker not initialized")
+	}
+	if m == nil {
+		return nil, errors.New("monitor is nil")
+	}
+	limits := c.loadServiceMonitorLimits()
+	return c.executeCheck(m, time.Now().UnixMilli(), limits), nil
+}
+
+func (c *Checker) runChecks(ctx context.Context) {
+	// Skip if previous round is still running (interval < timeout guard)
+	if !atomic.CompareAndSwapInt32(&c.checking, 0, 1) {
+		return
+	}
+	defer atomic.StoreInt32(&c.checking, 0)
+
+	if c == nil || c.repo == nil {
+		return
+	}
+
+	limits := c.loadServiceMonitorLimits()
+	monitors, err := c.repo.ListEnabledServiceMonitors()
+	if err != nil {
+		log.Printf("service monitor scheduler failed op=list_enabled err=%v", err)
+		return
+	}
+	if len(monitors) == 0 {
+		return
+	}
+
+	// Use persisted result timestamps to avoid restart bursts.
+	latest, err := c.repo.GetLatestServiceMonitorResults()
+	if err != nil {
+		log.Printf("service monitor scheduler failed op=get_latest_results err=%v", err)
+		latest = nil
+	}
+	persistedLast := make(map[int64]int64, len(latest))
+	for _, r := range latest {
+		if r.MonitorID <= 0 || r.Timestamp <= 0 {
+			continue
+		}
+		persistedLast[r.MonitorID] = r.Timestamp
+	}
+
+	now := time.Now().UnixMilli()
+	due := make([]model.ServiceMonitor, 0, len(monitors))
+	for _, m := range monitors {
+		select {
+		case <-ctx.Done():
+			return
+		default:
+		}
+
+		intervalSec := m.IntervalSec
+		if intervalSec <= 0 {
+			intervalSec = limits.DefaultIntervalSec
+		}
+		if intervalSec < limits.MinIntervalSec {
+			intervalSec = limits.MinIntervalSec
+		}
+		intervalMs := int64(intervalSec) * 1000
+
+		c.mu.Lock()
+		if _, ok := c.inFlight[m.ID]; ok {
+			c.mu.Unlock()
+			continue
+		}
+
+		lastSeen := persistedLast[m.ID]
+		if v := c.lastRun[m.ID]; v > lastSeen {
+			lastSeen = v
+		}
+		if lastSeen > 0 && intervalMs > 0 && now-lastSeen < intervalMs {
+			c.mu.Unlock()
+			continue
+		}
+
+		c.inFlight[m.ID] = struct{}{}
+		// Use now as a best-effort guard against overlapping scans; the final
+		// timestamp is updated again when the result is persisted.
+		c.lastRun[m.ID] = now
+		c.mu.Unlock()
+
+		due = append(due, m)
+	}
+	if len(due) == 0 {
+		return
+	}
+
+	workerLimit := limits.WorkerLimit
+	if workerLimit <= 0 {
+		workerLimit = 1
+	}
+	if workerLimit > len(due) {
+		workerLimit = len(due)
+	}
+
+	jobs := make(chan model.ServiceMonitor, len(due))
+	for _, m := range due {
+		jobs <- m
+	}
+	close(jobs)
+
+	reportIntervalMs := int64(serviceMonitorReportInterval / time.Millisecond)
+
+	for i := 0; i < workerLimit; i++ {
+		c.wg.Add(1)
+		go func() {
+			defer c.wg.Done()
+			for {
+				select {
+				case <-ctx.Done():
+					return
+				case m, ok := <-jobs:
+					if !ok {
+						return
+					}
+					ts := time.Now().UnixMilli()
+					result := c.executeCheck(&m, ts, limits)
+
+					// Always update in-memory cache for real-time reads
+					c.mu.Lock()
+					c.latestResults[m.ID] = result
+					c.lastRun[m.ID] = result.Timestamp
+					delete(c.inFlight, m.ID)
+
+					// Only write to DB every 30s per monitor
+					lastWrite := c.lastDBWrite[m.ID]
+					writeToDB := ts-lastWrite >= reportIntervalMs
+					if writeToDB {
+						c.lastDBWrite[m.ID] = ts
+					}
+					c.mu.Unlock()
+
+					if writeToDB {
+						if err := c.repo.InsertServiceMonitorResult(result); err != nil {
+							log.Printf("monitoring write failed op=service_monitor_result.insert monitor_id=%d err=%v", result.MonitorID, err)
+						}
+					}
+				}
+			}
+		}()
+	}
+}
+
+func (c *Checker) executeCheck(m *model.ServiceMonitor, timestamp int64, limits monitoring.ServiceMonitorLimits) *model.ServiceMonitorResult {
+	result := &model.ServiceMonitorResult{
+		MonitorID: m.ID,
+		NodeID:    m.NodeID,
+		Timestamp: timestamp,
+	}
+
+	timeoutSec := m.TimeoutSec
+	if timeoutSec <= 0 {
+		timeoutSec = limits.DefaultTimeoutSec
+	}
+	if timeoutSec < limits.MinTimeoutSec {
+		timeoutSec = limits.MinTimeoutSec
+	}
+	if timeoutSec > limits.MaxTimeoutSec {
+		timeoutSec = limits.MaxTimeoutSec
+	}
+
+	timeout := time.Duration(timeoutSec) * time.Second
+
+	// When nodeId is set, run checks on the specified node.
+	if m.NodeID > 0 {
+		c.checkOnNode(m, timeoutSec, timeout, result)
+		return result
+	}
+
+	switch strings.ToLower(strings.TrimSpace(m.Type)) {
+	case "tcp":
+		c.checkTCP(m.Target, timeout, result)
+	case "icmp":
+		result.Success = 0
+		result.ErrorMessage = "ICMP 监控必须指定执行节点"
+	default:
+		result.Success = 0
+		result.ErrorMessage = fmt.Sprintf("不支持的检查类型: %s", m.Type)
+	}
+
+	return result
+}
+
+func (c *Checker) loadServiceMonitorLimits() monitoring.ServiceMonitorLimits {
+	defaults := monitoring.DefaultServiceMonitorLimits()
+	if c == nil || c.repo == nil {
+		return defaults
+	}
+	cfg, err := c.repo.GetConfigsByNames([]string{
+		monitoring.ConfigServiceMonitorCheckerScanIntervalSec,
+		monitoring.ConfigServiceMonitorWorkerLimit,
+		monitoring.ConfigServiceMonitorMinIntervalSec,
+		monitoring.ConfigServiceMonitorDefaultIntervalSec,
+		monitoring.ConfigServiceMonitorMinTimeoutSec,
+		monitoring.ConfigServiceMonitorDefaultTimeoutSec,
+		monitoring.ConfigServiceMonitorMaxTimeoutSec,
+	})
+	if err != nil {
+		return defaults
+	}
+	return monitoring.ServiceMonitorLimitsFromConfigMap(cfg)
+}
+
+type serviceMonitorCheckRequest struct {
+	MonitorID  int64  `json:"monitorId"`
+	Type       string `json:"type"`
+	Target     string `json:"target"`
+	TimeoutSec int    `json:"timeoutSec"`
+}
+
+func (c *Checker) checkOnNode(m *model.ServiceMonitor, timeoutSec int, timeout time.Duration, result *model.ServiceMonitorResult) {
+	if c == nil || m == nil || result == nil {
+		return
+	}
+	if c.commander == nil {
+		result.Success = 0
+		result.ErrorMessage = "节点检查不可用"
+		return
+	}
+
+	checkType := strings.ToLower(strings.TrimSpace(m.Type))
+	if checkType != "tcp" && checkType != "icmp" {
+		result.Success = 0
+		result.ErrorMessage = fmt.Sprintf("不支持的检查类型: %s", m.Type)
+		return
+	}
+	if strings.TrimSpace(m.Target) == "" {
+		result.Success = 0
+		result.ErrorMessage = "检查目标为空"
+		return
+	}
+
+	req := serviceMonitorCheckRequest{
+		MonitorID:  m.ID,
+		Type:       checkType,
+		Target:     m.Target,
+		TimeoutSec: timeoutSec,
+	}
+
+	cmdTimeout := timeout
+	if cmdTimeout < 2*time.Second {
+		cmdTimeout = 2 * time.Second
+	}
+	cmdTimeout = cmdTimeout + 2*time.Second
+
+	cmdRes, err := c.commander.SendCommand(m.NodeID, "ServiceMonitorCheck", req, cmdTimeout)
+	if err != nil {
+		result.Success = 0
+		result.ErrorMessage = err.Error()
+		return
+	}
+	if cmdRes.Data == nil {
+		result.Success = 0
+		result.ErrorMessage = "节点返回为空"
+		return
+	}
+
+	if v, ok := cmdRes.Data["success"]; ok {
+		if b, ok := v.(bool); ok {
+			if b {
+				result.Success = 1
+			} else {
+				result.Success = 0
+			}
+		}
+	}
+	if v, ok := cmdRes.Data["latencyMs"]; ok {
+		if f, ok := v.(float64); ok {
+			result.LatencyMs = f
+		}
+	}
+	if v, ok := cmdRes.Data["statusCode"]; ok {
+		if f, ok := v.(float64); ok {
+			result.StatusCode = int(f)
+		}
+	}
+	if v, ok := cmdRes.Data["errorMessage"]; ok {
+		if s, ok := v.(string); ok {
+			result.ErrorMessage = s
+		}
+	}
+}
+
+func (c *Checker) checkTCP(target string, timeout time.Duration, result *model.ServiceMonitorResult) {
+	start := time.Now()
+
+	conn, err := net.DialTimeout("tcp", target, timeout)
+	latency := time.Since(start)
+
+	result.LatencyMs = float64(latency.Milliseconds())
+
+	if err != nil {
+		result.Success = 0
+		result.ErrorMessage = err.Error()
+		return
+	}
+	_ = conn.Close()
+	result.Success = 1
+}

go-backend/internal/health/checker_test.go

@@ -0,0 +1,477 @@
+package health
+
+import (
+	"context"
+	"net"
+	"testing"
+	"time"
+
+	"go-backend/internal/monitoring"
+	"go-backend/internal/store/model"
+	"go-backend/internal/store/repo"
+	"go-backend/internal/ws"
+)
+
+type fakeCommander struct {
+	lastNodeID int64
+	lastType   string
+	lastData   interface{}
+	res        ws.CommandResult
+	err        error
+}
+
+type delayedCommander struct {
+	delayByMonitorID map[int64]time.Duration
+}
+
+func (d *delayedCommander) SendCommand(nodeID int64, cmdType string, data interface{}, _ time.Duration) (ws.CommandResult, error) {
+	_ = nodeID
+	_ = cmdType
+	if req, ok := data.(serviceMonitorCheckRequest); ok {
+		if delay := d.delayByMonitorID[req.MonitorID]; delay > 0 {
+			time.Sleep(delay)
+		}
+	}
+	return ws.CommandResult{
+		Success: true,
+		Data: map[string]interface{}{
+			"success":   true,
+			"latencyMs": float64(1),
+		},
+	}, nil
+}
+
+func (f *fakeCommander) SendCommand(nodeID int64, cmdType string, data interface{}, _ time.Duration) (ws.CommandResult, error) {
+	f.lastNodeID = nodeID
+	f.lastType = cmdType
+	f.lastData = data
+	return f.res, f.err
+}
+
+func TestTCPHealthCheckViaMonitor(t *testing.T) {
+	listener, err := net.Listen("tcp", "127.0.0.1:0")
+	if err != nil {
+		t.Fatalf("listen: %v", err)
+	}
+	defer listener.Close()
+	addr := listener.Addr().String()
+
+	go func() {
+		for {
+			conn, err := listener.Accept()
+			if err != nil {
+				return
+			}
+			conn.Close()
+		}
+	}()
+
+	t.Run("successful tcp check", func(t *testing.T) {
+		checker := NewChecker(nil, nil)
+		limits := checker.loadServiceMonitorLimits()
+		now := time.Now().UnixMilli()
+		monitor := &model.ServiceMonitor{
+			Type:       "tcp",
+			Target:     addr,
+			TimeoutSec: 5,
+		}
+		result := checker.executeCheck(monitor, now, limits)
+		if result.Success != 1 {
+			t.Fatalf("expected success, got error: %s", result.ErrorMessage)
+		}
+		if result.LatencyMs < 0 {
+			t.Fatalf("expected non-negative latency, got %f", result.LatencyMs)
+		}
+	})
+
+	t.Run("failed tcp check - connection refused", func(t *testing.T) {
+		checker := NewChecker(nil, nil)
+		limits := checker.loadServiceMonitorLimits()
+		now := time.Now().UnixMilli()
+		monitor := &model.ServiceMonitor{
+			Type:       "tcp",
+			Target:     "127.0.0.1:1",
+			TimeoutSec: 1,
+		}
+		result := checker.executeCheck(monitor, now, limits)
+		if result.Success == 1 {
+			t.Fatalf("expected failure for connection refused")
+		}
+		if result.ErrorMessage == "" {
+			t.Fatalf("expected error message")
+		}
+	})
+}
+
+func TestCheckerRunChecks(t *testing.T) {
+	r, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	listener, err := net.Listen("tcp", "127.0.0.1:0")
+	if err != nil {
+		t.Fatalf("listen: %v", err)
+	}
+	defer listener.Close()
+	tcpAddr := listener.Addr().String()
+
+	go func() {
+		for {
+			conn, err := listener.Accept()
+			if err != nil {
+				return
+			}
+			conn.Close()
+		}
+	}()
+
+	now := time.Now().UnixMilli()
+
+	monitors := []*model.ServiceMonitor{
+		{
+			Name:        "TCP Monitor",
+			Type:        "tcp",
+			Target:      tcpAddr,
+			IntervalSec: 60,
+			TimeoutSec:  5,
+			NodeID:      0,
+			Enabled:     1,
+			CreatedTime: now,
+			UpdatedTime: now,
+		},
+		{
+			Name:        "TCP Monitor 2",
+			Type:        "tcp",
+			Target:      tcpAddr,
+			IntervalSec: 60,
+			TimeoutSec:  5,
+			NodeID:      0,
+			Enabled:     1,
+			CreatedTime: now,
+			UpdatedTime: now,
+		},
+		{
+			Name:        "Disabled Monitor",
+			Type:        "tcp",
+			Target:      "127.0.0.1:1",
+			IntervalSec: 60,
+			TimeoutSec:  5,
+			NodeID:      0,
+			Enabled:     0,
+			CreatedTime: now,
+			UpdatedTime: now,
+		},
+	}
+
+	for _, m := range monitors {
+		if err := r.CreateServiceMonitor(m); err != nil {
+			t.Fatalf("create monitor: %v", err)
+		}
+	}
+
+	monitors[2].Enabled = 0
+	if err := r.UpdateServiceMonitor(monitors[2]); err != nil {
+		t.Fatalf("update disabled monitor: %v", err)
+	}
+
+	enabledMonitors, err := r.ListEnabledServiceMonitors()
+	if err != nil {
+		t.Fatalf("list enabled monitors: %v", err)
+	}
+	if len(enabledMonitors) != 2 {
+		t.Fatalf("expected 2 enabled monitors, got %d", len(enabledMonitors))
+	}
+
+	checker := NewChecker(r, nil)
+
+	ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
+	defer cancel()
+
+	go checker.Start(ctx)
+	time.Sleep(500 * time.Millisecond)
+
+	results, err := r.GetServiceMonitorResults(monitors[0].ID, 10)
+	if err != nil {
+		t.Fatalf("get tcp results: %v", err)
+	}
+	if len(results) == 0 {
+		t.Fatalf("expected at least one result for tcp monitor")
+	}
+	for _, res := range results {
+		if res.Success != 1 {
+			t.Fatalf("expected success for tcp monitor, got failure: %s", res.ErrorMessage)
+		}
+	}
+
+	results2, err := r.GetServiceMonitorResults(monitors[1].ID, 10)
+	if err != nil {
+		t.Fatalf("get tcp results 2: %v", err)
+	}
+	if len(results2) == 0 {
+		t.Fatalf("expected at least one result for tcp monitor 2")
+	}
+	for _, res := range results2 {
+		if res.Success != 1 {
+			t.Fatalf("expected success for tcp monitor 2, got failure: %s", res.ErrorMessage)
+		}
+	}
+
+	disabledResults, err := r.GetServiceMonitorResults(monitors[2].ID, 10)
+	if err != nil {
+		t.Fatalf("get disabled results: %v", err)
+	}
+	if len(disabledResults) != 0 {
+		t.Fatalf("expected no results for disabled monitor, got %d", len(disabledResults))
+	}
+}
+
+func TestCheckerUnsupportedType(t *testing.T) {
+	checker := NewChecker(nil, nil)
+	limits := checker.loadServiceMonitorLimits()
+	now := time.Now().UnixMilli()
+	monitor := &model.ServiceMonitor{
+		Type:       "http",
+		Target:     "https://example.com",
+		TimeoutSec: 5,
+	}
+	result := checker.executeCheck(monitor, now, limits)
+	if result.Success == 1 {
+		t.Fatalf("expected failure for unsupported type")
+	}
+	if result.ErrorMessage == "" {
+		t.Fatalf("expected error message for unsupported type")
+	}
+}
+
+func TestCheckerDefaultTimeout(t *testing.T) {
+	listener, err := net.Listen("tcp", "127.0.0.1:0")
+	if err != nil {
+		t.Fatalf("listen: %v", err)
+	}
+	defer listener.Close()
+	addr := listener.Addr().String()
+
+	go func() {
+		for {
+			conn, err := listener.Accept()
+			if err != nil {
+				return
+			}
+			conn.Close()
+		}
+	}()
+
+	checker := NewChecker(nil, nil)
+	limits := checker.loadServiceMonitorLimits()
+	now := time.Now().UnixMilli()
+	monitor := &model.ServiceMonitor{
+		Type:       "tcp",
+		Target:     addr,
+		TimeoutSec: 0,
+	}
+	result := checker.executeCheck(monitor, now, limits)
+	if result.Success != 1 {
+		t.Fatalf("expected success with default timeout, got error: %s", result.ErrorMessage)
+	}
+}
+
+func TestCheckerStop(t *testing.T) {
+	r, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	listener, err := net.Listen("tcp", "127.0.0.1:0")
+	if err != nil {
+		t.Fatalf("listen: %v", err)
+	}
+	defer listener.Close()
+
+	go func() {
+		for {
+			conn, err := listener.Accept()
+			if err != nil {
+				return
+			}
+			conn.Close()
+		}
+	}()
+
+	now := time.Now().UnixMilli()
+	monitor := &model.ServiceMonitor{
+		Name:        "Test Monitor",
+		Type:        "tcp",
+		Target:      listener.Addr().String(),
+		IntervalSec: 60,
+		TimeoutSec:  5,
+		NodeID:      0,
+		Enabled:     1,
+		CreatedTime: now,
+		UpdatedTime: now,
+	}
+	if err := r.CreateServiceMonitor(monitor); err != nil {
+		t.Fatalf("create monitor: %v", err)
+	}
+
+	checker := NewChecker(r, nil)
+
+	ctx := context.Background()
+	go checker.Start(ctx)
+
+	time.Sleep(100 * time.Millisecond)
+	checker.Stop()
+
+	results, err := r.GetServiceMonitorResults(monitor.ID, 10)
+	if err != nil {
+		t.Fatalf("get results: %v", err)
+	}
+	if len(results) == 0 {
+		t.Fatalf("expected at least one result before stop")
+	}
+}
+
+func TestCheckerRunsOnNodeWhenNodeIDSet(t *testing.T) {
+	fake := &fakeCommander{
+		res: ws.CommandResult{
+			Success: true,
+			Data: map[string]interface{}{
+				"success":      false,
+				"latencyMs":    float64(12),
+				"errorMessage": "unreachable",
+			},
+		},
+	}
+	checker := NewChecker(nil, fake)
+	limits := checker.loadServiceMonitorLimits()
+	now := time.Now().UnixMilli()
+	monitor := &model.ServiceMonitor{
+		ID:         99,
+		Type:       "icmp",
+		Target:     "8.8.8.8",
+		TimeoutSec: 2,
+		NodeID:     123,
+	}
+	res := checker.executeCheck(monitor, now, limits)
+	if fake.lastNodeID != 123 {
+		t.Fatalf("expected command to be sent to node 123, got %d", fake.lastNodeID)
+	}
+	if fake.lastType != "ServiceMonitorCheck" {
+		t.Fatalf("expected ServiceMonitorCheck command, got %s", fake.lastType)
+	}
+	if res.Success != 0 {
+		t.Fatalf("expected failed result from node check")
+	}
+	if res.ErrorMessage != "unreachable" {
+		t.Fatalf("expected errorMessage unreachable, got %q", res.ErrorMessage)
+	}
+}
+
+func TestCheckerDoesNotBurstOnRestartWhenRecentResultsExist(t *testing.T) {
+	r, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	now := time.Now().UnixMilli()
+	monitor := &model.ServiceMonitor{
+		Name:        "recent-monitor",
+		Type:        "tcp",
+		Target:      "127.0.0.1:1",
+		IntervalSec: 60,
+		TimeoutSec:  1,
+		NodeID:      0,
+		Enabled:     1,
+		CreatedTime: now,
+		UpdatedTime: now,
+	}
+	if err := r.CreateServiceMonitor(monitor); err != nil {
+		t.Fatalf("create monitor: %v", err)
+	}
+	if err := r.InsertServiceMonitorResult(&model.ServiceMonitorResult{
+		MonitorID: monitor.ID,
+		NodeID:    0,
+		Timestamp: now - 10_000,
+		Success:   1,
+	}); err != nil {
+		t.Fatalf("seed recent result: %v", err)
+	}
+
+	checker := NewChecker(r, nil)
+	ctx, cancel := context.WithCancel(context.Background())
+	go checker.Start(ctx)
+	// Give the initial scan a chance to run.
+	time.Sleep(200 * time.Millisecond)
+	cancel()
+	checker.Stop()
+
+	results, err := r.GetServiceMonitorResults(monitor.ID, 10)
+	if err != nil {
+		t.Fatalf("get results: %v", err)
+	}
+	if len(results) != 1 {
+		t.Fatalf("expected no immediate rerun (1 result), got %d", len(results))
+	}
+}
+
+func TestCheckerConcurrencyPreventsSlowMonitorBlockingOthers(t *testing.T) {
+	r, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	now := time.Now().UnixMilli()
+	// Force worker limit to at least 2 for this test.
+	_ = r.UpsertConfig(monitoring.ConfigServiceMonitorWorkerLimit, "2", now)
+
+	slow := &model.ServiceMonitor{
+		Name:        "slow",
+		Type:        "icmp",
+		Target:      "8.8.8.8",
+		IntervalSec: 60,
+		TimeoutSec:  1,
+		NodeID:      123,
+		Enabled:     1,
+		CreatedTime: now,
+		UpdatedTime: now,
+	}
+	if err := r.CreateServiceMonitor(slow); err != nil {
+		t.Fatalf("create slow monitor: %v", err)
+	}
+	fast := &model.ServiceMonitor{
+		Name:        "fast",
+		Type:        "icmp",
+		Target:      "1.1.1.1",
+		IntervalSec: 60,
+		TimeoutSec:  1,
+		NodeID:      123,
+		Enabled:     1,
+		CreatedTime: now,
+		UpdatedTime: now,
+	}
+	if err := r.CreateServiceMonitor(fast); err != nil {
+		t.Fatalf("create fast monitor: %v", err)
+	}
+
+	cmd := &delayedCommander{delayByMonitorID: map[int64]time.Duration{slow.ID: 800 * time.Millisecond}}
+	checker := NewChecker(r, cmd)
+	ctx, cancel := context.WithCancel(context.Background())
+	go checker.Start(ctx)
+
+	// Fast monitor should complete even while slow one is still running.
+	time.Sleep(250 * time.Millisecond)
+	results, err := r.GetServiceMonitorResults(fast.ID, 10)
+	if err != nil {
+		t.Fatalf("get fast results: %v", err)
+	}
+	if len(results) == 0 {
+		t.Fatalf("expected fast monitor to have results without waiting for slow")
+	}
+
+	cancel()
+	checker.Stop()
+}

go-backend/internal/http/client/federation.go

@@ -0,0 +1,386 @@
+package client
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+	"time"
+)
+
+type FederationClient struct {
+	client *http.Client
+}
+
+type RemoteNodeInfo struct {
+	ShareID        int64  `json:"shareId"`
+	ShareName      string `json:"shareName"`
+	NodeID         int64  `json:"nodeId"`
+	NodeName       string `json:"nodeName"`
+	ServerIP       string `json:"serverIp"`
+	Status         int    `json:"status"`
+	MaxBandwidth   int64  `json:"maxBandwidth"`
+	CurrentFlow    int64  `json:"currentFlow"`
+	ExpiryTime     int64  `json:"expiryTime"`
+	PortRangeStart int    `json:"portRangeStart"`
+	PortRangeEnd   int    `json:"portRangeEnd"`
+}
+
+type RemoteTunnelResponse struct {
+	TunnelID int64 `json:"tunnelId"`
+}
+
+type RuntimeReservePortRequest struct {
+	ResourceKey   string `json:"resourceKey"`
+	Protocol      string `json:"protocol"`
+	RequestedPort int    `json:"requestedPort"`
+}
+
+type RuntimeReservePortResponse struct {
+	ReservationID string `json:"reservationId"`
+	BindingID     string `json:"bindingId"`
+	AllocatedPort int    `json:"allocatedPort"`
+}
+
+type RuntimeTarget struct {
+	Host     string `json:"host"`
+	Port     int    `json:"port"`
+	Protocol string `json:"protocol"`
+}
+
+type RuntimeApplyRoleRequest struct {
+	ReservationID string          `json:"reservationId"`
+	ResourceKey   string          `json:"resourceKey"`
+	Role          string          `json:"role"`
+	Protocol      string          `json:"protocol"`
+	Strategy      string          `json:"strategy"`
+	Targets       []RuntimeTarget `json:"targets"`
+}
+
+type RuntimeApplyRoleResponse struct {
+	BindingID     string `json:"bindingId"`
+	ReservationID string `json:"reservationId"`
+	AllocatedPort int    `json:"allocatedPort"`
+}
+
+type RuntimeReleaseRoleRequest struct {
+	BindingID     string `json:"bindingId"`
+	ReservationID string `json:"reservationId"`
+	ResourceKey   string `json:"resourceKey"`
+}
+
+type RuntimeDiagnoseRequest struct {
+	IP      string `json:"ip"`
+	Port    int    `json:"port"`
+	Count   int    `json:"count"`
+	Timeout int    `json:"timeout"`
+}
+
+type RuntimeNodeCommandRequest struct {
+	CommandType string      `json:"commandType"`
+	Data        interface{} `json:"data"`
+}
+
+type RuntimeNodeCommandResponse struct {
+	Type    string                 `json:"type"`
+	Success bool                   `json:"success"`
+	Message string                 `json:"message"`
+	Data    map[string]interface{} `json:"data,omitempty"`
+}
+
+func NewFederationClient() *FederationClient {
+	return &FederationClient{
+		client: &http.Client{
+			Timeout: 10 * time.Second,
+		},
+	}
+}
+
+func NewFederationClientWithTimeout(timeout time.Duration) *FederationClient {
+	return &FederationClient{
+		client: &http.Client{
+			Timeout: timeout,
+		},
+	}
+}
+
+func (c *FederationClient) Connect(url, token, localDomain string) (*RemoteNodeInfo, error) {
+	url = strings.TrimSuffix(url, "/")
+	req, err := http.NewRequest("POST", url+"/api/v1/federation/connect", nil)
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("Authorization", "Bearer "+token)
+	if localDomain != "" {
+		req.Header.Set("X-Panel-Domain", localDomain)
+	}
+	req.Header.Set("Content-Type", "application/json")
+
+	resp, err := c.client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != 200 {
+		body, _ := io.ReadAll(resp.Body)
+		return nil, fmt.Errorf("remote error %d: %s", resp.StatusCode, string(body))
+	}
+
+	var res struct {
+		Code int            `json:"code"`
+		Msg  string         `json:"msg"`
+		Data RemoteNodeInfo `json:"data"`
+	}
+	if err := json.NewDecoder(resp.Body).Decode(&res); err != nil {
+		return nil, err
+	}
+	if res.Code != 0 {
+		return nil, fmt.Errorf("remote api error: %s", res.Msg)
+	}
+
+	return &res.Data, nil
+}
+
+func (c *FederationClient) CreateTunnel(url, token, localDomain, protocol string, remotePort int, target string) (*RemoteTunnelResponse, error) {
+	url = strings.TrimSuffix(url, "/")
+	payload := map[string]interface{}{
+		"protocol":   protocol,
+		"remotePort": remotePort,
+		"target":     target,
+	}
+	bodyBytes, _ := json.Marshal(payload)
+	req, err := http.NewRequest("POST", url+"/api/v1/federation/tunnel/create", strings.NewReader(string(bodyBytes)))
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("Authorization", "Bearer "+token)
+	if localDomain != "" {
+		req.Header.Set("X-Panel-Domain", localDomain)
+	}
+	req.Header.Set("Content-Type", "application/json")
+
+	resp, err := c.client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != 200 {
+		body, _ := io.ReadAll(resp.Body)
+		return nil, fmt.Errorf("remote error %d: %s", resp.StatusCode, string(body))
+	}
+
+	var res struct {
+		Code int                  `json:"code"`
+		Msg  string               `json:"msg"`
+		Data RemoteTunnelResponse `json:"data"`
+	}
+	if err := json.NewDecoder(resp.Body).Decode(&res); err != nil {
+		return nil, err
+	}
+	if res.Code != 0 {
+		return nil, fmt.Errorf("remote api error: %s", res.Msg)
+	}
+
+	return &res.Data, nil
+}
+
+func (c *FederationClient) ReservePort(url, token, localDomain string, reqData RuntimeReservePortRequest) (*RuntimeReservePortResponse, error) {
+	url = strings.TrimSuffix(url, "/")
+	bodyBytes, _ := json.Marshal(reqData)
+	req, err := http.NewRequest("POST", url+"/api/v1/federation/runtime/reserve-port", strings.NewReader(string(bodyBytes)))
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("Authorization", "Bearer "+token)
+	if localDomain != "" {
+		req.Header.Set("X-Panel-Domain", localDomain)
+	}
+	req.Header.Set("Content-Type", "application/json")
+
+	resp, err := c.client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != 200 {
+		body, _ := io.ReadAll(resp.Body)
+		return nil, fmt.Errorf("remote error %d: %s", resp.StatusCode, string(body))
+	}
+
+	var res struct {
+		Code int                        `json:"code"`
+		Msg  string                     `json:"msg"`
+		Data RuntimeReservePortResponse `json:"data"`
+	}
+	if err := json.NewDecoder(resp.Body).Decode(&res); err != nil {
+		return nil, err
+	}
+	if res.Code != 0 {
+		return nil, fmt.Errorf("remote api error: %s", res.Msg)
+	}
+
+	return &res.Data, nil
+}
+
+func (c *FederationClient) ApplyRole(url, token, localDomain string, reqData RuntimeApplyRoleRequest) (*RuntimeApplyRoleResponse, error) {
+	url = strings.TrimSuffix(url, "/")
+	bodyBytes, _ := json.Marshal(reqData)
+	req, err := http.NewRequest("POST", url+"/api/v1/federation/runtime/apply-role", strings.NewReader(string(bodyBytes)))
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("Authorization", "Bearer "+token)
+	if localDomain != "" {
+		req.Header.Set("X-Panel-Domain", localDomain)
+	}
+	req.Header.Set("Content-Type", "application/json")
+
+	resp, err := c.client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != 200 {
+		body, _ := io.ReadAll(resp.Body)
+		return nil, fmt.Errorf("remote error %d: %s", resp.StatusCode, string(body))
+	}
+
+	var res struct {
+		Code int                      `json:"code"`
+		Msg  string                   `json:"msg"`
+		Data RuntimeApplyRoleResponse `json:"data"`
+	}
+	if err := json.NewDecoder(resp.Body).Decode(&res); err != nil {
+		return nil, err
+	}
+	if res.Code != 0 {
+		return nil, fmt.Errorf("remote api error: %s", res.Msg)
+	}
+
+	return &res.Data, nil
+}
+
+func (c *FederationClient) ReleaseRole(url, token, localDomain string, reqData RuntimeReleaseRoleRequest) error {
+	url = strings.TrimSuffix(url, "/")
+	bodyBytes, _ := json.Marshal(reqData)
+	req, err := http.NewRequest("POST", url+"/api/v1/federation/runtime/release-role", strings.NewReader(string(bodyBytes)))
+	if err != nil {
+		return err
+	}
+	req.Header.Set("Authorization", "Bearer "+token)
+	if localDomain != "" {
+		req.Header.Set("X-Panel-Domain", localDomain)
+	}
+	req.Header.Set("Content-Type", "application/json")
+
+	resp, err := c.client.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != 200 {
+		body, _ := io.ReadAll(resp.Body)
+		return fmt.Errorf("remote error %d: %s", resp.StatusCode, string(body))
+	}
+
+	var res struct {
+		Code int    `json:"code"`
+		Msg  string `json:"msg"`
+	}
+	if err := json.NewDecoder(resp.Body).Decode(&res); err != nil {
+		return err
+	}
+	if res.Code != 0 {
+		return fmt.Errorf("remote api error: %s", res.Msg)
+	}
+
+	return nil
+}
+
+func (c *FederationClient) Diagnose(url, token, localDomain string, reqData RuntimeDiagnoseRequest) (map[string]interface{}, error) {
+	url = strings.TrimSuffix(url, "/")
+	bodyBytes, _ := json.Marshal(reqData)
+	req, err := http.NewRequest("POST", url+"/api/v1/federation/runtime/diagnose", strings.NewReader(string(bodyBytes)))
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("Authorization", "Bearer "+token)
+	if localDomain != "" {
+		req.Header.Set("X-Panel-Domain", localDomain)
+	}
+	req.Header.Set("Content-Type", "application/json")
+
+	resp, err := c.client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != 200 {
+		body, _ := io.ReadAll(resp.Body)
+		return nil, fmt.Errorf("remote error %d: %s", resp.StatusCode, string(body))
+	}
+
+	var res struct {
+		Code int                    `json:"code"`
+		Msg  string                 `json:"msg"`
+		Data map[string]interface{} `json:"data"`
+	}
+	if err := json.NewDecoder(resp.Body).Decode(&res); err != nil {
+		return nil, err
+	}
+	if res.Code != 0 {
+		return nil, fmt.Errorf("remote api error: %s", res.Msg)
+	}
+
+	if res.Data == nil {
+		return nil, fmt.Errorf("remote api error: empty diagnosis payload")
+	}
+
+	return res.Data, nil
+}
+
+func (c *FederationClient) Command(url, token, localDomain string, reqData RuntimeNodeCommandRequest) (*RuntimeNodeCommandResponse, error) {
+	url = strings.TrimSuffix(url, "/")
+	bodyBytes, _ := json.Marshal(reqData)
+	req, err := http.NewRequest("POST", url+"/api/v1/federation/runtime/command", strings.NewReader(string(bodyBytes)))
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("Authorization", "Bearer "+token)
+	if localDomain != "" {
+		req.Header.Set("X-Panel-Domain", localDomain)
+	}
+	req.Header.Set("Content-Type", "application/json")
+
+	resp, err := c.client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != 200 {
+		body, _ := io.ReadAll(resp.Body)
+		return nil, fmt.Errorf("remote error %d: %s", resp.StatusCode, string(body))
+	}
+
+	var res struct {
+		Code int                        `json:"code"`
+		Msg  string                     `json:"msg"`
+		Data RuntimeNodeCommandResponse `json:"data"`
+	}
+	if err := json.NewDecoder(resp.Body).Decode(&res); err != nil {
+		return nil, err
+	}
+	if res.Code != 0 {
+		return nil, fmt.Errorf("remote api error: %s", res.Msg)
+	}
+
+	return &res.Data, nil
+}

go-backend/internal/http/handler/AGENTS.md

@@ -0,0 +1,49 @@
+# BACKEND HTTP HANDLER KNOWLEDGE BASE
+
+**Generated:** Fri Mar 20 2026
+**Commit:** f45f960
+**Branch:** main
+**Tag:** 2.1.9-beta6
+
+## OVERVIEW
+HTTP request handlers for FLVX Admin API. Core business logic layer.
+**Stack:** Go 1.24, net/http, GORM via Repository pattern.
+
+## STRUCTURE
+```
+handler/
+├── handler.go        # Main Handler struct, login/captcha, job scheduling
+├── control_plane.go  # Node control plane API (add/delete/list)
+├── federation.go     # Federation/cluster sync API
+├── flow_policy.go    # Traffic policy API
+├── jobs.go           # Background job management (sync, cleanup)
+├── mutations.go      # CRUD for users, tunnels, forwards (~3700 LOC)
+└── upgrade.go        # System upgrade API
+```
+
+## WHERE TO LOOK
+| Task | Location | Notes |
+|------|----------|-------|
+| **User/Tunnel CRUD** | `mutations.go` | Largest file; all create/update/delete ops |
+| **Login/Captcha** | `handler.go` | Login flow, captcha verification |
+| **Federation Sync** | `federation.go` | Panel-to-panel sync |
+| **Traffic Policies** | `flow_policy.go` | Flow limiting, quota management |
+| **Background Jobs** | `jobs.go` | Scheduled sync/cleanup tasks |
+| **Node Control** | `control_plane.go` | Node add/delete/list operations |
+
+## CONVENTIONS
+- Inherits from parent: GORM via Repository pattern, JWT in Authorization header.
+- Large files expected (`mutations.go` ~3700 LOC - central mutation hub).
+- Uses `repo.Repository` for DB access via `h.repo.XXX()` methods.
+- Handlers never call `repo.DB()` directly — all queries go through Repository methods.
+- Domain-driven file split: one file per functional area (federation, jobs, etc.).
+
+## ANTI-PATTERNS
+- Do NOT let handlers call `repo.DB()` directly — add a Repository method instead.
+- Do NOT change handler signatures without updating router.go.
+
+## COMMANDS
+```bash
+cd go-backend
+go test ./internal/http/handler/...
+```

go-backend/internal/http/handler/control_plane_test.go

@@ -0,0 +1,544 @@
+package handler
+
+import (
+	"errors"
+	"reflect"
+	"testing"
+
+	"go-backend/internal/store/repo"
+)
+
+func TestBuildForwardControlServiceNamesPauseResume(t *testing.T) {
+	base := "12_34_56"
+	want := []string{base + "_tcp", base + "_udp"}
+
+	for _, command := range []string{"PauseService", "ResumeService"} {
+		got := buildForwardControlServiceNames(base, command)
+		if !reflect.DeepEqual(got, want) {
+			t.Fatalf("command %s expected %v, got %v", command, want, got)
+		}
+	}
+}
+
+func TestBuildForwardControlServiceNamesDelete(t *testing.T) {
+	base := "12_34_56"
+	want := []string{base, base + "_tcp", base + "_udp"}
+	got := buildForwardControlServiceNames(base, " DeleteService ")
+	if !reflect.DeepEqual(got, want) {
+		t.Fatalf("expected %v, got %v", want, got)
+	}
+}
+
+func TestBuildForwardServiceBaseCandidates(t *testing.T) {
+	got := buildForwardServiceBaseCandidates(12, 34, 56, []int64{56, 78, 90})
+	want := []string{"12_34_56", "12_34_78", "12_34_90", "12_34_0"}
+	if !reflect.DeepEqual(got, want) {
+		t.Fatalf("expected %v, got %v", want, got)
+	}
+}
+
+func TestBuildForwardServiceBaseCandidatesWithZeroPreferred(t *testing.T) {
+	got := buildForwardServiceBaseCandidates(12, 34, 0, []int64{78, 0, 90})
+	want := []string{"12_34_0", "12_34_78", "12_34_90"}
+	if !reflect.DeepEqual(got, want) {
+		t.Fatalf("expected %v, got %v", want, got)
+	}
+}
+
+func TestBuildForwardServiceBaseWithResolvedUserTunnel(t *testing.T) {
+	got := buildForwardServiceBaseWithResolvedUserTunnel(12, 34, 56)
+	if got != "12_34_56" {
+		t.Fatalf("expected 12_34_56, got %s", got)
+	}
+}
+
+func TestBuildForwardServiceBaseWithResolvedUserTunnelFallbackToZero(t *testing.T) {
+	got := buildForwardServiceBaseWithResolvedUserTunnel(12, 34, 0)
+	if got != "12_34_0" {
+		t.Fatalf("expected 12_34_0, got %s", got)
+	}
+}
+
+func TestShouldTryLegacySingleService(t *testing.T) {
+	if !shouldTryLegacySingleService("PauseService") {
+		t.Fatalf("PauseService should require legacy fallback")
+	}
+	if !shouldTryLegacySingleService("resumeService") {
+		t.Fatalf("ResumeService should require legacy fallback")
+	}
+	if shouldTryLegacySingleService("DeleteService") {
+		t.Fatalf("DeleteService should not require legacy fallback")
+	}
+}
+
+func TestShouldSelfHealForwardServiceControl(t *testing.T) {
+	if !shouldSelfHealForwardServiceControl("PauseService") {
+		t.Fatalf("PauseService should trigger self-heal")
+	}
+	if !shouldSelfHealForwardServiceControl(" resumeService ") {
+		t.Fatalf("ResumeService should trigger self-heal")
+	}
+	if shouldSelfHealForwardServiceControl("DeleteService") {
+		t.Fatalf("DeleteService should not trigger self-heal")
+	}
+}
+
+func TestControlForwardServiceCommandHandledOnKnownVariant(t *testing.T) {
+	bases := []string{"12_34_56"}
+	called := make([]string, 0)
+	handled, lastNotFoundErr, err := controlForwardServiceCommand(bases, "PauseService", func(name string) error {
+		called = append(called, name)
+		if name == "12_34_56_udp" {
+			return nil
+		}
+		return errors.New("service " + name + " not found")
+	})
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if !handled {
+		t.Fatalf("expected handled=true")
+	}
+	if lastNotFoundErr != nil {
+		t.Fatalf("expected lastNotFoundErr=nil when handled")
+	}
+	wantCalls := []string{"12_34_56_tcp", "12_34_56_udp", "12_34_56"}
+	if !reflect.DeepEqual(called, wantCalls) {
+		t.Fatalf("expected calls %v, got %v", wantCalls, called)
+	}
+}
+
+func TestControlForwardServiceCommandReturnsLastNotFoundWhenAllMissing(t *testing.T) {
+	bases := []string{"12_34_56"}
+	handled, lastNotFoundErr, err := controlForwardServiceCommand(bases, "PauseService", func(name string) error {
+		return errors.New("service " + name + " not found")
+	})
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if handled {
+		t.Fatalf("expected handled=false")
+	}
+	if lastNotFoundErr == nil {
+		t.Fatalf("expected lastNotFoundErr when all variants are missing")
+	}
+}
+
+func TestDeleteForwardServiceCandidatesSkipsNotFoundUntilLegacyMatch(t *testing.T) {
+	bases := []string{"12_34_56", "12_34_0"}
+	called := make([]string, 0)
+	err := deleteForwardServiceCandidates(bases, func(name string) error {
+		called = append(called, name)
+		if name == "12_34_0" {
+			return nil
+		}
+		return errors.New("service " + name + " not found")
+	})
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	wantCalls := []string{"12_34_56_tcp", "12_34_56_udp", "12_34_56", "12_34_0_tcp", "12_34_0_udp", "12_34_0"}
+	if !reflect.DeepEqual(called, wantCalls) {
+		t.Fatalf("expected calls %v, got %v", wantCalls, called)
+	}
+}
+
+func TestDeleteForwardServiceCandidatesTreatsAllMissingAsSuccess(t *testing.T) {
+	bases := []string{"12_34_56", "12_34_0"}
+	err := deleteForwardServiceCandidates(bases, func(name string) error {
+		return errors.New("service " + name + " not found")
+	})
+	if err != nil {
+		t.Fatalf("all-missing delete should be tolerated, got %v", err)
+	}
+}
+
+func TestForwardServiceBaseCandidatesIncludesResolvedAndLegacyZero(t *testing.T) {
+	bases := buildForwardServiceBaseCandidates(46, 9, 123, []int64{123, 77, 0})
+	want := []string{"46_9_123", "46_9_77", "46_9_0"}
+	if !reflect.DeepEqual(bases, want) {
+		t.Fatalf("expected %v, got %v", want, bases)
+	}
+}
+
+func TestDeleteForwardServiceBasesOnNodeRetriesLegacyZeroResidue(t *testing.T) {
+	bases := []string{"46_9_123", "46_9_0"}
+	called := make([]string, 0)
+	err := deleteForwardServiceCandidates(bases, func(name string) error {
+		called = append(called, name)
+		if name == "46_9_0_tcp" || name == "46_9_0_udp" {
+			return nil
+		}
+		return errors.New("service " + name + " not found")
+	})
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	want := []string{"46_9_123_tcp", "46_9_123_udp", "46_9_123", "46_9_0_tcp", "46_9_0_udp", "46_9_0"}
+	if !reflect.DeepEqual(called, want) {
+		t.Fatalf("expected calls %v, got %v", want, called)
+	}
+}
+
+func TestDeleteForwardServiceCandidatesDeletesAllMatchingVariants(t *testing.T) {
+	bases := []string{"57_7_7", "57_7_0"}
+	called := make([]string, 0)
+	err := deleteForwardServiceCandidates(bases, func(name string) error {
+		called = append(called, name)
+		switch name {
+		case "57_7_7_tcp", "57_7_7_udp", "57_7_0_tcp", "57_7_0_udp":
+			return nil
+		default:
+			return errors.New("service " + name + " not found")
+		}
+	})
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	want := []string{"57_7_7_tcp", "57_7_7_udp", "57_7_7", "57_7_0_tcp", "57_7_0_udp", "57_7_0"}
+	if !reflect.DeepEqual(called, want) {
+		t.Fatalf("expected calls %v, got %v", want, called)
+	}
+}
+
+func TestValidateForwardPortAvailabilityRejectsOtherForwardOccupancy(t *testing.T) {
+	h := &Handler{repo: nil}
+	node := &nodeRecord{ID: 9, Name: "test-node"}
+	_ = h
+	_ = node
+
+	rawRepo, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	h = &Handler{repo: rawRepo}
+	if err := rawRepo.DB().Exec(`INSERT INTO forward_port(forward_id, node_id, port) VALUES(1, 9, 2000)`).Error; err != nil {
+		t.Fatalf("insert forward port: %v", err)
+	}
+
+	err = h.validateForwardPortAvailability(&nodeRecord{ID: 9, Name: "test-node"}, 2000, 2)
+	if err == nil {
+		t.Fatalf("expected occupancy error")
+	}
+	if err.Error() != "节点 test-node 端口 2000 已被其他转发占用" {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	err = h.validateForwardPortAvailability(&nodeRecord{ID: 9, Name: "test-node"}, 2000, 1)
+	if err != nil {
+		t.Fatalf("same forward should be allowed, got %v", err)
+	}
+}
+
+func TestControlForwardServiceCommandReturnsHardError(t *testing.T) {
+	bases := []string{"12_34_56"}
+	handled, lastNotFoundErr, err := controlForwardServiceCommand(bases, "PauseService", func(name string) error {
+		if name == "12_34_56_tcp" {
+			return errors.New("network timeout")
+		}
+		return nil
+	})
+	if err == nil {
+		t.Fatalf("expected hard error")
+	}
+	if handled {
+		t.Fatalf("expected handled=false on hard error")
+	}
+	if lastNotFoundErr != nil {
+		t.Fatalf("did not expect not-found error alongside hard error")
+	}
+}
+
+func TestIsAlreadyExistsMessage(t *testing.T) {
+	if !isAlreadyExistsMessage("service demo already exists") {
+		t.Fatalf("expected already exists message to be tolerated")
+	}
+	if !isAlreadyExistsMessage("服务已存在") {
+		t.Fatalf("expected Chinese already exists message to be tolerated")
+	}
+	if !isAlreadyExistsMessage("service demo alreadyexists") {
+		t.Fatalf("missing-space alreadyexists should be tolerated")
+	}
+	if isAlreadyExistsMessage("listen tcp [::]:10001: bind: address already in use") {
+		t.Fatalf("address already in use must not be treated as already exists")
+	}
+	if isAlreadyExistsMessage("create service 57_7_7_tcp failed: listen tcp4 0.0.0.0:46222: bind: address alreadyin use") {
+		t.Fatalf("alreadyin-use variant must not be treated as already exists")
+	}
+}
+
+func TestIsBindAddressInUseError(t *testing.T) {
+	if !isBindAddressInUseError(errors.New("listen tcp [::]:10001: bind: address already in use")) {
+		t.Fatalf("address already in use should be detected")
+	}
+	if !isBindAddressInUseError(errors.New("listen tcp4 13.228.170.187:16765: bind: cannot assign requested address")) {
+		t.Fatalf("cannot assign requested address should be detected")
+	}
+	if isBindAddressInUseError(errors.New("service demo already exists")) {
+		t.Fatalf("already exists should not be treated as bind conflict")
+	}
+	if isBindAddressInUseError(nil) {
+		t.Fatalf("nil error should not be treated as bind conflict")
+	}
+}
+
+func TestIsAddressAlreadyInUseError(t *testing.T) {
+	if !isAddressAlreadyInUseError(errors.New("listen tcp [::]:10001: bind: address already in use")) {
+		t.Fatalf("address already in use should be detected")
+	}
+	if !isAddressAlreadyInUseError(errors.New("create service 57_7_7_tcp failed: listen tcp4 0.0.0.0:46222: bind: address alreadyin use")) {
+		t.Fatalf("missing-space alreadyin-use variant should be detected")
+	}
+	if isAddressAlreadyInUseError(errors.New("listen tcp4 13.228.170.187:16765: bind: cannot assign requested address")) {
+		t.Fatalf("cannot assign requested address should not be treated as address-in-use")
+	}
+}
+
+func TestIsCannotAssignRequestedAddressError(t *testing.T) {
+	if !isCannotAssignRequestedAddressError(errors.New("listen tcp4 13.228.170.187:16765: bind: cannot assign requested address")) {
+		t.Fatalf("cannot assign requested address should be detected")
+	}
+	if !isCannotAssignRequestedAddressError(errors.New("listen tcp4 13.228.170.187:16765: bind: cannotassignrequestedaddress")) {
+		t.Fatalf("missing-space cannotassignrequestedaddress variant should be detected")
+	}
+	if isCannotAssignRequestedAddressError(errors.New("listen tcp [::]:10001: bind: address already in use")) {
+		t.Fatalf("address already in use should not be treated as cannot-assign")
+	}
+}
+
+func TestRetryTunnelServiceAddWithCleanupRetriesOnAddressInUse(t *testing.T) {
+	addCalls := 0
+	cleanupCalls := 0
+	err := retryTunnelServiceAddWithCleanup(
+		func() error {
+			addCalls++
+			if addCalls == 1 {
+				return errors.New("listen tcp 10.0.0.1:32000: bind: address already in use")
+			}
+			return nil
+		},
+		func() error {
+			cleanupCalls++
+			return nil
+		},
+		0,
+	)
+	if err != nil {
+		t.Fatalf("expected retry to succeed, got %v", err)
+	}
+	if addCalls != 2 {
+		t.Fatalf("expected 2 add attempts, got %d", addCalls)
+	}
+	if cleanupCalls != 1 {
+		t.Fatalf("expected 1 cleanup attempt, got %d", cleanupCalls)
+	}
+}
+
+func TestRetryTunnelServiceAddWithCleanupSkipsCleanupOnNonBindError(t *testing.T) {
+	addCalls := 0
+	cleanupCalls := 0
+	err := retryTunnelServiceAddWithCleanup(
+		func() error {
+			addCalls++
+			return errors.New("network timeout")
+		},
+		func() error {
+			cleanupCalls++
+			return nil
+		},
+		0,
+	)
+	if err == nil {
+		t.Fatalf("expected hard error")
+	}
+	if addCalls != 1 {
+		t.Fatalf("expected 1 add attempt, got %d", addCalls)
+	}
+	if cleanupCalls != 0 {
+		t.Fatalf("expected 0 cleanup attempts, got %d", cleanupCalls)
+	}
+}
+
+func TestRetryTunnelServiceAddWithCleanupReturnsCleanupError(t *testing.T) {
+	cleanupErr := errors.New("delete failed")
+	err := retryTunnelServiceAddWithCleanup(
+		func() error {
+			return errors.New("listen tcp 10.0.0.1:32000: bind: address already in use")
+		},
+		func() error {
+			return cleanupErr
+		},
+		0,
+	)
+	if !errors.Is(err, cleanupErr) {
+		t.Fatalf("expected cleanup error %v, got %v", cleanupErr, err)
+	}
+}
+
+func TestBuildForwardServiceConfigs_UsesBindIPForListen(t *testing.T) {
+	forward := &forwardRecord{RemoteAddr: "1.2.3.4:80", Strategy: "fifo", TunnelID: 7}
+	node := &nodeRecord{TCPListenAddr: "[::]", UDPListenAddr: "[::]"}
+	services := buildForwardServiceConfigs("1_2_0", forward, nil, node, 22000, "10.9.8.7", nil, false)
+	if len(services) != 2 {
+		t.Fatalf("expected 2 services, got %d", len(services))
+	}
+	for _, svc := range services {
+		addr, _ := svc["addr"].(string)
+		if addr != "10.9.8.7:22000" {
+			t.Fatalf("expected bind IP address 10.9.8.7:22000, got %q", addr)
+		}
+	}
+}
+
+func TestBuildForwardServiceConfigs_DefaultListenAddrWhenBindIPEmpty(t *testing.T) {
+	forward := &forwardRecord{RemoteAddr: "1.2.3.4:80", Strategy: "fifo", TunnelID: 7}
+	node := &nodeRecord{TCPListenAddr: "0.0.0.0", UDPListenAddr: "[::]"}
+	services := buildForwardServiceConfigs("1_2_0", forward, nil, node, 22001, "", nil, false)
+	if len(services) != 2 {
+		t.Fatalf("expected 2 services, got %d", len(services))
+	}
+	tcpAddr, _ := services[0]["addr"].(string)
+	udpAddr, _ := services[1]["addr"].(string)
+	if tcpAddr != "0.0.0.0:22001" {
+		t.Fatalf("expected tcp addr 0.0.0.0:22001, got %q", tcpAddr)
+	}
+	if udpAddr != "[::]:22001" {
+		t.Fatalf("expected udp addr [::]:22001, got %q", udpAddr)
+	}
+}
+func TestBuildForwardServiceConfigs_BindIPAlreadyContainsPort(t *testing.T) {
+	forward := &forwardRecord{RemoteAddr: "1.2.3.4:80", Strategy: "fifo", TunnelID: 7}
+	node := &nodeRecord{TCPListenAddr: "[::]", UDPListenAddr: "[::]"}
+	services := buildForwardServiceConfigs("1_2_0", forward, nil, node, 55555, "3.3.3.3:12345", nil, false)
+	if len(services) != 2 {
+		t.Fatalf("expected 2 services, got %d", len(services))
+	}
+	for _, svc := range services {
+		addr, _ := svc["addr"].(string)
+		if addr != "3.3.3.3:12345" {
+			t.Fatalf("expected bind IP with port 3.3.3.3:12345, got %q", addr)
+		}
+	}
+}
+
+func TestBuildForwardServiceConfigs_IPv6BindIP(t *testing.T) {
+	tests := []struct {
+		name     string
+		bindIP   string
+		port     int
+		wantAddr string
+	}{
+		{
+			name:     "pure ipv6 without port",
+			bindIP:   "2001:db8::1",
+			port:     22000,
+			wantAddr: "[2001:db8::1]:22000",
+		},
+		{
+			name:     "bracketed ipv6 without port",
+			bindIP:   "[2001:db8::2]",
+			port:     22001,
+			wantAddr: "[2001:db8::2]:22001",
+		},
+		{
+			name:     "bracketed ipv6 with port",
+			bindIP:   "[2001:db8::3]:8080",
+			port:     55555,
+			wantAddr: "[2001:db8::3]:8080",
+		},
+		{
+			name:     "ipv6 link-local with zone",
+			bindIP:   "fe80::1%eth0",
+			port:     22002,
+			wantAddr: "[fe80::1%eth0]:22002",
+		},
+		{
+			name:     "ipv6 localhost",
+			bindIP:   "::1",
+			port:     22003,
+			wantAddr: "[::1]:22003",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			forward := &forwardRecord{RemoteAddr: "1.2.3.4:80", Strategy: "fifo", TunnelID: 7}
+			node := &nodeRecord{TCPListenAddr: "[::]", UDPListenAddr: "[::]"}
+			services := buildForwardServiceConfigs("1_2_0", forward, nil, node, tt.port, tt.bindIP, nil, false)
+			if len(services) != 2 {
+				t.Fatalf("expected 2 services, got %d", len(services))
+			}
+			for _, svc := range services {
+				addr, _ := svc["addr"].(string)
+				if addr != tt.wantAddr {
+					t.Fatalf("expected addr %q, got %q", tt.wantAddr, addr)
+				}
+			}
+		})
+	}
+}
+
+func TestProcessServerAddress_StripsURLSchemeAndPath(t *testing.T) {
+	tests := []struct {
+		name string
+		in   string
+		want string
+	}{
+		{
+			name: "https with path",
+			in:   "https://panel.example.com:8443/api/v1",
+			want: "panel.example.com:8443",
+		},
+		{
+			name: "wss with query",
+			in:   "wss://panel.example.com:443/system-info?x=1",
+			want: "panel.example.com:443",
+		},
+		{
+			name: "http without port",
+			in:   "http://panel.example.com",
+			want: "panel.example.com",
+		},
+		{
+			name: "manual host with trailing path",
+			in:   "panel.example.com:8080/path",
+			want: "panel.example.com:8080",
+		},
+	}
+
+	for _, tt := range tests {
+		if got := processServerAddress(tt.in); got != tt.want {
+			t.Fatalf("%s: expected %q, got %q", tt.name, tt.want, got)
+		}
+	}
+}
+
+func TestProcessServerAddress_NormalizesIPv6(t *testing.T) {
+	tests := []struct {
+		name string
+		in   string
+		want string
+	}{
+		{
+			name: "ipv6 host only",
+			in:   "2001:db8::1",
+			want: "[2001:db8::1]",
+		},
+		{
+			name: "ipv6 host and port",
+			in:   "https://[2001:db8::1]:8443/path",
+			want: "[2001:db8::1]:8443",
+		},
+		{
+			name: "already bracketed",
+			in:   "[2001:db8::2]:9000",
+			want: "[2001:db8::2]:9000",
+		},
+	}
+
+	for _, tt := range tests {
+		if got := processServerAddress(tt.in); got != tt.want {
+			t.Fatalf("%s: expected %q, got %q", tt.name, tt.want, got)
+		}
+	}
+}

go-backend/internal/http/handler/db_test_helper_test.go

@@ -0,0 +1,50 @@
+package handler
+
+import (
+	"testing"
+
+	"go-backend/internal/store/repo"
+)
+
+func mustLastInsertID(t *testing.T, r *repo.Repository, label string) int64 {
+	t.Helper()
+	var id int64
+	if err := r.DB().Raw("SELECT last_insert_rowid()").Row().Scan(&id); err != nil {
+		t.Fatalf("read last_insert_rowid for %s: %v", label, err)
+	}
+	if id <= 0 {
+		t.Fatalf("invalid last_insert_rowid for %s: %d", label, id)
+	}
+	return id
+}
+
+func mustQueryInt(t *testing.T, r *repo.Repository, query string, args ...interface{}) int {
+	t.Helper()
+	var v int
+	if err := r.DB().Raw(query, args...).Row().Scan(&v); err != nil {
+		t.Fatalf("query int failed: %v (query=%q)", err, query)
+	}
+	return v
+}
+
+func mustQueryInt64Int64String(t *testing.T, r *repo.Repository, query string, args ...interface{}) (int64, int64, string) {
+	t.Helper()
+	var a int64
+	var b int64
+	var c string
+	if err := r.DB().Raw(query, args...).Row().Scan(&a, &b, &c); err != nil {
+		t.Fatalf("query int64+int64+string failed: %v (query=%q)", err, query)
+	}
+	return a, b, c
+}
+
+func mustQueryInt64Int64Int(t *testing.T, r *repo.Repository, query string, args ...interface{}) (int64, int64, int) {
+	t.Helper()
+	var a int64
+	var b int64
+	var c int
+	if err := r.DB().Raw(query, args...).Row().Scan(&a, &b, &c); err != nil {
+		t.Fatalf("query int64+int64+int failed: %v (query=%q)", err, query)
+	}
+	return a, b, c
+}

go-backend/internal/http/handler/diagnosis_stream.go

@@ -0,0 +1,209 @@
+package handler
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"net/http"
+	"strings"
+	"time"
+
+	"go-backend/internal/http/response"
+)
+
+type diagnosisStreamEvent struct {
+	Type string      `json:"type"`
+	Data interface{} `json:"data,omitempty"`
+	TS   int64       `json:"ts"`
+}
+
+func prepareDiagnosisStreamResponse(w http.ResponseWriter) (http.Flusher, error) {
+	flusher, ok := w.(http.Flusher)
+	if !ok {
+		return nil, errors.New("当前服务不支持流式响应")
+	}
+	w.Header().Set("Content-Type", "application/x-ndjson; charset=utf-8")
+	w.Header().Set("Cache-Control", "no-cache")
+	w.Header().Set("Connection", "keep-alive")
+	w.Header().Set("X-Accel-Buffering", "no")
+	return flusher, nil
+}
+
+func writeDiagnosisStreamEvent(encoder *json.Encoder, flusher http.Flusher, eventType string, data interface{}) error {
+	if encoder == nil || flusher == nil {
+		return errors.New("流式响应写入器未初始化")
+	}
+	event := diagnosisStreamEvent{Type: eventType, Data: data, TS: time.Now().UnixMilli()}
+	if err := encoder.Encode(event); err != nil {
+		return err
+	}
+	flusher.Flush()
+	return nil
+}
+
+func summarizeDiagnosisProgress(results []map[string]interface{}) diagnosisProgress {
+	progress := diagnosisProgress{Total: len(results)}
+	for _, item := range results {
+		progress.Completed++
+		if asBool(item["success"], false) {
+			progress.Success++
+		} else {
+			progress.Failed++
+		}
+	}
+	return progress
+}
+
+func shouldIgnoreDiagnosisStreamError(err error) bool {
+	if err == nil {
+		return false
+	}
+	if errors.Is(err, context.Canceled) {
+		return true
+	}
+	msg := strings.ToLower(strings.TrimSpace(err.Error()))
+	if strings.Contains(msg, "broken pipe") || strings.Contains(msg, "connection reset by peer") {
+		return true
+	}
+	if strings.Contains(msg, "stream already closed") {
+		return true
+	}
+	return false
+}
+
+func (h *Handler) streamDiagnosisRuntime(ctx context.Context, cancel context.CancelFunc, w http.ResponseWriter, startPayload map[string]interface{}, workItems []diagnosisWorkItem) error {
+	flusher, err := prepareDiagnosisStreamResponse(w)
+	if err != nil {
+		return err
+	}
+	encoder := json.NewEncoder(w)
+
+	payload := map[string]interface{}{
+		"total":     len(workItems),
+		"timestamp": time.Now().UnixMilli(),
+		"items":     h.buildDiagnosisStreamStartItems(workItems),
+	}
+	for key, value := range startPayload {
+		payload[key] = value
+	}
+	if err := writeDiagnosisStreamEvent(encoder, flusher, "start", payload); err != nil {
+		return err
+	}
+
+	streamBroken := false
+	emitter := func(index int, item map[string]interface{}, progress diagnosisProgress) {
+		if streamBroken {
+			return
+		}
+		itemPayload := map[string]interface{}{
+			"index":    index,
+			"result":   item,
+			"progress": progress,
+		}
+		if err := writeDiagnosisStreamEvent(encoder, flusher, "item", itemPayload); err != nil {
+			streamBroken = true
+			if cancel != nil {
+				cancel()
+			}
+		}
+	}
+
+	results := h.runDiagnosisWorkItems(ctx, workItems, emitter)
+	if streamBroken {
+		return context.Canceled
+	}
+
+	progress := summarizeDiagnosisProgress(results)
+	donePayload := map[string]interface{}{
+		"progress": progress,
+		"timedOut": errors.Is(ctx.Err(), context.DeadlineExceeded),
+	}
+	return writeDiagnosisStreamEvent(encoder, flusher, "done", donePayload)
+}
+
+func (h *Handler) tunnelDiagnoseStream(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	id := asInt64FromBodyKey(r, w, "tunnelId")
+	if id <= 0 {
+		return
+	}
+
+	tunnelName, tunnelType, workItems, err := h.prepareTunnelDiagnosis(id)
+	if err != nil {
+		if strings.Contains(err.Error(), "不存在") || strings.Contains(err.Error(), "不完整") {
+			response.WriteJSON(w, response.ErrDefault(err.Error()))
+			return
+		}
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	ctx, cancel := context.WithTimeout(r.Context(), diagnosisRequestTimeout)
+	defer cancel()
+
+	startPayload := map[string]interface{}{
+		"tunnelName": tunnelName,
+		"tunnelType": tunnelType,
+	}
+	if err := h.streamDiagnosisRuntime(ctx, cancel, w, startPayload, workItems); err != nil {
+		if shouldIgnoreDiagnosisStreamError(err) {
+			return
+		}
+		if strings.Contains(err.Error(), "不支持流式响应") {
+			response.WriteJSON(w, response.ErrDefault(err.Error()))
+			return
+		}
+		return
+	}
+}
+
+func (h *Handler) forwardDiagnoseStream(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	id := asInt64FromBodyKey(r, w, "forwardId")
+	if id <= 0 {
+		return
+	}
+
+	forward, _, _, err := h.resolveForwardAccess(r, id)
+	if err != nil {
+		if errors.Is(err, errForwardNotFound) {
+			response.WriteJSON(w, response.ErrDefault("转发不存在"))
+			return
+		}
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	forwardName, workItems, err := h.prepareForwardDiagnosis(forward)
+	if err != nil {
+		if strings.Contains(err.Error(), "不存在") || strings.Contains(err.Error(), "不能为空") || strings.Contains(err.Error(), "错误") {
+			response.WriteJSON(w, response.ErrDefault(err.Error()))
+			return
+		}
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	ctx, cancel := context.WithTimeout(r.Context(), diagnosisRequestTimeout)
+	defer cancel()
+
+	startPayload := map[string]interface{}{
+		"forwardName": forwardName,
+	}
+	if err := h.streamDiagnosisRuntime(ctx, cancel, w, startPayload, workItems); err != nil {
+		if shouldIgnoreDiagnosisStreamError(err) {
+			return
+		}
+		if strings.Contains(err.Error(), "不支持流式响应") {
+			response.WriteJSON(w, response.ErrDefault(err.Error()))
+			return
+		}
+		return
+	}
+}

go-backend/internal/http/handler/dual_stack_test.go

@@ -0,0 +1,473 @@
+package handler
+
+import (
+	"testing"
+)
+
+// ---------------------------------------------------------------------------
+// nodeSupportsV4 / nodeSupportsV6
+// ---------------------------------------------------------------------------
+
+func TestSelectTunnelDialHost_ConnectIpPriority(t *testing.T) {
+	from := dualStackNode("from", "10.0.0.1", "2001:db8::1")
+	to := dualStackNode("to", "10.0.0.2", "2001:db8::2")
+
+	// Empty connectIp should be ignored, IP preference takes effect
+	host, err := selectTunnelDialHost(from, to, "", "")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if host != "10.0.0.2" {
+		t.Fatalf("empty connectIp should be ignored (v4 preference applies), got %q", host)
+	}
+	// Non-empty connectIp should override IP preference
+	host, err = selectTunnelDialHost(from, to, "v6", "192.168.0.3")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if host != "192.168.0.3" {
+		t.Fatalf("connectIp should override v6 preference, got %q", host)
+	}
+}
+
+func TestBuildTunnelChainServiceConfig_UsesConnectIPForListen(t *testing.T) {
+	node := &nodeRecord{TCPListenAddr: "[::]"}
+	chain := tunnelRuntimeNode{Protocol: "tls", Port: 21000, ConnectIP: "2001:db8::88"}
+	services := buildTunnelChainServiceConfig(99, chain, node, 1)
+	if len(services) != 1 {
+		t.Fatalf("expected 1 service, got %d", len(services))
+	}
+	addr, _ := services[0]["addr"].(string)
+	if addr != "[2001:db8::88]:21000" {
+		t.Fatalf("expected connectIp listen [2001:db8::88]:21000, got %q", addr)
+	}
+}
+
+func TestBuildTunnelChainServiceConfig_FallsBackToNodeListenAddr(t *testing.T) {
+	node := &nodeRecord{TCPListenAddr: "10.8.0.5"}
+	chain := tunnelRuntimeNode{Protocol: "tls", Port: 21002}
+	services := buildTunnelChainServiceConfig(99, chain, node, 1)
+	if len(services) != 1 {
+		t.Fatalf("expected 1 service, got %d", len(services))
+	}
+	addr, _ := services[0]["addr"].(string)
+	if addr != "10.8.0.5:21002" {
+		t.Fatalf("expected node listen addr 10.8.0.5:21002, got %q", addr)
+	}
+}
+
+func TestBuildTunnelChainServiceConfig_DefaultListenAddrWhenConnectIPEmpty(t *testing.T) {
+	node := &nodeRecord{TCPListenAddr: "[::]"}
+	chain := tunnelRuntimeNode{Protocol: "tls", Port: 21001}
+	services := buildTunnelChainServiceConfig(99, chain, node, 1)
+	if len(services) != 1 {
+		t.Fatalf("expected 1 service, got %d", len(services))
+	}
+	addr, _ := services[0]["addr"].(string)
+	if addr != "[::]:21001" {
+		t.Fatalf("expected default listen [::]:21001, got %q", addr)
+	}
+}
+
+func TestBuildTunnelChainServiceConfig_SetsRetriesWhenMultipleCandidates(t *testing.T) {
+	node := &nodeRecord{TCPListenAddr: "[::]"}
+	chain := tunnelRuntimeNode{Protocol: "tls", Port: 21001}
+	services := buildTunnelChainServiceConfig(99, chain, node, 3)
+	if len(services) != 1 {
+		t.Fatalf("expected 1 service, got %d", len(services))
+	}
+	handler, _ := services[0]["handler"].(map[string]interface{})
+	if handler == nil {
+		t.Fatal("expected handler config")
+	}
+	retries, ok := handler["retries"].(int)
+	if !ok {
+		t.Fatal("expected retries to be set when nextHopCandidateCount > 1")
+	}
+	if retries != 2 {
+		t.Fatalf("expected retries=2 (candidates-1), got %d", retries)
+	}
+}
+
+func TestBuildTunnelChainServiceConfig_NoRetriesWhenSingleCandidate(t *testing.T) {
+	node := &nodeRecord{TCPListenAddr: "[::]"}
+	chain := tunnelRuntimeNode{Protocol: "tls", Port: 21001}
+	services := buildTunnelChainServiceConfig(99, chain, node, 1)
+	if len(services) != 1 {
+		t.Fatalf("expected 1 service, got %d", len(services))
+	}
+	handler, _ := services[0]["handler"].(map[string]interface{})
+	if handler == nil {
+		t.Fatal("expected handler config")
+	}
+	if _, hasRetries := handler["retries"]; hasRetries {
+		t.Fatal("expected no retries when nextHopCandidateCount is 1")
+	}
+}
+
+func TestNodeSupportsV6_Nil(t *testing.T) {
+	if nodeSupportsV6(nil) {
+		t.Fatal("nil node must not support v6")
+	}
+}
+
+func TestNodeSupportsV4_ExplicitV4(t *testing.T) {
+	n := &nodeRecord{ServerIPv4: "10.0.0.1"}
+	if !nodeSupportsV4(n) {
+		t.Fatal("explicit server_ip_v4 needs support v4")
+	}
+}
+
+func TestNodeSupportsV6_ExplicitV6(t *testing.T) {
+	n := &nodeRecord{ServerIPv6: "2001:db8::1"}
+	if !nodeSupportsV6(n) {
+		t.Fatal("explicit server_ip_v6 needs support v6")
+	}
+}
+
+func TestNodeSupportsV4_OnlyV6Set(t *testing.T) {
+	n := &nodeRecord{ServerIPv6: "2001:db8::1"}
+	if nodeSupportsV4(n) {
+		t.Fatal("node with only v6 should not support v4")
+	}
+}
+
+func TestNodeSupportsV6_OnlyV4Set(t *testing.T) {
+	n := &nodeRecord{ServerIPv4: "10.0.0.1"}
+	if nodeSupportsV6(n) {
+		t.Fatal("node with only v4 should not support v6")
+	}
+}
+
+func TestNodeSupportsV4_DualStack(t *testing.T) {
+	n := &nodeRecord{ServerIPv4: "10.0.0.1", ServerIPv6: "2001:db8::1"}
+	if !nodeSupportsV4(n) {
+		t.Fatal("dual-stack node must support v4")
+	}
+}
+
+func TestNodeSupportsV6_DualStack(t *testing.T) {
+	n := &nodeRecord{ServerIPv4: "10.0.0.1", ServerIPv6: "2001:db8::1"}
+	if !nodeSupportsV6(n) {
+		t.Fatal("dual-stack node must support v6")
+	}
+}
+
+func TestNodeSupportsV4_LegacyV4Only(t *testing.T) {
+	n := &nodeRecord{ServerIP: "192.168.1.1"}
+	if !nodeSupportsV4(n) {
+		t.Fatal("legacy v4 ip in server_ip must support v4")
+	}
+	if nodeSupportsV6(n) {
+		t.Fatal("legacy v4 ip in server_ip should not support v6")
+	}
+}
+
+func TestNodeSupportsV6_LegacyV6Only(t *testing.T) {
+	n := &nodeRecord{ServerIP: "2001:db8::1"}
+	if !nodeSupportsV6(n) {
+		t.Fatal("legacy v6 ip in server_ip must support v6")
+	}
+	if nodeSupportsV4(n) {
+		t.Fatal("legacy v6 ip in server_ip should not support v4")
+	}
+}
+
+func TestNodeSupportsV4_EmptyNode(t *testing.T) {
+	n := &nodeRecord{}
+	if nodeSupportsV4(n) {
+		t.Fatal("empty node must not support v4")
+	}
+	if nodeSupportsV6(n) {
+		t.Fatal("empty node must not support v6")
+	}
+}
+
+func TestNodeSupportsV4_LegacyBracketed(t *testing.T) {
+	n := &nodeRecord{ServerIP: "[::1]"}
+	if nodeSupportsV4(n) {
+		t.Fatal("bracketed ipv6 must not support v4")
+	}
+	if !nodeSupportsV6(n) {
+		t.Fatal("bracketed ipv6 must support v6")
+	}
+}
+
+// ---------------------------------------------------------------------------
+// pickNodeAddressV4 / pickNodeAddressV6
+// ---------------------------------------------------------------------------
+
+func TestPickNodeAddressV4_Nil(t *testing.T) {
+	if pickNodeAddressV4(nil) != "" {
+		t.Fatal("nil node must return empty")
+	}
+}
+
+func TestPickNodeAddressV6_Nil(t *testing.T) {
+	if pickNodeAddressV6(nil) != "" {
+		t.Fatal("nil node must return empty")
+	}
+}
+
+func TestPickNodeAddressV4_PreferExplicit(t *testing.T) {
+	n := &nodeRecord{ServerIPv4: "10.0.0.1", ServerIP: "192.168.0.1"}
+	got := pickNodeAddressV4(n)
+	if got != "10.0.0.1" {
+		t.Fatalf("expected explicit v4 10.0.0.1, got %q", got)
+	}
+}
+
+func TestPickNodeAddressV4_FallbackLegacy(t *testing.T) {
+	n := &nodeRecord{ServerIP: "192.168.0.1"}
+	got := pickNodeAddressV4(n)
+	if got != "192.168.0.1" {
+		t.Fatalf("expected legacy 192.168.0.1, got %q", got)
+	}
+}
+
+func TestPickNodeAddressV6_PreferExplicit(t *testing.T) {
+	n := &nodeRecord{ServerIPv6: "2001:db8::1", ServerIP: "::1"}
+	got := pickNodeAddressV6(n)
+	if got != "2001:db8::1" {
+		t.Fatalf("expected explicit v6 2001:db8::1, got %q", got)
+	}
+}
+
+func TestPickNodeAddressV6_FallbackLegacy(t *testing.T) {
+	n := &nodeRecord{ServerIP: "::1"}
+	got := pickNodeAddressV6(n)
+	if got != "::1" {
+		t.Fatalf("expected legacy ::1, got %q", got)
+	}
+}
+
+// ---------------------------------------------------------------------------
+// selectTunnelDialHost — core IP preference selection logic
+// ---------------------------------------------------------------------------
+
+func dualStackNode(name, v4, v6 string) *nodeRecord {
+	return &nodeRecord{
+		Name:       name,
+		ServerIPv4: v4,
+		ServerIPv6: v6,
+	}
+}
+
+func v4OnlyNode(name, v4 string) *nodeRecord {
+	return &nodeRecord{
+		Name:       name,
+		ServerIPv4: v4,
+	}
+}
+
+func v6OnlyNode(name, v6 string) *nodeRecord {
+	return &nodeRecord{
+		Name:       name,
+		ServerIPv6: v6,
+	}
+}
+
+func TestSelectTunnelDialHost_NilNodes(t *testing.T) {
+	_, err := selectTunnelDialHost(nil, nil, "", "")
+	if err == nil {
+		t.Fatal("expected error for nil nodes")
+	}
+	_, err = selectTunnelDialHost(dualStackNode("a", "1.1.1.1", "::1"), nil, "", "")
+	if err == nil {
+		t.Fatal("expected error for nil toNode")
+	}
+	_, err = selectTunnelDialHost(nil, dualStackNode("b", "1.1.1.1", "::1"), "", "")
+	if err == nil {
+		t.Fatal("expected error for nil fromNode")
+	}
+}
+
+func TestSelectTunnelDialHost_DualStack_DefaultPreference(t *testing.T) {
+	from := dualStackNode("from", "10.0.0.1", "2001:db8::1")
+	to := dualStackNode("to", "10.0.0.2", "2001:db8::2")
+	host, err := selectTunnelDialHost(from, to, "", "")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	// Default prefers v4 when both available
+	if host != "10.0.0.2" {
+		t.Fatalf("default preference should pick v4, got %q", host)
+	}
+}
+
+func TestSelectTunnelDialHost_DualStack_PreferV4(t *testing.T) {
+	from := dualStackNode("from", "10.0.0.1", "2001:db8::1")
+	to := dualStackNode("to", "10.0.0.2", "2001:db8::2")
+	host, err := selectTunnelDialHost(from, to, "v4", "")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if host != "10.0.0.2" {
+		t.Fatalf("v4 preference should pick v4 address, got %q", host)
+	}
+}
+
+func TestSelectTunnelDialHost_DualStack_PreferV6(t *testing.T) {
+	from := dualStackNode("from", "10.0.0.1", "2001:db8::1")
+	to := dualStackNode("to", "10.0.0.2", "2001:db8::2")
+	host, err := selectTunnelDialHost(from, to, "v6", "")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if host != "2001:db8::2" {
+		t.Fatalf("v6 preference should pick v6 address, got %q", host)
+	}
+}
+
+func TestSelectTunnelDialHost_V4Only_PreferV6Fallback(t *testing.T) {
+	from := v4OnlyNode("from", "10.0.0.1")
+	to := v4OnlyNode("to", "10.0.0.2")
+	// User prefers v6, but both nodes are v4-only — should fallback to v4
+	host, err := selectTunnelDialHost(from, to, "v6", "")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if host != "10.0.0.2" {
+		t.Fatalf("v6 preference on v4-only nodes should fallback to v4, got %q", host)
+	}
+}
+
+func TestSelectTunnelDialHost_V6Only_PreferV4Fallback(t *testing.T) {
+	from := v6OnlyNode("from", "2001:db8::1")
+	to := v6OnlyNode("to", "2001:db8::2")
+	// User prefers v4, but both nodes are v6-only — should fallback to v6
+	host, err := selectTunnelDialHost(from, to, "v4", "")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if host != "2001:db8::2" {
+		t.Fatalf("v4 preference on v6-only nodes should fallback to v6, got %q", host)
+	}
+}
+
+func TestSelectTunnelDialHost_CrossVersion_V4ToV6(t *testing.T) {
+	// v4-only -> v6-only: 跨版本支持，应成功返回 v6 地址
+	from := v4OnlyNode("from", "10.0.0.1")
+	to := v6OnlyNode("to", "2001:db8::2")
+	host, err := selectTunnelDialHost(from, to, "", "")
+	if err != nil {
+		t.Fatalf("unexpected error for cross-version (v4-only -> v6-only): %v", err)
+	}
+	if host != "2001:db8::2" {
+		t.Fatalf("expected v6 address for cross-version, got %q", host)
+	}
+}
+
+func TestSelectTunnelDialHost_CrossVersion_V6ToV4(t *testing.T) {
+	// v6-only -> v4-only: 跨版本支持，应成功返回 v4 地址
+	from := v6OnlyNode("from", "2001:db8::1")
+	to := v4OnlyNode("to", "10.0.0.2")
+	host, err := selectTunnelDialHost(from, to, "", "")
+	if err != nil {
+		t.Fatalf("unexpected error for cross-version (v6-only -> v4-only): %v", err)
+	}
+	if host != "10.0.0.2" {
+		t.Fatalf("expected v4 address for cross-version, got %q", host)
+	}
+}
+
+func TestSelectTunnelDialHost_TrulyIncompatible(t *testing.T) {
+	// 真正不兼容：两个节点都没有任何 IP
+	from := &nodeRecord{Name: "empty-from", ServerIPv4: "", ServerIPv6: "", ServerIP: ""}
+	to := &nodeRecord{Name: "empty-to", ServerIPv4: "", ServerIPv6: "", ServerIP: ""}
+	_, err := selectTunnelDialHost(from, to, "", "")
+	if err == nil {
+		t.Fatal("expected error for nodes with no IP addresses")
+	}
+}
+
+func TestSelectTunnelDialHost_WhitespacePreference(t *testing.T) {
+	from := dualStackNode("from", "10.0.0.1", "2001:db8::1")
+	to := dualStackNode("to", "10.0.0.2", "2001:db8::2")
+	// Whitespace should be trimmed, treated as "v6"
+	host, err := selectTunnelDialHost(from, to, "  v6  ", "")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if host != "2001:db8::2" {
+		t.Fatalf("trimmed v6 preference should pick v6 address, got %q", host)
+	}
+}
+
+func TestSelectTunnelDialHost_MixedStack_FromDualToV4(t *testing.T) {
+	from := dualStackNode("from", "10.0.0.1", "2001:db8::1")
+	to := v4OnlyNode("to", "10.0.0.2")
+	// v6 preferred, but target only has v4 — should succeed with v4
+	host, err := selectTunnelDialHost(from, to, "v6", "")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if host != "10.0.0.2" {
+		t.Fatalf("should fallback to v4 when target is v4-only, got %q", host)
+	}
+}
+
+func TestSelectTunnelDialHost_MixedStack_FromDualToV6(t *testing.T) {
+	from := dualStackNode("from", "10.0.0.1", "2001:db8::1")
+	to := v6OnlyNode("to", "2001:db8::2")
+	// v4 preferred, but target only has v6 — should succeed with v6
+	host, err := selectTunnelDialHost(from, to, "v4", "")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if host != "2001:db8::2" {
+		t.Fatalf("should fallback to v6 when target is v6-only, got %q", host)
+	}
+}
+
+func TestSelectTunnelDialHost_MixedStack_FromV4ToDual(t *testing.T) {
+	from := v4OnlyNode("from", "10.0.0.1")
+	to := dualStackNode("to", "10.0.0.2", "2001:db8::2")
+	// v6 preferred, but from only has v4 — should use v4 (from can only reach v4 of target)
+	host, err := selectTunnelDialHost(from, to, "v6", "")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if host != "10.0.0.2" {
+		t.Fatalf("should use v4 when from is v4-only, got %q", host)
+	}
+}
+
+func TestSelectTunnelDialHost_MixedStack_FromV6ToDual(t *testing.T) {
+	from := v6OnlyNode("from", "2001:db8::1")
+	to := dualStackNode("to", "10.0.0.2", "2001:db8::2")
+	// v4 preferred, but from only has v6 — should use v6
+	host, err := selectTunnelDialHost(from, to, "v4", "")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if host != "2001:db8::2" {
+		t.Fatalf("should use v6 when from is v6-only, got %q", host)
+	}
+}
+
+// ---------------------------------------------------------------------------
+// nodeDisplayName
+// ---------------------------------------------------------------------------
+
+func TestNodeDisplayName_Nil(t *testing.T) {
+	got := nodeDisplayName(nil)
+	if got != "node" {
+		t.Fatalf("nil node display name should be 'node', got %q", got)
+	}
+}
+
+func TestNodeDisplayName_Named(t *testing.T) {
+	n := &nodeRecord{ID: 42, Name: "hk-node"}
+	got := nodeDisplayName(n)
+	if got != "hk-node" {
+		t.Fatalf("expected 'hk-node', got %q", got)
+	}
+}
+func TestNodeDisplayName_Unnamed(t *testing.T) {
+	n := &nodeRecord{ID: 42}
+	got := nodeDisplayName(n)
+	if got != "node_42" {
+		t.Fatalf("expected 'node_42', got %q", got)
+	}
+}

go-backend/internal/http/handler/federation_runtime_test.go

@@ -0,0 +1,339 @@
+package handler
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"path/filepath"
+	"testing"
+	"time"
+
+	"go-backend/internal/http/response"
+	"go-backend/internal/store/repo"
+)
+
+func TestPickPeerSharePortUsesRuntimeReservations(t *testing.T) {
+	r, err := repo.Open(filepath.Join(t.TempDir(), "panel.db"))
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	h := &Handler{repo: r}
+	now := time.Now().UnixMilli()
+
+	if err := r.DB().Exec(`INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol) VALUES(?, ?, ?, ?, ?, ?, ?)`, 1, 2, 1, 3000, "round", 1, "tls").Error; err != nil {
+		t.Fatalf("insert chain_tunnel: %v", err)
+	}
+	if err := r.DB().Exec(`INSERT INTO forward_port(forward_id, node_id, port) VALUES(?, ?, ?)`, 1, 1, 3001).Error; err != nil {
+		t.Fatalf("insert forward_port: %v", err)
+	}
+	if err := r.DB().Exec(`
+		INSERT INTO peer_share_runtime(share_id, node_id, reservation_id, resource_key, binding_id, role, chain_name, service_name, protocol, strategy, port, target, applied, status, created_time, updated_time)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, 77, 1, "res-1", "rk-1", "b-1", "exit", "", "fed_svc_1", "tls", "round", 3002, "", 1, 1, now, now).Error; err != nil {
+		t.Fatalf("insert peer_share_runtime: %v", err)
+	}
+
+	share := &repo.PeerShare{
+		ID:             77,
+		NodeID:         1,
+		PortRangeStart: 3000,
+		PortRangeEnd:   3004,
+	}
+
+	port, err := h.pickPeerSharePort(share, 0)
+	if err != nil {
+		t.Fatalf("pick auto port: %v", err)
+	}
+	if port != 3003 {
+		t.Fatalf("expected port 3003, got %d", port)
+	}
+
+	if _, err := h.pickPeerSharePort(share, 3001); err == nil {
+		t.Fatalf("expected requested busy port to fail")
+	}
+}
+
+func TestApplyTunnelRuntimeSkipsRemoteChainAndOutNodes(t *testing.T) {
+	r, err := repo.Open(filepath.Join(t.TempDir(), "rt-skip.db"))
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	h := &Handler{repo: r}
+	now := time.Now().UnixMilli()
+	for _, n := range []struct {
+		id   int64
+		name string
+		ip   string
+	}{
+		{12, "remote-chain", "10.99.0.2"},
+		{13, "remote-out", "10.99.0.3"},
+	} {
+		if err := r.DB().Exec(`
+			INSERT INTO node(id, name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx, is_remote, remote_url, remote_token)
+			VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+		`, n.id, n.name, n.name+"-secret", n.ip, n.ip, "", "40000-40010", "", "v1", 1, 1, 1, now, now, 1, "[::]", "[::]", 0, 1, "http://remote-peer", "remote-token").Error; err != nil {
+			t.Fatalf("insert node %s: %v", n.name, err)
+		}
+	}
+
+	state := &tunnelCreateState{
+		TunnelID: 1,
+		Type:     2,
+		InNodes:  []tunnelRuntimeNode{},
+		ChainHops: [][]tunnelRuntimeNode{
+			{
+				{NodeID: 12, ChainType: 2, Inx: 1, Port: 41000, Protocol: "tls", Strategy: "round"},
+			},
+		},
+		OutNodes: []tunnelRuntimeNode{
+			{NodeID: 13, ChainType: 3, Port: 42000, Protocol: "tls", Strategy: "round"},
+		},
+		Nodes: map[int64]*nodeRecord{
+			12: {ID: 12, Name: "remote-chain", IsRemote: 1, ServerIPv4: "10.99.0.2"},
+			13: {ID: 13, Name: "remote-out", IsRemote: 1, ServerIPv4: "10.99.0.3"},
+		},
+	}
+
+	chains, services, err := h.applyTunnelRuntime(state)
+	if err != nil {
+		t.Fatalf("apply runtime: %v", err)
+	}
+	if len(chains) != 0 {
+		t.Fatalf("expected no local chains for remote-only nodes, got %d", len(chains))
+	}
+	if len(services) != 0 {
+		t.Fatalf("expected no local services for remote-only nodes, got %d", len(services))
+	}
+}
+
+func TestPrepareTunnelCreateStateRemoteAutoPortDefersToFederation(t *testing.T) {
+	r, err := repo.Open(filepath.Join(t.TempDir(), "panel.db"))
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	h := &Handler{repo: r}
+	now := time.Now().UnixMilli()
+
+	insertNode := func(name string, status int, portRange string, isRemote int) int64 {
+		if execErr := r.DB().Exec(`
+			INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx, is_remote, remote_url, remote_token, remote_config)
+			VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+		`, name, name+"-secret", "10.0.0.1", "10.0.0.1", "", portRange, "", "v1", 1, 1, 1, now, now, status, "[::]", "[::]", 0, isRemote, "http://peer", "peer-token", `{"shareId":1}`).Error; execErr != nil {
+			t.Fatalf("insert node %s: %v", name, execErr)
+		}
+		return mustLastInsertID(t, r, name)
+	}
+
+	entryID := insertNode("entry", 1, "31000-31010", 0)
+	remoteOutID := insertNode("remote-out", 1, "30000", 1)
+
+	if err := r.DB().Exec(`INSERT INTO forward_port(forward_id, node_id, port) VALUES(?, ?, ?)`, 1, remoteOutID, 30000).Error; err != nil {
+		t.Fatalf("insert forward_port: %v", err)
+	}
+
+	tx := r.DB().Begin()
+	if tx.Error != nil {
+		t.Fatalf("begin tx: %v", err)
+	}
+	defer tx.Rollback()
+
+	req := map[string]interface{}{
+		"name": "test-tunnel",
+		"inNodeId": []interface{}{
+			map[string]interface{}{"nodeId": float64(entryID), "protocol": "tls", "strategy": "round"},
+		},
+		"outNodeId": []interface{}{
+			map[string]interface{}{"nodeId": float64(remoteOutID), "protocol": "tls", "strategy": "round", "port": float64(0)},
+		},
+		"chainNodes": []interface{}{},
+	}
+
+	state, err := h.prepareTunnelCreateState(tx, req, 2, 0)
+	if err != nil {
+		t.Fatalf("prepare state should not fail for remote auto-port: %v", err)
+	}
+	if len(state.OutNodes) != 1 {
+		t.Fatalf("expected 1 out node, got %d", len(state.OutNodes))
+	}
+	if state.OutNodes[0].Port != 0 {
+		t.Fatalf("expected remote out port to remain 0 before federation reserve, got %d", state.OutNodes[0].Port)
+	}
+}
+
+func TestPrepareTunnelCreateStateAllowsOfflineRemoteMiddleNode(t *testing.T) {
+	r, err := repo.Open(filepath.Join(t.TempDir(), "panel.db"))
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	h := &Handler{repo: r}
+	now := time.Now().UnixMilli()
+
+	insertNode := func(name string, status int, portRange string, isRemote int) int64 {
+		if execErr := r.DB().Exec(`
+			INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx, is_remote, remote_url, remote_token, remote_config)
+			VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+		`, name, name+"-secret", "10.0.0.1", "10.0.0.1", "", portRange, "", "v1", 1, 1, 1, now, now, status, "[::]", "[::]", 0, isRemote, "http://peer", "peer-token", `{"shareId":2}`).Error; execErr != nil {
+			t.Fatalf("insert node %s: %v", name, execErr)
+		}
+		return mustLastInsertID(t, r, name)
+	}
+
+	entryID := insertNode("entry-local", 1, "32000-32010", 0)
+	remoteMiddleID := insertNode("middle-remote", 0, "33000-33010", 1)
+	outID := insertNode("out-local", 1, "34000-34010", 0)
+
+	tx := r.DB().Begin()
+	if tx.Error != nil {
+		t.Fatalf("begin tx: %v", err)
+	}
+	defer tx.Rollback()
+
+	req := map[string]interface{}{
+		"name": "remote-middle-offline-status",
+		"inNodeId": []interface{}{
+			map[string]interface{}{"nodeId": float64(entryID), "protocol": "tls", "strategy": "round"},
+		},
+		"chainNodes": []interface{}{
+			[]interface{}{
+				map[string]interface{}{"nodeId": float64(remoteMiddleID), "protocol": "tls", "strategy": "round", "port": float64(0)},
+			},
+		},
+		"outNodeId": []interface{}{
+			map[string]interface{}{"nodeId": float64(outID), "protocol": "tls", "strategy": "round", "port": float64(0)},
+		},
+	}
+
+	state, err := h.prepareTunnelCreateState(tx, req, 2, 0)
+	if err != nil {
+		t.Fatalf("prepare state should allow offline remote middle node: %v", err)
+	}
+	if len(state.ChainHops) != 1 || len(state.ChainHops[0]) != 1 {
+		t.Fatalf("expected one middle hop node, got %+v", state.ChainHops)
+	}
+	if state.ChainHops[0][0].NodeID != remoteMiddleID {
+		t.Fatalf("expected remote middle node id %d, got %d", remoteMiddleID, state.ChainHops[0][0].NodeID)
+	}
+	if state.Nodes[remoteMiddleID] == nil || state.Nodes[remoteMiddleID].IsRemote != 1 {
+		t.Fatalf("expected remote middle node metadata in state")
+	}
+}
+
+func TestBuildFederationServiceConfig_MiddleRoleWithMultipleTargets_SetsRetries(t *testing.T) {
+	service := buildFederationServiceConfig("svc-middle", ":40000", "tls", "middle", "chain-next", 3, "")
+	handler := service["handler"].(map[string]interface{})
+	if handler["chain"] != "chain-next" {
+		t.Fatalf("expected chain 'chain-next', got %v", handler["chain"])
+	}
+	if handler["retries"] != 2 {
+		t.Fatalf("expected retries 2 for 3 targets, got %v", handler["retries"])
+	}
+}
+
+func TestBuildFederationServiceConfig_MiddleRoleWithSingleTarget_NoRetries(t *testing.T) {
+	service := buildFederationServiceConfig("svc-middle", ":40000", "tls", "middle", "chain-next", 1, "")
+	handler := service["handler"].(map[string]interface{})
+	if handler["chain"] != "chain-next" {
+		t.Fatalf("expected chain 'chain-next', got %v", handler["chain"])
+	}
+	if _, hasRetries := handler["retries"]; hasRetries {
+		t.Fatalf("expected no retries for single target, got %v", handler["retries"])
+	}
+}
+
+func TestBuildFederationServiceConfig_ExitRole_NoRetriesRegardlessOfTargets(t *testing.T) {
+	service := buildFederationServiceConfig("svc-exit", ":40000", "tls", "exit", "", 3, "eth0")
+	handler := service["handler"].(map[string]interface{})
+	if _, hasChain := handler["chain"]; hasChain {
+		t.Fatalf("expected no chain for exit role, got %v", handler["chain"])
+	}
+	if _, hasRetries := handler["retries"]; hasRetries {
+		t.Fatalf("expected no retries for exit role, got %v", handler["retries"])
+	}
+	metadata := service["metadata"].(map[string]interface{})
+	if metadata["interface"] != "eth0" {
+		t.Fatalf("expected interface 'eth0', got %v", metadata["interface"])
+	}
+}
+
+func TestBuildFederationServiceConfig_TLSTunnelProtocol_SetsNodelay(t *testing.T) {
+	service := buildFederationServiceConfig("svc-tls", ":40000", "tls", "middle", "chain-next", 2, "")
+	handler := service["handler"].(map[string]interface{})
+	meta := handler["metadata"].(map[string]interface{})
+	if meta["nodelay"] != true {
+		t.Fatalf("expected nodelay=true for TLS protocol, got %v", meta["nodelay"])
+	}
+}
+
+func TestBuildFederationServiceConfig_NonTLSProtocol_NoNodelay(t *testing.T) {
+	service := buildFederationServiceConfig("svc-tcp", ":40000", "tcp", "middle", "chain-next", 2, "")
+	handler := service["handler"].(map[string]interface{})
+	if _, hasMeta := handler["metadata"]; hasMeta {
+		t.Fatalf("expected no metadata for non-TLS protocol, got %v", handler["metadata"])
+	}
+}
+
+func TestFederationRuntimeReservePortRejectsWhenShareFlowExceeded(t *testing.T) {
+	r, err := repo.Open(filepath.Join(t.TempDir(), "panel.db"))
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	h := &Handler{repo: r}
+	now := time.Now().UnixMilli()
+
+	if err := r.CreatePeerShare(&repo.PeerShare{
+		Name:           "limited-share",
+		NodeID:         1,
+		Token:          "limited-token",
+		MaxBandwidth:   2048,
+		CurrentFlow:    2048,
+		PortRangeStart: 30000,
+		PortRangeEnd:   30010,
+		IsActive:       1,
+		CreatedTime:    now,
+		UpdatedTime:    now,
+	}); err != nil {
+		t.Fatalf("create share: %v", err)
+	}
+
+	body, err := json.Marshal(map[string]interface{}{
+		"resourceKey":   "tunnel:1:node:1:type:3:hop:0",
+		"protocol":      "tls",
+		"requestedPort": 0,
+	})
+	if err != nil {
+		t.Fatalf("marshal request: %v", err)
+	}
+
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/federation/runtime/reserve-port", bytes.NewReader(body))
+	req.Header.Set("Authorization", "Bearer limited-token")
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+
+	h.federationRuntimeReservePort(res, req)
+
+	if res.Code != http.StatusOK {
+		t.Fatalf("expected status %d, got %d", http.StatusOK, res.Code)
+	}
+
+	var payload response.R
+	if err := json.NewDecoder(res.Body).Decode(&payload); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if payload.Code != 403 {
+		t.Fatalf("expected response code 403, got %d (%s)", payload.Code, payload.Msg)
+	}
+	if payload.Msg != "Share traffic limit exceeded" {
+		t.Fatalf("unexpected response message: %q", payload.Msg)
+	}
+}

go-backend/internal/http/handler/flow_policy.go

@@ -0,0 +1,641 @@
+package handler
+
+import (
+	"encoding/json"
+	"errors"
+	"log"
+	"strconv"
+	"strings"
+	"time"
+
+	"go-backend/internal/store/model"
+)
+
+const bytesPerGB int64 = 1024 * 1024 * 1024
+
+type userTunnelPolicy struct {
+	ID       int64
+	UserID   int64
+	TunnelID int64
+	Flow     int64
+	InFlow   int64
+	OutFlow  int64
+	ExpTime  int64
+	Status   int
+	Num      int
+}
+
+type gostConfigSnapshot struct {
+	Services []namedConfigItem `json:"services"`
+	Chains   []namedConfigItem `json:"chains"`
+	Limiters []namedConfigItem `json:"limiters"`
+}
+
+type namedConfigItem struct {
+	Name string `json:"name"`
+}
+
+func (h *Handler) processFlowItem(nodeID int64, item flowItem) {
+	serviceName := strings.TrimSpace(item.N)
+	if serviceName == "" || serviceName == "web_api" {
+		return
+	}
+
+	forwardID, userID, userTunnelID, ok := parseFlowServiceIDs(serviceName)
+	if ok {
+		inFlow, outFlow := h.scaleFlowByTunnel(forwardID, item.D, item.U)
+		_ = h.repo.AddFlow(forwardID, userID, userTunnelID, inFlow, outFlow)
+		if quota, quotaErr := h.repo.AddUserQuotaUsage(userID, inFlow+outFlow, time.Now()); quotaErr == nil {
+			h.enforceUserQuotaIfNeeded(userID, quota)
+		}
+		h.processPeerShareFlowFromForward(forwardID, nodeID, serviceName, item)
+
+		if userTunnelID > 0 {
+			h.enforceFlowPolicies(userID, userTunnelID)
+		}
+		return
+	}
+
+	runtimeID, ok := parsePeerShareRuntimeServiceID(serviceName)
+	if !ok {
+		return
+	}
+	h.processPeerShareFlow(runtimeID, item)
+}
+
+func parseFlowServiceIDs(serviceName string) (int64, int64, int64, bool) {
+	parts := strings.Split(serviceName, "_")
+	if len(parts) < 3 {
+		return 0, 0, 0, false
+	}
+
+	forwardID, err1 := strconv.ParseInt(parts[0], 10, 64)
+	userID, err2 := strconv.ParseInt(parts[1], 10, 64)
+	userTunnelID, err3 := strconv.ParseInt(parts[2], 10, 64)
+	if err1 != nil || err2 != nil || err3 != nil || forwardID <= 0 || userID <= 0 {
+		return 0, 0, 0, false
+	}
+
+	return forwardID, userID, userTunnelID, true
+}
+
+func parsePeerShareRuntimeServiceID(serviceName string) (int64, bool) {
+	const prefix = "fed_svc_"
+	if !strings.HasPrefix(serviceName, prefix) {
+		return 0, false
+	}
+	raw := strings.TrimPrefix(serviceName, prefix)
+	if raw == "" {
+		return 0, false
+	}
+	parts := strings.SplitN(raw, "_", 2)
+	runtimeID, err := strconv.ParseInt(parts[0], 10, 64)
+	if err != nil || runtimeID <= 0 {
+		return 0, false
+	}
+	return runtimeID, true
+}
+
+func parsePeerShareInfoFromFederationTunnelName(tunnelName string) (int64, int, bool) {
+	tunnelName = strings.TrimSpace(tunnelName)
+	if !strings.HasPrefix(tunnelName, "Share-") {
+		return 0, 0, false
+	}
+	raw := strings.TrimPrefix(tunnelName, "Share-")
+	idx := strings.Index(raw, "-Port-")
+	if idx <= 0 {
+		return 0, 0, false
+	}
+	shareID, err := strconv.ParseInt(raw[:idx], 10, 64)
+	if err != nil || shareID <= 0 {
+		return 0, 0, false
+	}
+	portValue := strings.TrimSpace(raw[idx+len("-Port-"):])
+	port, err := strconv.Atoi(portValue)
+	if err != nil || port <= 0 {
+		return 0, 0, false
+	}
+	return shareID, port, true
+}
+
+func parsePeerShareIDFromFederationTunnelName(tunnelName string) (int64, bool) {
+	tunnelName = strings.TrimSpace(tunnelName)
+	if !strings.HasPrefix(tunnelName, "Share-") {
+		return 0, false
+	}
+	raw := strings.TrimPrefix(tunnelName, "Share-")
+	idx := strings.Index(raw, "-Port-")
+	if idx <= 0 {
+		return 0, false
+	}
+	shareID, err := strconv.ParseInt(raw[:idx], 10, 64)
+	if err != nil || shareID <= 0 {
+		return 0, false
+	}
+	return shareID, true
+}
+
+func (h *Handler) processPeerShareFlow(runtimeID int64, item flowItem) {
+	if h == nil || h.repo == nil || runtimeID <= 0 {
+		return
+	}
+	runtime, err := h.repo.GetPeerShareRuntimeByID(runtimeID)
+	if err != nil || runtime == nil || runtime.ShareID <= 0 || runtime.Status != 1 {
+		return
+	}
+
+	delta := item.D + item.U
+	if delta <= 0 {
+		return
+	}
+
+	_ = h.repo.AddPeerShareCurrentFlow(runtime.ShareID, delta)
+
+	share, err := h.repo.GetPeerShare(runtime.ShareID)
+	if err != nil || share == nil {
+		return
+	}
+	if !isPeerShareFlowExceeded(share) {
+		return
+	}
+	h.enforcePeerShareFlowLimit(share.ID)
+}
+
+func (h *Handler) processPeerShareFlowFromForward(forwardID int64, nodeID int64, serviceName string, item flowItem) {
+	if h == nil || h.repo == nil || forwardID <= 0 {
+		return
+	}
+
+	delta := item.D + item.U
+	if delta <= 0 {
+		return
+	}
+
+	forward, err := h.getForwardRecord(forwardID)
+	if err != nil || forward == nil {
+		// Forward not found in local database - might be a federation port-forward
+		// Try to find by service name in peer_share_runtime
+		h.processPeerShareFlowByServiceName(nodeID, serviceName, item)
+		return
+	}
+	tunnelName, err := h.repo.GetTunnelName(forward.TunnelID)
+	if err != nil {
+		h.processPeerShareFlowByServiceName(nodeID, serviceName, item)
+		return
+	}
+	shareID, ok := parsePeerShareIDFromFederationTunnelName(tunnelName)
+	if !ok {
+		h.processPeerShareFlowByServiceName(nodeID, serviceName, item)
+		return
+	}
+
+	if err := h.repo.AddPeerShareCurrentFlow(shareID, delta); err != nil {
+		h.processPeerShareFlowByServiceName(nodeID, serviceName, item)
+		return
+	}
+
+	share, err := h.repo.GetPeerShare(shareID)
+	if err != nil || share == nil {
+		return
+	}
+	if !isPeerShareFlowExceeded(share) {
+		return
+	}
+	h.enforcePeerShareFlowLimit(share.ID)
+}
+
+func normalizeForwardRuntimeServiceName(serviceName string) string {
+	name := strings.TrimSpace(serviceName)
+	if strings.HasSuffix(name, "_tcp") {
+		return strings.TrimSuffix(name, "_tcp")
+	}
+	if strings.HasSuffix(name, "_udp") {
+		return strings.TrimSuffix(name, "_udp")
+	}
+	return name
+}
+
+func (h *Handler) processPeerShareFlowByServiceName(nodeID int64, serviceName string, item flowItem) {
+	if h == nil || h.repo == nil || strings.TrimSpace(serviceName) == "" {
+		return
+	}
+
+	delta := item.D + item.U
+	if delta <= 0 {
+		return
+	}
+
+	normalized := normalizeForwardRuntimeServiceName(serviceName)
+	var runtimes []model.PeerShareRuntime
+	var err error
+
+	// Try node-scoped query first if nodeID is valid
+	if nodeID > 0 {
+		runtimes, err = h.repo.ListActiveForwardPeerShareRuntimesByNodeAndServiceName(nodeID, normalized)
+		if err != nil {
+			return
+		}
+		if len(runtimes) == 0 && normalized != serviceName {
+			runtimes, err = h.repo.ListActiveForwardPeerShareRuntimesByNodeAndServiceName(nodeID, serviceName)
+			if err != nil {
+				return
+			}
+		}
+	}
+
+	// Fallback to global query if node-scoped query returned nothing or nodeID is invalid
+	if len(runtimes) == 0 {
+		runtimes, err = h.repo.ListActiveForwardPeerShareRuntimesByServiceName(normalized)
+		if err != nil {
+			return
+		}
+		if len(runtimes) == 0 && normalized != serviceName {
+			runtimes, err = h.repo.ListActiveForwardPeerShareRuntimesByServiceName(serviceName)
+			if err != nil {
+				return
+			}
+		}
+	}
+
+	if len(runtimes) != 1 {
+		if len(runtimes) > 1 {
+			log.Printf("WARN: ambiguous peer share runtime match for service=%s nodeID=%d count=%d", serviceName, nodeID, len(runtimes))
+		}
+		return
+	}
+	runtime := runtimes[0]
+
+	_ = h.repo.AddPeerShareCurrentFlow(runtime.ShareID, delta)
+
+	matchedShare, err := h.repo.GetPeerShare(runtime.ShareID)
+	if err != nil || matchedShare == nil {
+		return
+	}
+	if isPeerShareFlowExceeded(matchedShare) {
+		h.enforcePeerShareFlowLimit(matchedShare.ID)
+	}
+}
+
+func (h *Handler) enforcePeerShareFlowLimit(shareID int64) {
+	if h == nil || h.repo == nil || shareID <= 0 {
+		return
+	}
+	runtimes, err := h.repo.ListActivePeerShareRuntimesByShareID(shareID)
+	if err != nil || len(runtimes) == 0 {
+		return
+	}
+
+	now := time.Now().UnixMilli()
+	for _, runtime := range runtimes {
+		if h.wsServer != nil && runtime.Applied == 1 {
+			if strings.TrimSpace(runtime.ServiceName) != "" {
+				_, _ = h.sendNodeCommand(runtime.NodeID, "DeleteService", map[string]interface{}{"services": []string{runtime.ServiceName}}, false, true)
+			}
+			if strings.TrimSpace(runtime.Role) == "middle" && strings.TrimSpace(runtime.ChainName) != "" {
+				_, _ = h.sendNodeCommand(runtime.NodeID, "DeleteChains", map[string]interface{}{"chain": runtime.ChainName}, false, true)
+			}
+		}
+		_ = h.repo.MarkPeerShareRuntimeReleased(runtime.ID, now)
+	}
+}
+
+func (h *Handler) scaleFlowByTunnel(forwardID int64, inFlow int64, outFlow int64) (int64, int64) {
+	forward, err := h.getForwardRecord(forwardID)
+	if err != nil || forward == nil {
+		return inFlow, outFlow
+	}
+
+	tunnel, err := h.getTunnelRecord(forward.TunnelID)
+	if err != nil || tunnel == nil {
+		return inFlow, outFlow
+	}
+
+	scaledIn := int64(float64(inFlow)*tunnel.TrafficRatio) * tunnel.Flow
+	scaledOut := int64(float64(outFlow)*tunnel.TrafficRatio) * tunnel.Flow
+	return scaledIn, scaledOut
+}
+
+func (h *Handler) enforceFlowPolicies(userID int64, userTunnelID int64) {
+	now := time.Now().UnixMilli()
+
+	if h.shouldPauseUser(userID, now) {
+		h.pauseUserForwards(userID, now)
+	}
+
+	policy, err := h.getUserTunnelPolicy(userTunnelID)
+	if err != nil || policy == nil {
+		return
+	}
+
+	if shouldPauseUserTunnel(policy, now) {
+		h.pauseUserTunnelForwards(policy.UserID, policy.TunnelID, now)
+	}
+}
+
+func (h *Handler) ensureUserTunnelForwardAllowed(userID int64, tunnelID int64, now int64) error {
+	if h == nil || h.repo == nil {
+		return errors.New("invalid flow policy context")
+	}
+	if userID <= 0 || tunnelID <= 0 {
+		return nil
+	}
+
+	user, err := h.repo.GetUserByID(userID)
+	if err != nil {
+		return err
+	}
+	if user == nil {
+		return errors.New("用户不存在")
+	}
+
+	if user.Status != 1 {
+		return errors.New("账号已禁用")
+	}
+	if user.ExpTime > 0 && user.ExpTime <= now {
+		return errors.New("账号已过期")
+	}
+
+	flowLimit := user.Flow * bytesPerGB
+	current := user.InFlow + user.OutFlow
+	if flowLimit < current {
+		return errors.New("流量已超额，禁止开启转发")
+	}
+	if err := h.ensureUserForwardAllowedByQuota(userID, now); err != nil {
+		return err
+	}
+
+	if user.Num > 0 {
+		currentForwardCount, err := h.repo.CountActiveForwardsByUser(userID)
+		if err != nil {
+			return err
+		}
+		if currentForwardCount >= int64(user.Num) {
+			return errors.New("转发数量已达上限")
+		}
+	}
+
+	userTunnelID, _, _, err := h.resolveUserTunnelAndLimiter(userID, tunnelID)
+	if err != nil {
+		return err
+	}
+	if userTunnelID <= 0 {
+		return nil
+	}
+
+	policy, err := h.getUserTunnelPolicy(userTunnelID)
+	if err != nil {
+		return err
+	}
+	if policy == nil {
+		return nil
+	}
+
+	if policy.Status != 1 {
+		return errors.New("该隧道已禁用")
+	}
+	if policy.ExpTime > 0 && policy.ExpTime <= now {
+		return errors.New("该隧道已过期")
+	}
+
+	utFlowLimit := policy.Flow * bytesPerGB
+	utCurrent := policy.InFlow + policy.OutFlow
+	if utCurrent >= utFlowLimit {
+		return errors.New("该隧道流量已超额，禁止开启转发")
+	}
+
+	if policy.Num > 0 {
+		currentTunnelForwardCount, err := h.repo.CountActiveForwardsByUserTunnel(userID, tunnelID)
+		if err != nil {
+			return err
+		}
+		if currentTunnelForwardCount >= int64(policy.Num) {
+			return errors.New("该隧道转发数量已达上限")
+		}
+	}
+
+	return nil
+}
+
+func (h *Handler) shouldPauseUser(userID int64, now int64) bool {
+	user, err := h.repo.GetUserByID(userID)
+	if err != nil || user == nil {
+		return false
+	}
+
+	flowLimit := user.Flow * bytesPerGB
+	current := user.InFlow + user.OutFlow
+	if flowLimit < current {
+		return true
+	}
+	if user.ExpTime > 0 && user.ExpTime <= now {
+		return true
+	}
+	return user.Status != 1
+}
+
+func shouldPauseUserTunnel(policy *userTunnelPolicy, now int64) bool {
+	if policy == nil {
+		return false
+	}
+
+	flowLimit := policy.Flow * bytesPerGB
+	current := policy.InFlow + policy.OutFlow
+	if current >= flowLimit {
+		return true
+	}
+	if policy.ExpTime > 0 && policy.ExpTime <= now {
+		return true
+	}
+	return policy.Status != 1
+}
+
+func (h *Handler) getUserTunnelPolicy(userTunnelID int64) (*userTunnelPolicy, error) {
+	if userTunnelID <= 0 {
+		return nil, nil
+	}
+	ut, err := h.repo.GetUserTunnelByID(userTunnelID)
+	if err != nil {
+		return nil, err
+	}
+	if ut == nil {
+		return nil, nil
+	}
+	return &userTunnelPolicy{
+		ID: ut.ID, UserID: ut.UserID, TunnelID: ut.TunnelID,
+		Flow: ut.Flow, InFlow: ut.InFlow, OutFlow: ut.OutFlow,
+		ExpTime: ut.ExpTime, Status: ut.Status, Num: ut.Num,
+	}, nil
+}
+
+func (h *Handler) pauseUserForwards(userID int64, now int64) {
+	forwards, err := h.listActiveForwardsByUser(userID)
+	if err != nil {
+		return
+	}
+	h.pauseForwardRecords(forwards, now)
+}
+
+func (h *Handler) pauseUserTunnelForwards(userID int64, tunnelID int64, now int64) {
+	forwards, err := h.listActiveForwardsByUserTunnel(userID, tunnelID)
+	if err != nil {
+		return
+	}
+	h.pauseForwardRecords(forwards, now)
+}
+
+func (h *Handler) pauseForwardRecords(forwards []forwardRecord, now int64) {
+	for i := range forwards {
+		forward := forwards[i]
+		_ = h.controlForwardServices(&forward, "PauseService", false)
+		_ = h.repo.UpdateForwardStatus(forward.ID, 0, now)
+	}
+}
+
+func (h *Handler) listActiveForwardsByUser(userID int64) ([]forwardRecord, error) {
+	return h.repo.ListActiveForwardsByUser(userID)
+}
+
+func (h *Handler) listActiveForwardsByUserTunnel(userID int64, tunnelID int64) ([]forwardRecord, error) {
+	return h.repo.ListActiveForwardsByUserTunnel(userID, tunnelID)
+}
+
+func (h *Handler) cleanNodeConfigs(nodeID int64, rawConfig string) {
+	if h == nil || h.repo == nil || nodeID <= 0 {
+		return
+	}
+	if strings.TrimSpace(rawConfig) == "" {
+		return
+	}
+
+	var snapshot gostConfigSnapshot
+	if err := json.Unmarshal([]byte(rawConfig), &snapshot); err != nil {
+		return
+	}
+
+	h.cleanOrphanedServices(nodeID, snapshot.Services)
+	h.cleanOrphanedChains(nodeID, snapshot.Chains)
+	h.cleanOrphanedLimiters(nodeID, snapshot.Limiters)
+}
+
+func (h *Handler) cleanOrphanedServices(nodeID int64, services []namedConfigItem) {
+	runtimeServiceNames, err := h.repo.ListActiveForwardPeerShareRuntimeServiceNamesByNode(nodeID)
+	if err != nil {
+		return
+	}
+	minUpdatedTime := time.Now().Add(-10 * time.Minute).UnixMilli()
+	hasUnboundForwardPeerRuntime, err := h.repo.HasRecentUnboundForwardPeerShareRuntimeOnNode(nodeID, minUpdatedTime)
+	if err != nil {
+		hasUnboundForwardPeerRuntime = false
+	}
+	runtimeServiceSet := make(map[string]struct{}, len(runtimeServiceNames))
+	for _, serviceName := range runtimeServiceNames {
+		serviceName = strings.TrimSpace(serviceName)
+		if serviceName == "" {
+			continue
+		}
+		runtimeServiceSet[serviceName] = struct{}{}
+	}
+
+	for _, item := range services {
+		name := strings.TrimSpace(item.Name)
+		if name == "" || name == "web_api" {
+			continue
+		}
+		if strings.HasPrefix(name, "fed_svc_") {
+			continue
+		}
+		normalizedName := normalizeForwardRuntimeServiceName(name)
+		if _, ok := runtimeServiceSet[normalizedName]; ok {
+			continue
+		}
+		if _, ok := runtimeServiceSet[name]; ok {
+			continue
+		}
+
+		parts := strings.Split(name, "_")
+		if len(parts) >= 3 {
+			forwardID, err := strconv.ParseInt(parts[0], 10, 64)
+			if err == nil && forwardID > 0 && hasUnboundForwardPeerRuntime {
+				continue
+			}
+			if err == nil && forwardID > 0 && !h.forwardExists(forwardID) {
+				_, _ = h.sendNodeCommand(nodeID, "DeleteService", map[string]interface{}{"services": []string{name, parts[0] + "_" + parts[1] + "_" + parts[2], parts[0] + "_" + parts[1] + "_" + parts[2] + "_tcp", parts[0] + "_" + parts[1] + "_" + parts[2] + "_udp"}}, false, true)
+				continue
+			}
+		}
+		suffix := parts[len(parts)-1]
+
+		switch suffix {
+		case "tls":
+			tunnelID, err := strconv.ParseInt(parts[0], 10, 64)
+			if err != nil || tunnelID <= 0 || h.tunnelExists(tunnelID) {
+				continue
+			}
+			_, _ = h.sendNodeCommand(nodeID, "DeleteService", map[string]interface{}{"services": []string{name}}, false, true)
+		case "tcp":
+			if len(parts) < 4 {
+				continue
+			}
+			forwardID, err := strconv.ParseInt(parts[0], 10, 64)
+			if err == nil && forwardID > 0 && hasUnboundForwardPeerRuntime {
+				continue
+			}
+			if err != nil || forwardID <= 0 || h.forwardExists(forwardID) {
+				continue
+			}
+			base := strings.TrimSuffix(name, "_tcp")
+			_, _ = h.sendNodeCommand(nodeID, "DeleteService", map[string]interface{}{"services": []string{base + "_tcp", base + "_udp"}}, false, true)
+		}
+	}
+}
+
+func (h *Handler) cleanOrphanedChains(nodeID int64, chains []namedConfigItem) {
+	for _, item := range chains {
+		name := strings.TrimSpace(item.Name)
+		if name == "" {
+			continue
+		}
+
+		idx := strings.LastIndex(name, "_")
+		if idx <= 0 || idx >= len(name)-1 {
+			continue
+		}
+		tunnelID, err := strconv.ParseInt(name[idx+1:], 10, 64)
+		if err != nil || tunnelID <= 0 || h.tunnelExists(tunnelID) {
+			continue
+		}
+		_, _ = h.sendNodeCommand(nodeID, "DeleteChains", map[string]interface{}{"chain": name}, false, true)
+	}
+}
+
+func (h *Handler) cleanOrphanedLimiters(nodeID int64, limiters []namedConfigItem) {
+	for _, item := range limiters {
+		name := strings.TrimSpace(item.Name)
+		if name == "" || h.speedLimiterExists(name) {
+			continue
+		}
+		_, _ = h.sendNodeCommand(nodeID, "DeleteLimiters", map[string]interface{}{"limiter": name}, false, true)
+	}
+}
+
+func (h *Handler) tunnelExists(tunnelID int64) bool {
+	ok, _ := h.repo.TunnelExists(tunnelID)
+	return ok
+}
+
+func (h *Handler) forwardExists(forwardID int64) bool {
+	ok, _ := h.repo.ForwardExists(forwardID)
+	return ok
+}
+
+func (h *Handler) speedLimiterExists(name string) bool {
+	if name == "" {
+		return false
+	}
+	id, err := strconv.ParseInt(name, 10, 64)
+	if err != nil || id <= 0 {
+		return false
+	}
+	ok, _ := h.repo.SpeedLimitExists(id)
+	return ok
+}

go-backend/internal/http/handler/flow_policy_federation_test.go

@@ -0,0 +1,406 @@
+package handler
+
+import (
+	"path/filepath"
+	"strconv"
+	"testing"
+	"time"
+
+	"go-backend/internal/store/repo"
+)
+
+func TestProcessFlowItemTracksPeerShareFlowAndEnforcesLimit(t *testing.T) {
+	r, err := repo.Open(filepath.Join(t.TempDir(), "panel.db"))
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	now := time.Now().UnixMilli()
+	if err := r.CreatePeerShare(&repo.PeerShare{
+		Name:           "flow-share",
+		NodeID:         1,
+		Token:          "flow-share-token",
+		MaxBandwidth:   3000,
+		CurrentFlow:    1000,
+		PortRangeStart: 32000,
+		PortRangeEnd:   32010,
+		IsActive:       1,
+		CreatedTime:    now,
+		UpdatedTime:    now,
+	}); err != nil {
+		t.Fatalf("create peer share: %v", err)
+	}
+	share, err := r.GetPeerShareByToken("flow-share-token")
+	if err != nil || share == nil {
+		t.Fatalf("load peer share: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO peer_share_runtime(id, share_id, node_id, reservation_id, resource_key, binding_id, role, chain_name, service_name, protocol, strategy, port, target, applied, status, created_time, updated_time)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, 17, share.ID, share.NodeID, "res-17", "rk-17", "17", "exit", "", "fed_svc_17", "tls", "round", 32001, "", 1, 1, now, now).Error; err != nil {
+		t.Fatalf("insert peer_share_runtime: %v", err)
+	}
+
+	h := &Handler{repo: r}
+	h.processFlowItem(1, flowItem{N: "fed_svc_17", U: 1200, D: 900})
+
+	updatedShare, err := r.GetPeerShare(share.ID)
+	if err != nil || updatedShare == nil {
+		t.Fatalf("reload share: %v", err)
+	}
+	if updatedShare.CurrentFlow != 3100 {
+		t.Fatalf("expected current_flow=3100, got %d", updatedShare.CurrentFlow)
+	}
+
+	runtime, err := r.GetPeerShareRuntimeByID(17)
+	if err != nil || runtime == nil {
+		t.Fatalf("reload runtime: %v", err)
+	}
+	if runtime.Status != 0 {
+		t.Fatalf("expected runtime status=0 after limit enforcement, got %d", runtime.Status)
+	}
+}
+
+func TestProcessFlowItemTracksPeerShareFlowForFederationPortForward(t *testing.T) {
+	r, err := repo.Open(filepath.Join(t.TempDir(), "panel-forward.db"))
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	now := time.Now().UnixMilli()
+	if err := r.CreatePeerShare(&repo.PeerShare{
+		Name:           "forward-share",
+		NodeID:         1,
+		Token:          "forward-share-token",
+		MaxBandwidth:   0,
+		CurrentFlow:    0,
+		PortRangeStart: 30000,
+		PortRangeEnd:   30010,
+		IsActive:       1,
+		CreatedTime:    now,
+		UpdatedTime:    now,
+	}); err != nil {
+		t.Fatalf("create peer share: %v", err)
+	}
+	share, err := r.GetPeerShareByToken("forward-share-token")
+	if err != nil || share == nil {
+		t.Fatalf("load peer share: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(2, 'u2', 'x', 1, ?, 99999, 0, 0, 1, 1, ?, ?, 1)
+	`, now+24*60*60*1000, now, now).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+
+	tunnelName := "Share-" + strconv.FormatInt(share.ID, 10) + "-Port-30001"
+	if err := r.DB().Exec(`
+		INSERT INTO tunnel(id, name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(1, ?, 1.0, 1, 'tls', 1, ?, ?, 1, NULL, 0)
+	`, tunnelName, now, now).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(10, 2, 1, NULL, 1, 99999, 0, 0, 1, ?, 1)
+	`, now+24*60*60*1000).Error; err != nil {
+		t.Fatalf("insert user_tunnel: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO forward(id, user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(20, 2, 'u2', 'f20', 1, '1.1.1.1:443', 'fifo', 0, 0, ?, ?, 1, 0)
+	`, now, now).Error; err != nil {
+		t.Fatalf("insert forward: %v", err)
+	}
+
+	h := &Handler{repo: r}
+	h.processFlowItem(1, flowItem{N: "20_2_10", U: 120, D: 80})
+
+	updatedShare, err := r.GetPeerShare(share.ID)
+	if err != nil || updatedShare == nil {
+		t.Fatalf("reload share: %v", err)
+	}
+	if updatedShare.CurrentFlow != 200 {
+		t.Fatalf("expected current_flow=200, got %d", updatedShare.CurrentFlow)
+	}
+}
+
+func TestProcessFlowItemTracksPeerShareFlowByForwardServiceName(t *testing.T) {
+	r, err := repo.Open(filepath.Join(t.TempDir(), "panel-forward-service.db"))
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	now := time.Now().UnixMilli()
+	if err := r.CreatePeerShare(&repo.PeerShare{
+		Name:           "forward-service-share",
+		NodeID:         1,
+		Token:          "forward-service-token",
+		MaxBandwidth:   0,
+		CurrentFlow:    0,
+		PortRangeStart: 31000,
+		PortRangeEnd:   31010,
+		IsActive:       1,
+		CreatedTime:    now,
+		UpdatedTime:    now,
+	}); err != nil {
+		t.Fatalf("create peer share: %v", err)
+	}
+	share, err := r.GetPeerShareByToken("forward-service-token")
+	if err != nil || share == nil {
+		t.Fatalf("load peer share: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO peer_share_runtime(share_id, node_id, reservation_id, resource_key, binding_id, role, chain_name, service_name, protocol, strategy, port, target, applied, status, created_time, updated_time)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, share.ID, share.NodeID, "svc-r1", "svc-rk1", "", "forward", "", "20_2_10", "tcp", "fifo", 31001, "", 1, 1, now, now).Error; err != nil {
+		t.Fatalf("insert peer_share_runtime: %v", err)
+	}
+
+	h := &Handler{repo: r}
+	h.processFlowItem(1, flowItem{N: "20_2_10_tcp", U: 120, D: 80})
+
+	updatedShare, err := r.GetPeerShare(share.ID)
+	if err != nil || updatedShare == nil {
+		t.Fatalf("reload share: %v", err)
+	}
+	if updatedShare.CurrentFlow != 200 {
+		t.Fatalf("expected current_flow=200, got %d", updatedShare.CurrentFlow)
+	}
+}
+
+func TestProcessFlowItemFallsBackToServiceNameWhenForwardIDCollidesAcrossPanels(t *testing.T) {
+	r, err := repo.Open(filepath.Join(t.TempDir(), "panel-forward-collision.db"))
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	now := time.Now().UnixMilli()
+	if err := r.CreatePeerShare(&repo.PeerShare{
+		Name:           "collision-share",
+		NodeID:         1,
+		Token:          "collision-token",
+		MaxBandwidth:   0,
+		CurrentFlow:    0,
+		PortRangeStart: 31400,
+		PortRangeEnd:   31410,
+		IsActive:       1,
+		CreatedTime:    now,
+		UpdatedTime:    now,
+	}); err != nil {
+		t.Fatalf("create peer share: %v", err)
+	}
+	share, err := r.GetPeerShareByToken("collision-token")
+	if err != nil || share == nil {
+		t.Fatalf("load peer share: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO peer_share_runtime(share_id, node_id, reservation_id, resource_key, binding_id, role, chain_name, service_name, protocol, strategy, port, target, applied, status, created_time, updated_time)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, share.ID, share.NodeID, "collision-r1", "collision-rk1", "", "forward", "", "20_2_10", "tcp", "fifo", 31401, "", 1, 1, now, now).Error; err != nil {
+		t.Fatalf("insert peer_share_runtime: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO tunnel(id, name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(2, 'local-tunnel-with-colliding-forward-id', 1.0, 1, 'tls', 1, ?, ?, 1, NULL, 0)
+	`, now, now).Error; err != nil {
+		t.Fatalf("insert local tunnel: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO forward(id, user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(20, 1, 'local-user', 'local-f20', 2, '8.8.8.8:53', 'fifo', 0, 0, ?, ?, 1, 0)
+	`, now, now).Error; err != nil {
+		t.Fatalf("insert local forward: %v", err)
+	}
+
+	h := &Handler{repo: r}
+	h.processFlowItem(1, flowItem{N: "20_2_10_tcp", U: 120, D: 80})
+
+	updatedShare, err := r.GetPeerShare(share.ID)
+	if err != nil || updatedShare == nil {
+		t.Fatalf("reload share: %v", err)
+	}
+	if updatedShare.CurrentFlow != 200 {
+		t.Fatalf("expected current_flow=200, got %d", updatedShare.CurrentFlow)
+	}
+}
+
+func TestProcessFlowItemSkipsPeerShareFlowWhenServiceNameIsAmbiguous(t *testing.T) {
+	r, err := repo.Open(filepath.Join(t.TempDir(), "panel-forward-ambiguous.db"))
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	now := time.Now().UnixMilli()
+	if err := r.CreatePeerShare(&repo.PeerShare{
+		Name:           "ambiguous-share-a",
+		NodeID:         1,
+		Token:          "ambiguous-token-a",
+		MaxBandwidth:   0,
+		CurrentFlow:    0,
+		PortRangeStart: 31100,
+		PortRangeEnd:   31110,
+		IsActive:       1,
+		CreatedTime:    now,
+		UpdatedTime:    now,
+	}); err != nil {
+		t.Fatalf("create share A: %v", err)
+	}
+	if err := r.CreatePeerShare(&repo.PeerShare{
+		Name:           "ambiguous-share-b",
+		NodeID:         1,
+		Token:          "ambiguous-token-b",
+		MaxBandwidth:   0,
+		CurrentFlow:    0,
+		PortRangeStart: 31200,
+		PortRangeEnd:   31210,
+		IsActive:       1,
+		CreatedTime:    now,
+		UpdatedTime:    now,
+	}); err != nil {
+		t.Fatalf("create share B: %v", err)
+	}
+	shareA, _ := r.GetPeerShareByToken("ambiguous-token-a")
+	shareB, _ := r.GetPeerShareByToken("ambiguous-token-b")
+
+	if err := r.DB().Exec(`
+		INSERT INTO peer_share_runtime(share_id, node_id, reservation_id, resource_key, binding_id, role, chain_name, service_name, protocol, strategy, port, target, applied, status, created_time, updated_time)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?),
+		      (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`,
+		shareA.ID, 1, "amb-r1", "amb-rk1", "", "forward", "", "99_2_10", "tcp", "fifo", 31101, "", 1, 1, now, now,
+		shareB.ID, 1, "amb-r2", "amb-rk2", "", "forward", "", "99_2_10", "tcp", "fifo", 31201, "", 1, 1, now, now,
+	).Error; err != nil {
+		t.Fatalf("insert ambiguous runtimes: %v", err)
+	}
+
+	h := &Handler{repo: r}
+	h.processFlowItem(1, flowItem{N: "99_2_10_tcp", U: 120, D: 80})
+
+	updatedA, _ := r.GetPeerShare(shareA.ID)
+	updatedB, _ := r.GetPeerShare(shareB.ID)
+	if updatedA.CurrentFlow != 0 || updatedB.CurrentFlow != 0 {
+		t.Fatalf("expected ambiguous service flow to be skipped, got shareA=%d shareB=%d", updatedA.CurrentFlow, updatedB.CurrentFlow)
+	}
+}
+
+func TestCleanOrphanedServicesSkipsActiveSharedForwardRuntimeServices(t *testing.T) {
+	r, err := repo.Open(filepath.Join(t.TempDir(), "panel-cleanup-runtime.db"))
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	now := time.Now().UnixMilli()
+	if err := r.CreatePeerShare(&repo.PeerShare{
+		Name:           "cleanup-runtime-share",
+		NodeID:         1,
+		Token:          "cleanup-runtime-token",
+		MaxBandwidth:   0,
+		CurrentFlow:    0,
+		PortRangeStart: 31300,
+		PortRangeEnd:   31310,
+		IsActive:       1,
+		CreatedTime:    now,
+		UpdatedTime:    now,
+	}); err != nil {
+		t.Fatalf("create peer share: %v", err)
+	}
+	share, err := r.GetPeerShareByToken("cleanup-runtime-token")
+	if err != nil || share == nil {
+		t.Fatalf("load peer share: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO peer_share_runtime(share_id, node_id, reservation_id, resource_key, binding_id, role, chain_name, service_name, protocol, strategy, port, target, applied, status, created_time, updated_time)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, share.ID, share.NodeID, "cleanup-r1", "cleanup-rk1", "", "forward", "", "20_2_10", "tcp", "fifo", 31301, "", 1, 1, now, now).Error; err != nil {
+		t.Fatalf("insert peer_share_runtime: %v", err)
+	}
+
+	h := &Handler{repo: r}
+
+	defer func() {
+		if rec := recover(); rec != nil {
+			t.Fatalf("cleanOrphanedServices should skip active shared runtime service; got panic: %v", rec)
+		}
+	}()
+
+	h.cleanOrphanedServices(share.NodeID, []namedConfigItem{{Name: "20_2_10_tcp"}})
+}
+
+func TestCleanOrphanedServicesSkipsFederationServicePrefix(t *testing.T) {
+	r, err := repo.Open(filepath.Join(t.TempDir(), "panel-cleanup-fed-svc.db"))
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	h := &Handler{repo: r}
+
+	defer func() {
+		if rec := recover(); rec != nil {
+			t.Fatalf("cleanOrphanedServices should skip fed_svc_ service names; got panic: %v", rec)
+		}
+	}()
+
+	h.cleanOrphanedServices(1, []namedConfigItem{{Name: "fed_svc_999_tcp"}})
+}
+
+func TestCleanOrphanedServicesSkipsForwardPatternWhenNodeHasActivePeerShareForwardRuntime(t *testing.T) {
+	r, err := repo.Open(filepath.Join(t.TempDir(), "panel-cleanup-forward-runtime-empty-service.db"))
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	now := time.Now().UnixMilli()
+	if err := r.CreatePeerShare(&repo.PeerShare{
+		Name:           "cleanup-forward-runtime-empty-service",
+		NodeID:         1,
+		Token:          "cleanup-forward-runtime-empty-service-token",
+		MaxBandwidth:   0,
+		CurrentFlow:    0,
+		PortRangeStart: 31420,
+		PortRangeEnd:   31430,
+		IsActive:       1,
+		CreatedTime:    now,
+		UpdatedTime:    now,
+	}); err != nil {
+		t.Fatalf("create peer share: %v", err)
+	}
+	share, err := r.GetPeerShareByToken("cleanup-forward-runtime-empty-service-token")
+	if err != nil || share == nil {
+		t.Fatalf("load peer share: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO peer_share_runtime(share_id, node_id, reservation_id, resource_key, binding_id, role, chain_name, service_name, protocol, strategy, port, target, applied, status, created_time, updated_time)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, share.ID, share.NodeID, "cleanup-forward-empty-r1", "cleanup-forward-empty-rk1", "", "forward", "", "", "tcp", "fifo", 31421, "", 0, 1, now, now).Error; err != nil {
+		t.Fatalf("insert peer_share_runtime with empty service name: %v", err)
+	}
+
+	h := &Handler{repo: r}
+
+	defer func() {
+		if rec := recover(); rec != nil {
+			t.Fatalf("cleanOrphanedServices should skip forward-pattern services when active peer-share forward runtime exists; got panic: %v", rec)
+		}
+	}()
+
+	h.cleanOrphanedServices(share.NodeID, []namedConfigItem{{Name: "20_2_10_tcp"}})
+}

go-backend/internal/http/handler/jobs.go

@@ -0,0 +1,242 @@
+package handler
+
+import (
+	"context"
+	"time"
+)
+
+func (h *Handler) StartBackgroundJobs() {
+	if h == nil || h.repo == nil {
+		return
+	}
+
+	h.jobsMu.Lock()
+	if h.jobsStarted {
+		h.jobsMu.Unlock()
+		return
+	}
+	ctx, cancel := context.WithCancel(context.Background())
+	h.jobsCancel = cancel
+	h.jobsStarted = true
+	h.jobsWG.Add(6)
+	h.jobsMu.Unlock()
+
+	go h.runHourlyStatsLoop(ctx)
+	go h.runDailyMaintenanceLoop(ctx)
+	go h.runNodeRenewalCycleLoop(ctx)
+	go h.runMetricsIngestion(ctx)
+	go h.runHealthChecks(ctx)
+	go h.runTunnelQualityProber(ctx)
+}
+
+func (h *Handler) StopBackgroundJobs() {
+	if h == nil {
+		return
+	}
+
+	h.jobsMu.Lock()
+	if !h.jobsStarted {
+		h.jobsMu.Unlock()
+		return
+	}
+	cancel := h.jobsCancel
+	h.jobsCancel = nil
+	h.jobsStarted = false
+	h.jobsMu.Unlock()
+
+	if cancel != nil {
+		cancel()
+	}
+	h.jobsWG.Wait()
+}
+
+func (h *Handler) runMetricsIngestion(ctx context.Context) {
+	defer h.jobsWG.Done()
+	if h.metrics != nil {
+		h.metrics.Start(ctx)
+	}
+}
+
+func (h *Handler) runHealthChecks(ctx context.Context) {
+	defer h.jobsWG.Done()
+	if h.healthCheck != nil {
+		h.healthCheck.Start(ctx)
+	}
+}
+
+func (h *Handler) runTunnelQualityProber(ctx context.Context) {
+	defer h.jobsWG.Done()
+	if h == nil || h.qualityProber == nil || !h.isTunnelQualityMonitoringEnabled() {
+		return
+	}
+
+	h.qualityProber.Start(ctx)
+}
+
+func (h *Handler) runHourlyStatsLoop(ctx context.Context) {
+	defer h.jobsWG.Done()
+
+	for {
+		wait := durationUntilNextHour(time.Now())
+		timer := time.NewTimer(wait)
+		select {
+		case <-ctx.Done():
+			if !timer.Stop() {
+				<-timer.C
+			}
+			return
+		case <-timer.C:
+			h.runStatisticsFlowJob(time.Now())
+		}
+	}
+}
+
+func (h *Handler) runDailyMaintenanceLoop(ctx context.Context) {
+	defer h.jobsWG.Done()
+
+	for {
+		wait := durationUntilNextDailyMaintenance(time.Now())
+		timer := time.NewTimer(wait)
+		select {
+		case <-ctx.Done():
+			if !timer.Stop() {
+				<-timer.C
+			}
+			return
+		case <-timer.C:
+			h.runResetAndExpiryJob(time.Now())
+		}
+	}
+}
+
+func durationUntilNextHour(now time.Time) time.Duration {
+	next := now.Truncate(time.Hour).Add(time.Hour)
+	return next.Sub(now)
+}
+
+func durationUntilNextDailyMaintenance(now time.Time) time.Duration {
+	next := time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 5, 0, now.Location())
+	if !next.After(now) {
+		next = next.Add(24 * time.Hour)
+	}
+	return next.Sub(now)
+}
+
+func (h *Handler) runStatisticsFlowJob(now time.Time) {
+	if h == nil || h.repo == nil {
+		return
+	}
+
+	nowMs := now.UnixMilli()
+	cutoffMs := nowMs - int64((48*time.Hour)/time.Millisecond)
+	_ = h.repo.PurgeOldStatisticsFlows(cutoffMs)
+
+	hourMark := now.Truncate(time.Hour)
+	hourText := hourMark.Format("15:04")
+	createdTime := hourMark.UnixMilli()
+
+	users, err := h.repo.ListAllUserFlowSnapshots()
+	if err != nil {
+		return
+	}
+
+	for _, user := range users {
+		currentTotal := user.InFlow + user.OutFlow
+		increment := currentTotal
+
+		lastTotal, err := h.repo.GetLastStatisticsFlowTotal(user.UserID)
+		if err == nil && lastTotal.Valid {
+			increment = currentTotal - lastTotal.Int64
+			if increment < 0 {
+				increment = currentTotal
+			}
+		}
+
+		_ = h.repo.CreateStatisticsFlow(user.UserID, increment, currentTotal, hourText, createdTime)
+	}
+}
+
+func (h *Handler) runResetAndExpiryJob(now time.Time) {
+	if h == nil || h.repo == nil {
+		return
+	}
+
+	h.resetMonthlyFlow(now)
+	h.resetUserQuotaWindows(now)
+	h.disableExpiredUsers(now.UnixMilli())
+	h.disableExpiredUserTunnels(now.UnixMilli())
+}
+
+func (h *Handler) resetMonthlyFlow(now time.Time) {
+	currentDay := now.Day()
+	lastDay := time.Date(now.Year(), now.Month()+1, 0, 0, 0, 0, 0, now.Location()).Day()
+
+	_ = h.repo.ResetUserMonthlyFlow(currentDay, lastDay)
+	_ = h.repo.ResetUserTunnelMonthlyFlow(currentDay, lastDay)
+}
+
+func (h *Handler) disableExpiredUsers(nowMs int64) {
+	userIDs, err := h.repo.ListExpiredActiveUserIDs(nowMs)
+	if err != nil {
+		return
+	}
+
+	for _, userID := range userIDs {
+		forwards, err := h.listActiveForwardsByUser(userID)
+		if err == nil {
+			h.pauseForwardRecords(forwards, nowMs)
+		}
+		_ = h.repo.DisableUser(userID)
+	}
+}
+
+func (h *Handler) disableExpiredUserTunnels(nowMs int64) {
+	items, err := h.repo.ListExpiredActiveUserTunnels(nowMs)
+	if err != nil {
+		return
+	}
+
+	for _, item := range items {
+		forwards, err := h.listActiveForwardsByUserTunnel(item.UserID, item.TunnelID)
+		if err == nil {
+			h.pauseForwardRecords(forwards, nowMs)
+		}
+		_ = h.repo.DisableUserTunnel(item.ID)
+	}
+}
+
+func (h *Handler) runNodeRenewalCycleLoop(ctx context.Context) {
+	defer h.jobsWG.Done()
+
+	for {
+		wait := durationUntilNextNodeRenewalCycle(time.Now())
+		timer := time.NewTimer(wait)
+		select {
+		case <-ctx.Done():
+			if !timer.Stop() {
+				<-timer.C
+			}
+			return
+		case <-timer.C:
+			h.runNodeRenewalCycleJob(time.Now())
+		}
+	}
+}
+
+func durationUntilNextNodeRenewalCycle(now time.Time) time.Duration {
+	next := now.Truncate(6 * time.Hour).Add(6 * time.Hour)
+	return next.Sub(now)
+}
+
+func (h *Handler) runNodeRenewalCycleJob(now time.Time) {
+	if h == nil || h.repo == nil {
+		return
+	}
+
+	advanced, err := h.repo.AdvanceNodeRenewalCycles(now.UnixMilli())
+	if err != nil {
+		return
+	}
+
+	_ = advanced
+}

go-backend/internal/http/handler/jobs_renewal_test.go

@@ -0,0 +1,55 @@
+package handler
+
+import (
+	"database/sql"
+	"testing"
+	"time"
+
+	"go-backend/internal/store/repo"
+)
+
+func TestRunNodeRenewalCycleJob_AdvancesOverdueAnchorTimes(t *testing.T) {
+	dbPath := t.TempDir() + "/renewal-test.db"
+	r, err := repo.Open(dbPath)
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	t.Cleanup(func() {
+		_ = r.Close()
+	})
+
+	now := time.Date(2026, 3, 8, 12, 0, 0, 0, time.UTC)
+	nowMs := now.UnixMilli()
+
+	nodeID := int64(101)
+	err = r.DB().Exec(`
+		INSERT INTO node (id, name, secret, server_ip, port, http, tls, socks, created_time, status, renewal_cycle, expiry_time)
+		VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, nodeID, "no-cycle-node", "test-secret", "192.168.1.1", "1000-65535", 1, 1, 1, nowMs, 1, "", nil).Error
+	if err != nil {
+		t.Fatalf("insert test node: %v", err)
+	}
+
+	quarterNodeID := int64(102)
+	err = r.DB().Exec(`
+		INSERT INTO node (id, name, secret, server_ip, port, http, tls, socks, created_time, status, renewal_cycle, expiry_time)
+		VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, quarterNodeID, "quarter-node", "test-secret", "192.168.1.1", "1000-65535", 1, 1, 1, nowMs, 1, "quarter", now.AddDate(0, -4, 0).UnixMilli()).Error
+	if err != nil {
+		t.Fatalf("insert test node: %v", err)
+	}
+
+	h := &Handler{repo: r}
+	h.runNodeRenewalCycleJob(now)
+
+	var anchor sql.NullInt64
+	err = r.DB().Raw(`SELECT expiry_time FROM node WHERE id = ?`, quarterNodeID).Row().Scan(&anchor)
+	if err != nil {
+		t.Fatalf("query expiry_time: %v", err)
+	}
+
+	expectedAnchor := now.AddDate(0, 2, 0).UnixMilli()
+	if !anchor.Valid || anchor.Int64 != expectedAnchor {
+		t.Fatalf("expected anchor %d (2026-05-08), got %d", expectedAnchor, anchor.Int64)
+	}
+}

go-backend/internal/http/handler/jobs_test.go

@@ -0,0 +1,182 @@
+package handler
+
+import (
+	"path/filepath"
+	"testing"
+	"time"
+
+	"go-backend/internal/store/repo"
+)
+
+func TestRunStatisticsFlowJobTracksIncrementAndPrunes(t *testing.T) {
+	dbPath := filepath.Join(t.TempDir(), "jobs-stats.db")
+	r, err := repo.Open(dbPath)
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	t.Cleanup(func() { _ = r.Close() })
+
+	h := New(r, "secret")
+	now := time.Date(2026, 2, 7, 12, 0, 0, 0, time.UTC)
+	nowMs := now.UnixMilli()
+
+	if err := r.DB().Exec(`UPDATE user SET in_flow = 100, out_flow = 200 WHERE id = 1`).Error; err != nil {
+		t.Fatalf("seed user flow: %v", err)
+	}
+
+	if err := r.DB().Exec(`INSERT INTO statistics_flow(user_id, flow, total_flow, time, created_time) VALUES(1, 250, 250, '11:00', ?)`, now.Add(-time.Hour).UnixMilli()).Error; err != nil {
+		t.Fatalf("seed recent statistics row: %v", err)
+	}
+	if err := r.DB().Exec(`INSERT INTO statistics_flow(user_id, flow, total_flow, time, created_time) VALUES(1, 10, 10, '00:00', ?)`, now.Add(-49*time.Hour).UnixMilli()).Error; err != nil {
+		t.Fatalf("seed stale statistics row: %v", err)
+	}
+
+	h.runStatisticsFlowJob(now)
+
+	staleCount := mustQueryInt(t, r, `SELECT COUNT(1) FROM statistics_flow WHERE created_time < ?`, nowMs-int64((48*time.Hour)/time.Millisecond))
+	if staleCount != 0 {
+		t.Fatalf("expected stale statistics rows to be pruned, got %d", staleCount)
+	}
+
+	flow, total, hour := mustQueryInt64Int64String(t, r, `SELECT flow, total_flow, time FROM statistics_flow WHERE user_id = 1 ORDER BY id DESC LIMIT 1`)
+	if flow != 50 {
+		t.Fatalf("expected increment flow 50, got %d", flow)
+	}
+	if total != 300 {
+		t.Fatalf("expected total flow 300, got %d", total)
+	}
+	if hour != "12:00" {
+		t.Fatalf("expected hour mark 12:00, got %s", hour)
+	}
+}
+
+func TestRunResetAndExpiryJobResetsFlowAndDisablesExpiredRecords(t *testing.T) {
+	dbPath := filepath.Join(t.TempDir(), "jobs-reset.db")
+	r, err := repo.Open(dbPath)
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	t.Cleanup(func() { _ = r.Close() })
+
+	h := New(r, "secret")
+	now := time.Date(2026, 3, 15, 0, 0, 5, 0, time.UTC)
+	nowMs := now.UnixMilli()
+
+	if err := r.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(2, 'expired_user', 'x', 1, ?, 100, 1000, 2000, 15, 1, ?, ?, 1)
+	`, nowMs-1000, nowMs, nowMs).Error; err != nil {
+		t.Fatalf("insert expired user: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(3, 'non_expiring_user', 'x', 1, 0, 100, 1000, 2000, 15, 1, ?, ?, 1)
+	`, nowMs, nowMs).Error; err != nil {
+		t.Fatalf("insert non-expiring user: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO tunnel(id, name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(1, 't1', 1.0, 1, 'tls', 1, ?, ?, 1, NULL, 0)
+	`, nowMs, nowMs).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(10, 2, 1, NULL, 1, 1, 300, 400, 15, ?, 1)
+	`, nowMs-1000).Error; err != nil {
+		t.Fatalf("insert expired user_tunnel: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(11, 3, 1, NULL, 1, 1, 300, 400, 15, 0, 1)
+	`).Error; err != nil {
+		t.Fatalf("insert non-expiring user_tunnel: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO forward(id, user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(20, 2, 'expired_user', 'f1', 1, '1.1.1.1:443', 'fifo', 0, 0, ?, ?, 1, 0)
+	`, nowMs, nowMs).Error; err != nil {
+		t.Fatalf("insert forward: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO forward(id, user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(21, 3, 'non_expiring_user', 'f2', 1, '1.1.1.1:443', 'fifo', 0, 0, ?, ?, 1, 1)
+	`, nowMs, nowMs).Error; err != nil {
+		t.Fatalf("insert non-expiring forward: %v", err)
+	}
+
+	h.runResetAndExpiryJob(now)
+
+	userIn, userOut, userStatus := mustQueryInt64Int64Int(t, r, `SELECT in_flow, out_flow, status FROM user WHERE id = 2`)
+	if userIn != 0 || userOut != 0 || userStatus != 0 {
+		t.Fatalf("expected user reset+disabled, got in=%d out=%d status=%d", userIn, userOut, userStatus)
+	}
+
+	utIn, utOut, utStatus := mustQueryInt64Int64Int(t, r, `SELECT in_flow, out_flow, status FROM user_tunnel WHERE id = 10`)
+	if utIn != 0 || utOut != 0 || utStatus != 0 {
+		t.Fatalf("expected user_tunnel reset+disabled, got in=%d out=%d status=%d", utIn, utOut, utStatus)
+	}
+
+	forwardStatus := mustQueryInt(t, r, `SELECT status FROM forward WHERE id = 20`)
+	if forwardStatus != 0 {
+		t.Fatalf("expected forward status=0 after expiry handling, got %d", forwardStatus)
+	}
+
+	nonExpUserStatus := mustQueryInt(t, r, `SELECT status FROM user WHERE id = 3`)
+	if nonExpUserStatus != 1 {
+		t.Fatalf("expected non-expiring user to remain enabled, got status=%d", nonExpUserStatus)
+	}
+
+	nonExpTunnelStatus := mustQueryInt(t, r, `SELECT status FROM user_tunnel WHERE id = 11`)
+	if nonExpTunnelStatus != 1 {
+		t.Fatalf("expected non-expiring user_tunnel to remain enabled, got status=%d", nonExpTunnelStatus)
+	}
+
+	nonExpForwardStatus := mustQueryInt(t, r, `SELECT status FROM forward WHERE id = 21`)
+	if nonExpForwardStatus != 1 {
+		t.Fatalf("expected non-expiring forward to remain enabled, got status=%d", nonExpForwardStatus)
+	}
+}
+
+func TestRunResetAndExpiryJobResetsUserQuotaAndUnblocksUser(t *testing.T) {
+	dbPath := filepath.Join(t.TempDir(), "jobs-quota-reset.db")
+	r, err := repo.Open(dbPath)
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	t.Cleanup(func() { _ = r.Close() })
+
+	h := New(r, "secret")
+	now := time.Date(2026, 3, 12, 0, 0, 5, 0, time.UTC)
+	nowMs := now.UnixMilli()
+
+	if err := r.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(2, 'quota-reset-user', 'x', 1, 0, 99999, 0, 0, 1, 99999, ?, ?, 1)
+	`, nowMs, nowMs).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+	if err := r.DB().Exec(`
+		INSERT INTO user_quota(user_id, daily_limit_gb, monthly_limit_gb, daily_used_bytes, monthly_used_bytes, day_key, month_key, disabled_by_quota, disabled_at, paused_forward_ids, created_time, updated_time)
+		VALUES(2, 10, 0, ?, ?, 20260311, 202603, 1, ?, '', ?, ?)
+	`, 11*int64(1024*1024*1024), 11*int64(1024*1024*1024), nowMs, nowMs, nowMs).Error; err != nil {
+		t.Fatalf("insert user quota: %v", err)
+	}
+
+	h.runResetAndExpiryJob(now)
+
+	dailyUsed := mustQueryInt(t, r, `SELECT daily_used_bytes FROM user_quota WHERE user_id = 2`)
+	if dailyUsed != 0 {
+		t.Fatalf("expected daily quota usage reset, got %d", dailyUsed)
+	}
+	quotaDisabled := mustQueryInt(t, r, `SELECT disabled_by_quota FROM user_quota WHERE user_id = 2`)
+	if quotaDisabled != 0 {
+		t.Fatalf("expected quota disabled flag cleared, got %d", quotaDisabled)
+	}
+}

go-backend/internal/http/handler/monitoring.go

@@ -0,0 +1,940 @@
+package handler
+
+import (
+	"log"
+	"net/http"
+	"strconv"
+	"strings"
+	"time"
+
+	"go-backend/internal/http/response"
+	"go-backend/internal/monitoring"
+	"go-backend/internal/store/model"
+)
+
+const (
+	defaultMetricsRangeMs = int64(60 * 60 * 1000)      // 1h
+	maxMetricsRangeMs     = int64(24 * 60 * 60 * 1000) // 24h
+)
+
+func (h *Handler) resolveServiceMonitorLimits() monitoring.ServiceMonitorLimits {
+	defaults := monitoring.DefaultServiceMonitorLimits()
+	if h == nil || h.repo == nil {
+		return defaults
+	}
+	cfg, err := h.repo.GetConfigsByNames([]string{
+		monitoring.ConfigServiceMonitorCheckerScanIntervalSec,
+		monitoring.ConfigServiceMonitorWorkerLimit,
+		monitoring.ConfigServiceMonitorMinIntervalSec,
+		monitoring.ConfigServiceMonitorDefaultIntervalSec,
+		monitoring.ConfigServiceMonitorMinTimeoutSec,
+		monitoring.ConfigServiceMonitorDefaultTimeoutSec,
+		monitoring.ConfigServiceMonitorMaxTimeoutSec,
+	})
+	if err != nil {
+		return defaults
+	}
+	return monitoring.ServiceMonitorLimitsFromConfigMap(cfg)
+}
+
+func (h *Handler) monitorNodeMetricsHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+
+	path := r.URL.Path
+	prefix := "/api/v1/monitor/nodes/"
+	if !strings.HasPrefix(path, prefix) {
+		response.WriteJSON(w, response.ErrDefault("无效的路径"))
+		return
+	}
+
+	rest := strings.TrimPrefix(path, prefix)
+	if strings.HasSuffix(rest, "/metrics/latest") {
+		h.handleNodeMetricsLatest(w, r, strings.TrimSuffix(rest, "/metrics/latest"))
+		return
+	}
+	if strings.HasSuffix(rest, "/metrics") {
+		h.handleNodeMetrics(w, r, strings.TrimSuffix(rest, "/metrics"))
+		return
+	}
+
+	response.WriteJSON(w, response.ErrDefault("无效的路径"))
+}
+
+type monitorNodeListItem struct {
+	ID          int64  `json:"id"`
+	Inx         int    `json:"inx"`
+	Name        string `json:"name"`
+	Status      int    `json:"status"`
+	Version     string `json:"version"`
+	UpdatedTime int64  `json:"updatedTime"`
+}
+
+func (h *Handler) monitorNodeListHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+
+	nodes, err := h.repo.ListMonitorNodes()
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	items := make([]monitorNodeListItem, 0, len(nodes))
+	for _, n := range nodes {
+		updated := int64(0)
+		if n.UpdatedTime.Valid {
+			updated = n.UpdatedTime.Int64
+		}
+		items = append(items, monitorNodeListItem{
+			ID:          n.ID,
+			Inx:         n.Inx,
+			Name:        n.Name,
+			Status:      n.Status,
+			Version:     n.Version.String,
+			UpdatedTime: updated,
+		})
+	}
+
+	response.WriteJSON(w, response.OK(items))
+}
+
+type monitorTunnelListItem struct {
+	ID          int64  `json:"id"`
+	Inx         int    `json:"inx"`
+	Name        string `json:"name"`
+	Status      int    `json:"status"`
+	UpdatedTime int64  `json:"updatedTime"`
+}
+
+func (h *Handler) monitorTunnelListHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+
+	tunnels, err := h.repo.ListMonitorTunnels()
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	items := make([]monitorTunnelListItem, 0, len(tunnels))
+	for _, t := range tunnels {
+		items = append(items, monitorTunnelListItem{
+			ID:          t.ID,
+			Inx:         t.Inx,
+			Name:        t.Name,
+			Status:      t.Status,
+			UpdatedTime: t.UpdatedTime,
+		})
+	}
+
+	response.WriteJSON(w, response.OK(items))
+}
+
+func (h *Handler) handleNodeMetrics(w http.ResponseWriter, r *http.Request, nodeIDStr string) {
+	nodeID, err := strconv.ParseInt(nodeIDStr, 10, 64)
+	if err != nil || nodeID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("无效的节点ID"))
+		return
+	}
+
+	now := time.Now().UnixMilli()
+	startMs := now - defaultMetricsRangeMs
+	endMs := now
+
+	if s := r.URL.Query().Get("start"); s != "" {
+		if v, err := strconv.ParseInt(s, 10, 64); err == nil {
+			startMs = v
+		}
+	}
+	if e := r.URL.Query().Get("end"); e != "" {
+		if v, err := strconv.ParseInt(e, 10, 64); err == nil {
+			endMs = v
+		}
+	}
+	if startMs <= 0 || endMs <= 0 {
+		response.WriteJSON(w, response.ErrDefault("无效的时间范围"))
+		return
+	}
+	if endMs < startMs {
+		response.WriteJSON(w, response.ErrDefault("无效的时间范围"))
+		return
+	}
+	if endMs-startMs > maxMetricsRangeMs {
+		response.WriteJSON(w, response.ErrDefault("时间范围过大"))
+		return
+	}
+
+	metrics, err := h.repo.GetNodeMetrics(nodeID, startMs, endMs)
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	response.WriteJSON(w, response.OK(metrics))
+}
+
+func (h *Handler) handleNodeMetricsLatest(w http.ResponseWriter, _ *http.Request, nodeIDStr string) {
+	nodeID, err := strconv.ParseInt(nodeIDStr, 10, 64)
+	if err != nil || nodeID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("无效的节点ID"))
+		return
+	}
+
+	metric, err := h.repo.GetLatestNodeMetric(nodeID)
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+	if metric == nil {
+		response.WriteJSON(w, response.OK(nil))
+		return
+	}
+
+	response.WriteJSON(w, response.OK(metric))
+}
+
+func (h *Handler) monitorTunnelQualityHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+
+	// Try in-memory cache first
+	if h.qualityProber != nil {
+		items := h.qualityProber.GetAll()
+		if len(items) > 0 {
+			response.WriteJSON(w, response.OK(items))
+			return
+		}
+	}
+
+	// Fallback to database (latest per tunnel)
+	qualities, err := h.repo.GetLatestTunnelQualities()
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	snapshots := make([]tunnelQualitySnapshot, 0, len(qualities))
+	for _, q := range qualities {
+		snapshots = append(snapshots, tunnelQualitySnapshot{
+			TunnelID:           q.TunnelID,
+			EntryToExitLatency: q.EntryToExitLatency,
+			ExitToBingLatency:  q.ExitToBingLatency,
+			EntryToExitLoss:    q.EntryToExitLoss,
+			ExitToBingLoss:     q.ExitToBingLoss,
+			Success:            q.Success == 1,
+			ErrorMessage:       q.ErrorMessage,
+			Timestamp:          q.Timestamp,
+			ChainDetails:       q.ChainDetails,
+		})
+	}
+	response.WriteJSON(w, response.OK(snapshots))
+}
+
+// monitorTunnelQualityHistory returns quality probe history for charting.
+// GET /api/v1/monitor/tunnels/{id}/quality?start=...&end=...
+// Mirrors monitorTunnelMetrics / monitorServiceResultsHandler pattern.
+func (h *Handler) monitorTunnelQualityHistory(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+
+	tunnelIDStr := extractPathParam(r.URL.Path, "/api/v1/monitor/tunnels/", "/quality")
+	tunnelID, err := strconv.ParseInt(tunnelIDStr, 10, 64)
+	if err != nil || tunnelID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("无效的隧道ID"))
+		return
+	}
+
+	now := time.Now().UnixMilli()
+	startMs := now - defaultMetricsRangeMs
+	endMs := now
+
+	if s := r.URL.Query().Get("start"); s != "" {
+		if v, err := strconv.ParseInt(s, 10, 64); err == nil {
+			startMs = v
+		}
+	}
+	if e := r.URL.Query().Get("end"); e != "" {
+		if v, err := strconv.ParseInt(e, 10, 64); err == nil {
+			endMs = v
+		}
+	}
+	if startMs <= 0 || endMs <= 0 || endMs < startMs {
+		response.WriteJSON(w, response.ErrDefault("无效的时间范围"))
+		return
+	}
+	if endMs-startMs > maxMetricsRangeMs {
+		response.WriteJSON(w, response.ErrDefault("时间范围过大"))
+		return
+	}
+
+	results, err := h.repo.GetTunnelQualityHistory(tunnelID, startMs, endMs)
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	response.WriteJSON(w, response.OK(results))
+}
+
+func (h *Handler) monitorTunnelMetrics(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+
+	path := r.URL.Path
+	prefix := "/api/v1/monitor/tunnels/"
+	if !strings.HasPrefix(path, prefix) {
+		response.WriteJSON(w, response.ErrDefault("无效的路径"))
+		return
+	}
+
+	rest := strings.TrimPrefix(path, prefix)
+
+	// Route: /api/v1/monitor/tunnels/{id}/quality
+	if strings.HasSuffix(rest, "/quality") {
+		h.monitorTunnelQualityHistory(w, r)
+		return
+	}
+
+	// Route: /api/v1/monitor/tunnels/{id}/metrics (original)
+	tunnelIDStr := extractPathParam(path, prefix, "/metrics")
+	tunnelID, err := strconv.ParseInt(tunnelIDStr, 10, 64)
+	if err != nil || tunnelID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("无效的隧道ID"))
+		return
+	}
+
+	now := time.Now().UnixMilli()
+	startMs := now - defaultMetricsRangeMs
+	endMs := now
+
+	if s := r.URL.Query().Get("start"); s != "" {
+		if v, err := strconv.ParseInt(s, 10, 64); err == nil {
+			startMs = v
+		}
+	}
+	if e := r.URL.Query().Get("end"); e != "" {
+		if v, err := strconv.ParseInt(e, 10, 64); err == nil {
+			endMs = v
+		}
+	}
+	if startMs <= 0 || endMs <= 0 {
+		response.WriteJSON(w, response.ErrDefault("无效的时间范围"))
+		return
+	}
+	if endMs < startMs {
+		response.WriteJSON(w, response.ErrDefault("无效的时间范围"))
+		return
+	}
+	if endMs-startMs > maxMetricsRangeMs {
+		response.WriteJSON(w, response.ErrDefault("时间范围过大"))
+		return
+	}
+
+	metrics, err := h.repo.GetTunnelMetricsAggregated(tunnelID, startMs, endMs)
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	response.WriteJSON(w, response.OK(metrics))
+}
+
+func (h *Handler) monitorServiceListHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+
+	monitors, err := h.repo.ListServiceMonitors()
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	response.WriteJSON(w, response.OK(monitors))
+}
+
+type createServiceMonitorRequest struct {
+	Name        string `json:"name"`
+	Type        string `json:"type"`
+	Target      string `json:"target"`
+	IntervalSec int    `json:"intervalSec"`
+	TimeoutSec  int    `json:"timeoutSec"`
+	NodeID      int64  `json:"nodeId"`
+	Enabled     *int   `json:"enabled"`
+}
+
+func (h *Handler) monitorServiceCreate(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+
+	var req createServiceMonitorRequest
+	if err := decodeJSON(r.Body, &req); err != nil {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+
+	name := strings.TrimSpace(req.Name)
+	if name == "" {
+		response.WriteJSON(w, response.ErrDefault("名称不能为空"))
+		return
+	}
+
+	monitorType := strings.ToLower(strings.TrimSpace(req.Type))
+	if monitorType != "tcp" && monitorType != "icmp" {
+		response.WriteJSON(w, response.ErrDefault("类型必须是 tcp 或 icmp"))
+		return
+	}
+
+	target := strings.TrimSpace(req.Target)
+	if target == "" {
+		response.WriteJSON(w, response.ErrDefault("目标地址不能为空"))
+		return
+	}
+
+	limits := h.resolveServiceMonitorLimits()
+
+	intervalSec := req.IntervalSec
+	if intervalSec <= 0 {
+		intervalSec = limits.DefaultIntervalSec
+	}
+	if intervalSec < limits.MinIntervalSec {
+		intervalSec = limits.MinIntervalSec
+	}
+
+	timeoutSec := req.TimeoutSec
+	if timeoutSec <= 0 {
+		timeoutSec = limits.DefaultTimeoutSec
+	}
+	if timeoutSec < limits.MinTimeoutSec {
+		timeoutSec = limits.MinTimeoutSec
+	}
+	if timeoutSec > limits.MaxTimeoutSec {
+		timeoutSec = limits.MaxTimeoutSec
+	}
+
+	enabled := 1
+	if req.Enabled != nil {
+		if *req.Enabled == 0 || *req.Enabled == 1 {
+			enabled = *req.Enabled
+		}
+	}
+
+	now := time.Now().UnixMilli()
+	if req.NodeID > 0 {
+		n, err := h.repo.GetNodeByID(req.NodeID)
+		if err != nil {
+			response.WriteJSON(w, response.Err(-2, err.Error()))
+			return
+		}
+		if n == nil {
+			response.WriteJSON(w, response.ErrDefault("节点不存在"))
+			return
+		}
+	}
+	m := &model.ServiceMonitor{
+		Name:        name,
+		Type:        monitorType,
+		Target:      target,
+		IntervalSec: intervalSec,
+		TimeoutSec:  timeoutSec,
+		NodeID:      req.NodeID,
+		Enabled:     enabled,
+		CreatedTime: now,
+		UpdatedTime: now,
+	}
+	if m.Type == "icmp" && m.NodeID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("ICMP 监控必须选择执行节点"))
+		return
+	}
+	// enabled is already normalized above.
+
+	if err := h.repo.CreateServiceMonitor(m); err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	response.WriteJSON(w, response.OK(m))
+}
+
+type updateServiceMonitorRequest struct {
+	ID          int64  `json:"id"`
+	Name        string `json:"name"`
+	Type        string `json:"type"`
+	Target      string `json:"target"`
+	IntervalSec int    `json:"intervalSec"`
+	TimeoutSec  int    `json:"timeoutSec"`
+	NodeID      *int64 `json:"nodeId"`
+	Enabled     *int   `json:"enabled"`
+}
+
+func (h *Handler) monitorServiceUpdate(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+
+	var req updateServiceMonitorRequest
+	if err := decodeJSON(r.Body, &req); err != nil {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+
+	if req.ID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("无效的监控ID"))
+		return
+	}
+
+	existing, err := h.repo.GetServiceMonitor(req.ID)
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+	if existing == nil {
+		response.WriteJSON(w, response.ErrDefault("监控不存在"))
+		return
+	}
+
+	name := strings.TrimSpace(req.Name)
+	if name != "" {
+		existing.Name = name
+	}
+
+	monitorType := strings.ToLower(strings.TrimSpace(req.Type))
+	if monitorType == "tcp" || monitorType == "icmp" {
+		existing.Type = monitorType
+	}
+
+	target := strings.TrimSpace(req.Target)
+	if target != "" {
+		existing.Target = target
+	}
+
+	limits := h.resolveServiceMonitorLimits()
+
+	if req.IntervalSec > 0 {
+		intervalSec := req.IntervalSec
+		if intervalSec < limits.MinIntervalSec {
+			intervalSec = limits.MinIntervalSec
+		}
+		existing.IntervalSec = intervalSec
+	}
+	if req.TimeoutSec > 0 {
+		timeoutSec := req.TimeoutSec
+		if timeoutSec < limits.MinTimeoutSec {
+			timeoutSec = limits.MinTimeoutSec
+		}
+		if timeoutSec > limits.MaxTimeoutSec {
+			timeoutSec = limits.MaxTimeoutSec
+		}
+		existing.TimeoutSec = timeoutSec
+	}
+
+	if req.NodeID != nil {
+		existing.NodeID = *req.NodeID
+	}
+	if req.Enabled != nil {
+		if *req.Enabled == 0 || *req.Enabled == 1 {
+			existing.Enabled = *req.Enabled
+		}
+	}
+
+	existing.UpdatedTime = time.Now().UnixMilli()
+	if existing.Type == "icmp" && existing.NodeID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("ICMP 监控必须选择执行节点"))
+		return
+	}
+	if existing.NodeID > 0 {
+		n, err := h.repo.GetNodeByID(existing.NodeID)
+		if err != nil {
+			response.WriteJSON(w, response.Err(-2, err.Error()))
+			return
+		}
+		if n == nil {
+			response.WriteJSON(w, response.ErrDefault("节点不存在"))
+			return
+		}
+	}
+
+	if err := h.repo.UpdateServiceMonitor(existing); err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	response.WriteJSON(w, response.OK(existing))
+}
+
+type deleteServiceMonitorRequest struct {
+	ID int64 `json:"id"`
+}
+
+func (h *Handler) monitorServiceDelete(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+
+	var req deleteServiceMonitorRequest
+	if err := decodeJSON(r.Body, &req); err != nil {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+
+	if req.ID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("无效的监控ID"))
+		return
+	}
+
+	if err := h.repo.DeleteServiceMonitor(req.ID); err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	response.WriteJSON(w, response.OKEmpty())
+}
+
+func (h *Handler) monitorServiceRun(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+	if h.healthCheck == nil {
+		response.WriteJSON(w, response.ErrDefault("监控服务不可用"))
+		return
+	}
+
+	var req deleteServiceMonitorRequest
+	if err := decodeJSON(r.Body, &req); err != nil {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+	if req.ID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("无效的监控ID"))
+		return
+	}
+
+	m, err := h.repo.GetServiceMonitor(req.ID)
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+	if m == nil {
+		response.WriteJSON(w, response.ErrDefault("监控不存在"))
+		return
+	}
+
+	res, err := h.healthCheck.RunOnce(m)
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+	if err := h.repo.InsertServiceMonitorResult(res); err != nil {
+		log.Printf("monitoring write failed op=service_monitor_result.manual_insert monitor_id=%d err=%v", res.MonitorID, err)
+	}
+	response.WriteJSON(w, response.OK(res))
+}
+
+func (h *Handler) monitorServiceResultsHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+
+	monitorIDStr := extractPathParam(r.URL.Path, "/api/v1/monitor/services/", "/results")
+	monitorID, err := strconv.ParseInt(monitorIDStr, 10, 64)
+	if err != nil || monitorID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("无效的监控ID"))
+		return
+	}
+
+	// If start/end time range is provided, use time-based query (mirrors node metrics / tunnel quality pattern).
+	startStr := r.URL.Query().Get("start")
+	endStr := r.URL.Query().Get("end")
+	if startStr != "" && endStr != "" {
+		startMs, err1 := strconv.ParseInt(startStr, 10, 64)
+		endMs, err2 := strconv.ParseInt(endStr, 10, 64)
+		if err1 != nil || err2 != nil || startMs <= 0 || endMs <= 0 || endMs < startMs {
+			response.WriteJSON(w, response.ErrDefault("无效的时间范围"))
+			return
+		}
+		if endMs-startMs > maxMetricsRangeMs {
+			response.WriteJSON(w, response.ErrDefault("时间范围过大"))
+			return
+		}
+		results, err := h.repo.GetServiceMonitorResultsByTimeRange(monitorID, startMs, endMs)
+		if err != nil {
+			response.WriteJSON(w, response.Err(-2, err.Error()))
+			return
+		}
+		response.WriteJSON(w, response.OK(results))
+		return
+	}
+
+	// Fallback: count-based limit query (backward compat).
+	limit := 100
+	if l := r.URL.Query().Get("limit"); l != "" {
+		if v, err := strconv.Atoi(l); err == nil && v > 0 && v <= 1000 {
+			limit = v
+		}
+	}
+
+	results, err := h.repo.GetServiceMonitorResults(monitorID, limit)
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	response.WriteJSON(w, response.OK(results))
+}
+
+func (h *Handler) monitorServiceLatestResultsHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+
+	// Try in-memory cache first (updated every 1s)
+	if h.healthCheck != nil {
+		cached := h.healthCheck.GetLatestCached()
+		if len(cached) > 0 {
+			response.WriteJSON(w, response.OK(cached))
+			return
+		}
+	}
+
+	// Fallback to database
+	results, err := h.repo.GetLatestServiceMonitorResults()
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+	response.WriteJSON(w, response.OK(results))
+}
+
+func (h *Handler) monitorServiceLimitsHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+	response.WriteJSON(w, response.OK(h.resolveServiceMonitorLimits()))
+}
+
+func extractPathParam(path, prefix, suffix string) string {
+	if !strings.HasPrefix(path, prefix) {
+		return ""
+	}
+	rest := strings.TrimPrefix(path, prefix)
+	if suffix != "" {
+		rest = strings.TrimSuffix(rest, suffix)
+	}
+	return rest
+}
+
+type monitorAccessData struct {
+	Allowed bool   `json:"allowed"`
+	Reason  string `json:"reason,omitempty"`
+}
+
+// monitorAccessHandler is a lightweight capability check for frontend navigation.
+// It does NOT replace authorization on the actual monitoring endpoints.
+func (h *Handler) monitorAccessHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+
+	userID, roleID, err := userRoleFromRequest(r)
+	if err != nil {
+		response.WriteJSON(w, response.Err(401, "未登录或token已过期"))
+		return
+	}
+	if roleID == 0 {
+		response.WriteJSON(w, response.OK(monitorAccessData{Allowed: true}))
+		return
+	}
+
+	allowed, err := h.repo.HasMonitorPermission(userID)
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+	data := monitorAccessData{Allowed: allowed}
+	if !allowed {
+		data.Reason = "need_admin_grant"
+	}
+	response.WriteJSON(w, response.OK(data))
+}
+
+func (h *Handler) ensureAdminAccess(w http.ResponseWriter, r *http.Request) bool {
+	_, roleID, err := userRoleFromRequest(r)
+	if err != nil {
+		response.WriteJSON(w, response.Err(401, "未登录或token已过期"))
+		return false
+	}
+	if roleID != 0 {
+		response.WriteJSON(w, response.Err(403, "权限不足，仅管理员可操作"))
+		return false
+	}
+	return true
+}
+
+func (h *Handler) ensureMonitoringAccess(w http.ResponseWriter, r *http.Request) bool {
+	userID, roleID, err := userRoleFromRequest(r)
+	if err != nil {
+		response.WriteJSON(w, response.Err(401, "未登录或token已过期"))
+		return false
+	}
+	if roleID == 0 {
+		return true
+	}
+	allowed, err := h.repo.HasMonitorPermission(userID)
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return false
+	}
+	if !allowed {
+		response.WriteJSON(w, response.Err(403, "权限不足：当前账户非管理员，且未被授予监控权限。请联系管理员在用户管理中授权监控权限。"))
+		return false
+	}
+	return true
+}
+
+func (h *Handler) monitorPermissionList(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureAdminAccess(w, r) {
+		return
+	}
+
+	items, err := h.repo.ListMonitorPermissions()
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+	response.WriteJSON(w, response.OK(items))
+}
+
+type monitorPermissionMutationRequest struct {
+	UserID int64 `json:"userId"`
+}
+
+func (h *Handler) monitorPermissionAssign(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureAdminAccess(w, r) {
+		return
+	}
+
+	var req monitorPermissionMutationRequest
+	if err := decodeJSON(r.Body, &req); err != nil {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+	if req.UserID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("无效的用户ID"))
+		return
+	}
+
+	u, err := h.repo.GetUserByID(req.UserID)
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+	if u == nil {
+		response.WriteJSON(w, response.ErrDefault("用户不存在"))
+		return
+	}
+
+	if err := h.repo.InsertMonitorPermission(req.UserID, time.Now().UnixMilli()); err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+	response.WriteJSON(w, response.OKEmpty())
+}
+
+func (h *Handler) monitorPermissionRemove(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureAdminAccess(w, r) {
+		return
+	}
+
+	var req monitorPermissionMutationRequest
+	if err := decodeJSON(r.Body, &req); err != nil {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+	if req.UserID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("无效的用户ID"))
+		return
+	}
+
+	if err := h.repo.DeleteMonitorPermission(req.UserID); err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+	response.WriteJSON(w, response.OKEmpty())
+}

go-backend/internal/http/handler/mutations_forward_ports_test.go

@@ -0,0 +1,39 @@
+package handler
+
+import "testing"
+
+func TestBuildForwardPortEntriesWithPreservedInIP(t *testing.T) {
+	entryNodeIDs := []int64{10, 20, 30}
+	oldPorts := []forwardPortRecord{
+		{NodeID: 10, Port: 10001, InIP: ""},
+		{NodeID: 10, Port: 10002, InIP: "10.0.0.10"},
+		{NodeID: 20, Port: 10003, InIP: "10.0.0.20"},
+	}
+
+	entries := buildForwardPortEntriesWithPreservedInIP(entryNodeIDs, oldPorts, 18080)
+	if len(entries) != 3 {
+		t.Fatalf("expected 3 entries, got %d", len(entries))
+	}
+
+	if entries[0].NodeID != 10 || entries[0].Port != 18080 || entries[0].InIP != "10.0.0.10" {
+		t.Fatalf("unexpected first entry: %+v", entries[0])
+	}
+	if entries[1].NodeID != 20 || entries[1].Port != 18080 || entries[1].InIP != "10.0.0.20" {
+		t.Fatalf("unexpected second entry: %+v", entries[1])
+	}
+	if entries[2].NodeID != 30 || entries[2].Port != 18080 || entries[2].InIP != "" {
+		t.Fatalf("unexpected third entry: %+v", entries[2])
+	}
+}
+
+func TestBuildForwardPortEntriesWithPreservedInIP_EmptyOldPorts(t *testing.T) {
+	entryNodeIDs := []int64{99}
+	entries := buildForwardPortEntriesWithPreservedInIP(entryNodeIDs, nil, 17000)
+
+	if len(entries) != 1 {
+		t.Fatalf("expected 1 entry, got %d", len(entries))
+	}
+	if entries[0].NodeID != 99 || entries[0].Port != 17000 || entries[0].InIP != "" {
+		t.Fatalf("unexpected entry: %+v", entries[0])
+	}
+}

go-backend/internal/http/handler/reconstruct_tunnel_state_test.go

@@ -0,0 +1,79 @@
+package handler
+
+import (
+	"path/filepath"
+	"testing"
+	"time"
+
+	"go-backend/internal/store/repo"
+)
+
+func TestReconstructTunnelState_PreservesConnectIP(t *testing.T) {
+	dbPath := filepath.Join(t.TempDir(), "reconstruct-connect-ip.db")
+	r, err := repo.Open(dbPath)
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	t.Cleanup(func() { _ = r.Close() })
+
+	h := New(r, "secret")
+	now := time.Now().UnixMilli()
+
+	if err := r.DB().Exec(`
+		INSERT INTO tunnel(id, name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(1, 'reconstruct-tunnel', 1.0, 2, 'tls', 1, ?, ?, 1, NULL, 0)
+	`, now, now).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+
+	insertNode := func(id int64, name, ip string) {
+		if err := r.DB().Exec(`
+			INSERT INTO node(id, name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx)
+			VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+		`, id, name, name+"-secret", ip, ip, "", "30000-30010", "", "v1", 1, 1, 1, now, now, 1, "[::]", "[::]", 0).Error; err != nil {
+			t.Fatalf("insert node %s: %v", name, err)
+		}
+	}
+
+	insertNode(101, "entry", "10.90.0.10")
+	insertNode(102, "middle", "10.90.0.20")
+	insertNode(103, "exit", "10.90.0.30")
+
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(1, '1', 101, 30001, 'round', 1, 'tls')
+	`).Error; err != nil {
+		t.Fatalf("insert entry chain: %v", err)
+	}
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol, connect_ip)
+		VALUES(1, '2', 102, 30002, 'round', 1, 'tls', '10.99.9.22')
+	`).Error; err != nil {
+		t.Fatalf("insert middle chain: %v", err)
+	}
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol, connect_ip)
+		VALUES(1, '3', 103, 30003, 'round', 1, 'tls', '10.99.9.33')
+	`).Error; err != nil {
+		t.Fatalf("insert exit chain: %v", err)
+	}
+
+	state, err := h.reconstructTunnelState(1)
+	if err != nil {
+		t.Fatalf("reconstructTunnelState: %v", err)
+	}
+
+	if len(state.ChainHops) != 1 || len(state.ChainHops[0]) != 1 {
+		t.Fatalf("unexpected chain hops: %+v", state.ChainHops)
+	}
+	if got := state.ChainHops[0][0].ConnectIP; got != "10.99.9.22" {
+		t.Fatalf("expected middle connectIp 10.99.9.22, got %q", got)
+	}
+
+	if len(state.OutNodes) != 1 {
+		t.Fatalf("unexpected out nodes: %+v", state.OutNodes)
+	}
+	if got := state.OutNodes[0].ConnectIP; got != "10.99.9.33" {
+		t.Fatalf("expected exit connectIp 10.99.9.33, got %q", got)
+	}
+}

go-backend/internal/http/handler/tunnel_delete_resolution.go

@@ -0,0 +1,655 @@
+package handler
+
+import (
+	"errors"
+	"fmt"
+	"net/http"
+	"strings"
+	"time"
+
+	"go-backend/internal/http/response"
+)
+
+const tunnelDeletePreviewSampleLimit = 5
+
+const (
+	tunnelDeleteActionReplace        = "replace"
+	tunnelDeleteActionDeleteForwards = "delete_forwards"
+)
+
+var (
+	errInvalidTunnelDeleteTarget = errors.New("invalid tunnel delete target")
+)
+
+type tunnelDeleteForwardPreviewItem struct {
+	ID       int64  `json:"id"`
+	Name     string `json:"name"`
+	UserID   int64  `json:"userId"`
+	UserName string `json:"userName"`
+	InPort   int    `json:"inPort"`
+}
+
+type tunnelDeletePreviewData struct {
+	TunnelID       int64                            `json:"tunnelId"`
+	TunnelName     string                           `json:"tunnelName"`
+	ForwardCount   int                              `json:"forwardCount"`
+	SampleForwards []tunnelDeleteForwardPreviewItem `json:"sampleForwards"`
+}
+
+type tunnelBatchDeletePreviewData struct {
+	TunnelCount       int                       `json:"tunnelCount"`
+	TotalForwardCount int                       `json:"totalForwardCount"`
+	Items             []tunnelDeletePreviewData `json:"items"`
+}
+
+type tunnelDeleteWithForwardsRequest struct {
+	ID             int64  `json:"id"`
+	Action         string `json:"action"`
+	TargetTunnelID int64  `json:"targetTunnelId"`
+}
+
+type tunnelBatchDeleteWithForwardsRequest struct {
+	IDs            []int64 `json:"ids"`
+	Action         string  `json:"action"`
+	TargetTunnelID int64   `json:"targetTunnelId"`
+}
+
+type tunnelDeleteWithForwardsResult struct {
+	ForwardCount        int      `json:"forwardCount"`
+	MigratedCount       int      `json:"migratedCount"`
+	DeletedForwardCount int      `json:"deletedForwardCount"`
+	PortAdjustedCount   int      `json:"portAdjustedCount"`
+	Warnings            []string `json:"warnings,omitempty"`
+}
+
+type tunnelBatchDeleteWithForwardsResult struct {
+	SuccessCount        int                  `json:"successCount"`
+	FailCount           int                  `json:"failCount"`
+	Failures            []batchFailureDetail `json:"failures,omitempty"`
+	DeletedForwardCount int                  `json:"deletedForwardCount"`
+	MigratedCount       int                  `json:"migratedCount"`
+	PortAdjustedCount   int                  `json:"portAdjustedCount"`
+	Warnings            []string             `json:"warnings,omitempty"`
+}
+
+type tunnelForwardMigrationPlan struct {
+	forward        *forwardRecord
+	oldPorts       []forwardPortRecord
+	targetTunnelID int64
+	targetPort     int
+	keptNodeIDs    []int64
+	removedNodeIDs []int64
+	portAdjusted   bool
+}
+
+func (h *Handler) tunnelDeletePreview(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+
+	id := idFromBody(r, w)
+	if id <= 0 {
+		return
+	}
+
+	preview, err := h.buildTunnelDeletePreview(id)
+	if err != nil {
+		if strings.Contains(err.Error(), "不存在") {
+			response.WriteJSON(w, response.ErrDefault(err.Error()))
+			return
+		}
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	response.WriteJSON(w, response.OK(preview))
+}
+
+func (h *Handler) tunnelBatchDeletePreview(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+
+	var req struct {
+		IDs []int64 `json:"ids"`
+	}
+	if err := decodeJSON(r.Body, &req); err != nil || len(req.IDs) == 0 {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+
+	preview, err := h.buildTunnelBatchDeletePreview(req.IDs)
+	if err != nil {
+		if strings.Contains(err.Error(), "不存在") {
+			response.WriteJSON(w, response.ErrDefault(err.Error()))
+			return
+		}
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	response.WriteJSON(w, response.OK(preview))
+}
+
+func (h *Handler) tunnelDeleteWithForwards(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+
+	var req tunnelDeleteWithForwardsRequest
+	if err := decodeJSON(r.Body, &req); err != nil || req.ID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+
+	action, err := normalizeTunnelDeleteAction(req.Action)
+	if err != nil {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+	if action == tunnelDeleteActionReplace {
+		if _, _, authErr := userRoleFromRequest(r); authErr != nil {
+			response.WriteJSON(w, response.Err(401, "无效的token或token已过期"))
+			return
+		}
+	}
+
+	result, failures, err := h.processTunnelDeleteWithForwards(req.ID, action, req.TargetTunnelID)
+	if err != nil {
+		if err == errInvalidTunnelDeleteTarget {
+			response.WriteJSON(w, response.ErrDefault("目标隧道不能为空"))
+			return
+		}
+		if strings.Contains(err.Error(), "目标隧道不能与当前隧道相同") || strings.Contains(err.Error(), "目标隧道不存在") || strings.Contains(err.Error(), "目标隧道已禁用") || strings.Contains(err.Error(), "隧道不存在") {
+			response.WriteJSON(w, response.ErrDefault(err.Error()))
+			return
+		}
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+	if len(failures) > 0 {
+		response.WriteJSON(w, response.R{
+			Code: -2,
+			Msg:  "部分规则迁移失败",
+			TS:   time.Now().UnixMilli(),
+			Data: batchOperationResult{SuccessCount: 0, FailCount: len(failures), Failures: failures},
+		})
+		return
+	}
+
+	response.WriteJSON(w, response.OK(result))
+}
+
+func (h *Handler) tunnelBatchDeleteWithForwards(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+
+	var req tunnelBatchDeleteWithForwardsRequest
+	if err := decodeJSON(r.Body, &req); err != nil || len(req.IDs) == 0 {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+
+	action, err := normalizeTunnelDeleteAction(req.Action)
+	if err != nil {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+	if action == tunnelDeleteActionReplace {
+		if _, _, authErr := userRoleFromRequest(r); authErr != nil {
+			response.WriteJSON(w, response.Err(401, "无效的token或token已过期"))
+			return
+		}
+	}
+
+	normalizedIDs := normalizeTunnelIDs(req.IDs)
+	if len(normalizedIDs) == 0 {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+
+	if action == tunnelDeleteActionReplace {
+		if req.TargetTunnelID <= 0 {
+			response.WriteJSON(w, response.ErrDefault("目标隧道不能为空"))
+			return
+		}
+		for _, id := range normalizedIDs {
+			if id == req.TargetTunnelID {
+				response.WriteJSON(w, response.ErrDefault("目标隧道不能包含在删除列表中"))
+				return
+			}
+		}
+	}
+
+	result := tunnelBatchDeleteWithForwardsResult{}
+	for _, tunnelID := range normalizedIDs {
+		tunnelName, _ := h.repo.GetTunnelName(tunnelID)
+		singleResult, failures, processErr := h.processTunnelDeleteWithForwards(tunnelID, action, req.TargetTunnelID)
+		if processErr != nil {
+			result.FailCount++
+			result.Failures = appendBatchFailure(result.Failures, tunnelID, tunnelName, processErr)
+			continue
+		}
+		if len(failures) > 0 {
+			result.FailCount++
+			result.Failures = appendBatchFailureReason(
+				result.Failures,
+				tunnelID,
+				tunnelName,
+				summarizeTunnelDeleteRuleFailures(failures),
+			)
+			continue
+		}
+
+		result.SuccessCount++
+		result.DeletedForwardCount += singleResult.DeletedForwardCount
+		result.MigratedCount += singleResult.MigratedCount
+		result.PortAdjustedCount += singleResult.PortAdjustedCount
+		if len(singleResult.Warnings) > 0 {
+			result.Warnings = append(result.Warnings, singleResult.Warnings...)
+		}
+	}
+
+	response.WriteJSON(w, response.OK(result))
+}
+
+func (h *Handler) buildTunnelDeletePreview(tunnelID int64) (*tunnelDeletePreviewData, error) {
+	if _, err := h.getTunnelRecord(tunnelID); err != nil {
+		return nil, err
+	}
+
+	tunnelName, err := h.repo.GetTunnelName(tunnelID)
+	if err != nil {
+		return nil, err
+	}
+
+	forwards, err := h.listForwardsByTunnel(tunnelID)
+	if err != nil {
+		return nil, err
+	}
+
+	samples := make([]tunnelDeleteForwardPreviewItem, 0, minInt(len(forwards), tunnelDeletePreviewSampleLimit))
+	for i, forward := range forwards {
+		if i >= tunnelDeletePreviewSampleLimit {
+			break
+		}
+		ports, portsErr := h.listForwardPorts(forward.ID)
+		if portsErr != nil {
+			return nil, portsErr
+		}
+		inPort := 0
+		if len(ports) > 0 {
+			inPort = ports[0].Port
+		}
+		samples = append(samples, tunnelDeleteForwardPreviewItem{
+			ID:       forward.ID,
+			Name:     forward.Name,
+			UserID:   forward.UserID,
+			UserName: forward.UserName,
+			InPort:   inPort,
+		})
+	}
+
+	return &tunnelDeletePreviewData{
+		TunnelID:       tunnelID,
+		TunnelName:     tunnelName,
+		ForwardCount:   len(forwards),
+		SampleForwards: samples,
+	}, nil
+}
+
+func (h *Handler) buildTunnelBatchDeletePreview(ids []int64) (*tunnelBatchDeletePreviewData, error) {
+	normalizedIDs := normalizeTunnelIDs(ids)
+	items := make([]tunnelDeletePreviewData, 0, len(normalizedIDs))
+	totalForwardCount := 0
+	for _, id := range normalizedIDs {
+		preview, err := h.buildTunnelDeletePreview(id)
+		if err != nil {
+			return nil, err
+		}
+		items = append(items, *preview)
+		totalForwardCount += preview.ForwardCount
+	}
+	return &tunnelBatchDeletePreviewData{
+		TunnelCount:       len(items),
+		TotalForwardCount: totalForwardCount,
+		Items:             items,
+	}, nil
+}
+
+func normalizeTunnelDeleteAction(action string) (string, error) {
+	normalized := strings.TrimSpace(action)
+	if normalized == "" {
+		return tunnelDeleteActionDeleteForwards, nil
+	}
+	if normalized != tunnelDeleteActionReplace && normalized != tunnelDeleteActionDeleteForwards {
+		return "", errors.New("invalid tunnel delete action")
+	}
+	return normalized, nil
+}
+
+func normalizeTunnelIDs(ids []int64) []int64 {
+	seen := make(map[int64]struct{}, len(ids))
+	out := make([]int64, 0, len(ids))
+	for _, id := range ids {
+		if id <= 0 {
+			continue
+		}
+		if _, exists := seen[id]; exists {
+			continue
+		}
+		seen[id] = struct{}{}
+		out = append(out, id)
+	}
+	return out
+}
+
+func summarizeTunnelDeleteRuleFailures(failures []batchFailureDetail) string {
+	if len(failures) == 0 {
+		return "未知错误"
+	}
+	parts := make([]string, 0, minInt(len(failures), 3))
+	for i, failure := range failures {
+		if i >= 3 {
+			break
+		}
+		name := strings.TrimSpace(failure.Name)
+		if name == "" {
+			name = fmt.Sprintf("规则 #%d", failure.ID)
+		}
+		parts = append(parts, fmt.Sprintf("%s: %s", name, strings.TrimSpace(failure.Reason)))
+	}
+	if len(failures) > 3 {
+		parts = append(parts, fmt.Sprintf("另有 %d 条规则失败", len(failures)-3))
+	}
+	return strings.Join(parts, "；")
+}
+
+func (h *Handler) processTunnelDeleteWithForwards(tunnelID int64, action string, targetTunnelID int64) (tunnelDeleteWithForwardsResult, []batchFailureDetail, error) {
+	preview, err := h.buildTunnelDeletePreview(tunnelID)
+	if err != nil {
+		return tunnelDeleteWithForwardsResult{}, nil, err
+	}
+
+	result := tunnelDeleteWithForwardsResult{ForwardCount: preview.ForwardCount}
+	if preview.ForwardCount == 0 {
+		if err := h.deleteTunnelAndCleanup(tunnelID); err != nil {
+			return tunnelDeleteWithForwardsResult{}, nil, err
+		}
+		return result, nil, nil
+	}
+
+	if action == tunnelDeleteActionDeleteForwards {
+		result.DeletedForwardCount = preview.ForwardCount
+		if err := h.deleteTunnelAndCleanup(tunnelID); err != nil {
+			return tunnelDeleteWithForwardsResult{}, nil, err
+		}
+		return result, nil, nil
+	}
+
+	if targetTunnelID <= 0 {
+		return tunnelDeleteWithForwardsResult{}, nil, errInvalidTunnelDeleteTarget
+	}
+	if targetTunnelID == tunnelID {
+		return tunnelDeleteWithForwardsResult{}, nil, errors.New("目标隧道不能与当前隧道相同")
+	}
+	return h.processTunnelDeleteReplaceAction(tunnelID, targetTunnelID, result)
+}
+
+func (h *Handler) processTunnelDeleteReplaceAction(tunnelID, targetTunnelID int64, result tunnelDeleteWithForwardsResult) (tunnelDeleteWithForwardsResult, []batchFailureDetail, error) {
+	targetTunnel, err := h.getTunnelRecord(targetTunnelID)
+	if err != nil {
+		return tunnelDeleteWithForwardsResult{}, nil, errors.New("目标隧道不存在")
+	}
+	if targetTunnel.Status != 1 {
+		return tunnelDeleteWithForwardsResult{}, nil, errors.New("目标隧道已禁用")
+	}
+
+	plans, failures, err := h.planTunnelDeleteForwardMigrations(tunnelID, targetTunnelID)
+	if err != nil {
+		return tunnelDeleteWithForwardsResult{}, nil, err
+	}
+	if len(failures) > 0 {
+		return tunnelDeleteWithForwardsResult{}, failures, nil
+	}
+
+	portAdjustedCount := 0
+	warnings, execErr, execFailure := h.executeTunnelDeleteForwardMigrations(plans)
+	for _, plan := range plans {
+		if plan.portAdjusted {
+			portAdjustedCount++
+		}
+	}
+	if execErr != nil {
+		failures = append(failures, execFailure)
+		return tunnelDeleteWithForwardsResult{}, failures, nil
+	}
+
+	if err := h.deleteTunnelAndCleanup(tunnelID); err != nil {
+		h.rollbackTunnelForwardMigrationPlans(plans)
+		_ = h.redeployTunnelAndForwards(tunnelID)
+		return tunnelDeleteWithForwardsResult{}, nil, err
+	}
+
+	result.MigratedCount = len(plans)
+	result.PortAdjustedCount = portAdjustedCount
+	if len(warnings) > 0 {
+		result.Warnings = warnings
+	}
+	return result, nil, nil
+}
+
+func (h *Handler) planTunnelDeleteForwardMigrations(sourceTunnelID, targetTunnelID int64) ([]tunnelForwardMigrationPlan, []batchFailureDetail, error) {
+	forwards, err := h.listForwardsByTunnel(sourceTunnelID)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	entryNodes, err := h.tunnelEntryNodeIDs(targetTunnelID)
+	if err != nil {
+		return nil, nil, err
+	}
+	if len(entryNodes) == 0 {
+		return nil, nil, errors.New("目标隧道缺少入口节点")
+	}
+
+	plans := make([]tunnelForwardMigrationPlan, 0, len(forwards))
+	failures := make([]batchFailureDetail, 0)
+	reservedPorts := make(map[int64]map[int]bool)
+
+	for _, forward := range forwards {
+		plan, planErr := h.planSingleTunnelDeleteForwardMigration(&forward, targetTunnelID, entryNodes, reservedPorts)
+		if planErr != nil {
+			failures = appendBatchFailure(failures, forward.ID, forward.Name, planErr)
+			continue
+		}
+		plans = append(plans, plan)
+	}
+
+	return plans, failures, nil
+}
+
+func (h *Handler) planSingleTunnelDeleteForwardMigration(forward *forwardRecord, targetTunnelID int64, targetEntryNodes []int64, reservedPorts map[int64]map[int]bool) (tunnelForwardMigrationPlan, error) {
+	if forward == nil {
+		return tunnelForwardMigrationPlan{}, errors.New("转发不存在")
+	}
+
+	oldPorts, err := h.listForwardPorts(forward.ID)
+	if err != nil {
+		return tunnelForwardMigrationPlan{}, err
+	}
+	if len(oldPorts) == 0 {
+		return tunnelForwardMigrationPlan{}, errors.New("转发入口端口不存在")
+	}
+
+	minPort := h.repo.GetMinForwardPort(forward.ID)
+	targetPort := 0
+	if minPort.Valid {
+		targetPort = int(minPort.Int64)
+	}
+	if targetPort <= 0 {
+		targetPort = h.pickTunnelPort(targetTunnelID)
+	}
+	if targetPort <= 0 {
+		targetPort = 10000
+	}
+
+	hasCustomInIP := false
+	for _, oldPort := range oldPorts {
+		if strings.TrimSpace(oldPort.InIP) != "" {
+			hasCustomInIP = true
+			break
+		}
+	}
+	if hasCustomInIP && len(targetEntryNodes) > 1 {
+		return tunnelForwardMigrationPlan{}, errors.New("多入口隧道的转发不支持保留自定义监听IP，请先手动调整该规则")
+	}
+
+	for _, nodeID := range targetEntryNodes {
+		node, nodeErr := h.getNodeRecord(nodeID)
+		if nodeErr != nil {
+			return tunnelForwardMigrationPlan{}, nodeErr
+		}
+		if err := validateRemoteNodePort(node, targetPort); err != nil {
+			return tunnelForwardMigrationPlan{}, err
+		}
+		if err := validateLocalNodePort(node, targetPort); err != nil {
+			return tunnelForwardMigrationPlan{}, err
+		}
+		if err := h.validateForwardPortAvailability(node, targetPort, forward.ID); err != nil {
+			return tunnelForwardMigrationPlan{}, err
+		}
+		if reservedOnNode, ok := reservedPorts[nodeID]; ok && reservedOnNode[targetPort] {
+			return tunnelForwardMigrationPlan{}, fmt.Errorf("目标隧道入口节点端口 %d 已被本次迁移中的其他规则占用", targetPort)
+		}
+	}
+
+	for _, nodeID := range targetEntryNodes {
+		reservedOnNode := reservedPorts[nodeID]
+		if reservedOnNode == nil {
+			reservedOnNode = make(map[int]bool)
+			reservedPorts[nodeID] = reservedOnNode
+		}
+		reservedOnNode[targetPort] = true
+	}
+
+	oldNodeIDs := forwardPortNodeIDs(oldPorts)
+	newNodeIDs := uniqueInt64s(targetEntryNodes)
+	removedNodeIDs := diffInt64s(oldNodeIDs, newNodeIDs)
+	keptNodeIDs := diffInt64s(oldNodeIDs, removedNodeIDs)
+
+	previousPort := 0
+	if len(oldPorts) > 0 {
+		previousPort = oldPorts[0].Port
+	}
+
+	return tunnelForwardMigrationPlan{
+		forward:        forward,
+		oldPorts:       oldPorts,
+		targetTunnelID: targetTunnelID,
+		targetPort:     targetPort,
+		keptNodeIDs:    keptNodeIDs,
+		removedNodeIDs: removedNodeIDs,
+		portAdjusted:   previousPort > 0 && previousPort != targetPort,
+	}, nil
+}
+
+func (h *Handler) executeTunnelDeleteForwardMigrations(plans []tunnelForwardMigrationPlan) ([]string, error, batchFailureDetail) {
+	warnings := make([]string, 0)
+	completed := make([]tunnelForwardMigrationPlan, 0, len(plans))
+
+	for _, plan := range plans {
+		migrationWarnings, err := h.applyTunnelDeleteForwardMigration(plan)
+		if err != nil {
+			h.rollbackTunnelForwardMigrationPlans(completed)
+			return warnings, err, batchFailureDetail{ID: plan.forward.ID, Name: plan.forward.Name, Reason: normalizeBatchFailureReason(errString(err))}
+		}
+		warnings = append(warnings, migrationWarnings...)
+		completed = append(completed, plan)
+	}
+
+	return warnings, nil, batchFailureDetail{}
+}
+
+func (h *Handler) applyTunnelDeleteForwardMigration(plan tunnelForwardMigrationPlan) ([]string, error) {
+	if plan.forward == nil {
+		return nil, errors.New("转发不存在")
+	}
+
+	if err := h.repo.UpdateForwardTunnel(plan.forward.ID, plan.targetTunnelID, time.Now().UnixMilli()); err != nil {
+		return nil, err
+	}
+	if err := h.replaceForwardPorts(plan.forward.ID, plan.targetTunnelID, plan.targetPort, ""); err != nil {
+		h.rollbackForwardMutation(plan.forward, plan.oldPorts)
+		return nil, err
+	}
+
+	updatedForward, err := h.getForwardRecord(plan.forward.ID)
+	if err != nil {
+		h.rollbackForwardMutation(plan.forward, plan.oldPorts)
+		return nil, err
+	}
+
+	warnings := make([]string, 0)
+	if len(plan.keptNodeIDs) > 0 {
+		for _, nodeID := range plan.keptNodeIDs {
+			if delErr := h.deleteForwardServicesOnNodeBatch(plan.forward, nodeID); delErr != nil {
+				nodeLabel := fmt.Sprintf("%d", nodeID)
+				if n, nErr := h.getNodeRecord(nodeID); nErr == nil && n != nil && strings.TrimSpace(n.Name) != "" {
+					nodeLabel = strings.TrimSpace(n.Name)
+				}
+				warnings = append(warnings, fmt.Sprintf("节点 %s 清理旧转发监听失败: %v", nodeLabel, delErr))
+			}
+		}
+		time.Sleep(tunnelServiceBindRetryDelay)
+	}
+
+	syncWarnings, err := h.syncForwardServicesWithWarnings(updatedForward, "UpdateService", true)
+	if err != nil {
+		h.rollbackForwardMutation(plan.forward, plan.oldPorts)
+		return nil, err
+	}
+	warnings = append(warnings, syncWarnings...)
+
+	if len(plan.removedNodeIDs) > 0 {
+		for _, nodeID := range plan.removedNodeIDs {
+			if delErr := h.deleteForwardServicesOnNodeBatch(plan.forward, nodeID); delErr != nil {
+				nodeLabel := fmt.Sprintf("%d", nodeID)
+				if n, nErr := h.getNodeRecord(nodeID); nErr == nil && n != nil && strings.TrimSpace(n.Name) != "" {
+					nodeLabel = strings.TrimSpace(n.Name)
+				}
+				warnings = append(warnings, fmt.Sprintf("节点 %s 清理旧隧道残留服务失败: %v", nodeLabel, delErr))
+			}
+		}
+	}
+
+	return warnings, nil
+}
+
+func (h *Handler) rollbackTunnelForwardMigrationPlans(plans []tunnelForwardMigrationPlan) {
+	for i := len(plans) - 1; i >= 0; i-- {
+		plan := plans[i]
+		h.rollbackForwardMutation(plan.forward, plan.oldPorts)
+	}
+}
+
+func (h *Handler) deleteTunnelAndCleanup(tunnelID int64) error {
+	h.cleanupTunnelRuntime(tunnelID)
+	h.cleanupFederationRuntime(tunnelID)
+	if err := h.deleteTunnelByID(tunnelID); err != nil {
+		return err
+	}
+	return nil
+}
+
+func minInt(a, b int) int {
+	if a < b {
+		return a
+	}
+	return b
+}

go-backend/internal/http/handler/tunnel_entry_sqlite_test.go

@@ -0,0 +1,104 @@
+package handler
+
+import (
+	"path/filepath"
+	"testing"
+	"time"
+
+	"go-backend/internal/store/repo"
+)
+
+func TestValidateTunnelEntryPortConflictsForNewEntriesDoesNotBlockOnSQLiteTx(t *testing.T) {
+	r, err := repo.Open(filepath.Join(t.TempDir(), "panel.db"))
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	t.Cleanup(func() {
+		_ = r.Close()
+	})
+	h := &Handler{repo: r}
+	now := time.Now().UnixMilli()
+
+	if err := r.DB().Exec(`
+		INSERT INTO node(name, secret, server_ip, port, created_time, status, tcp_listen_addr, udp_listen_addr, is_remote)
+		VALUES
+			('entry-old', 'secret-old', '10.0.0.1', '12000-12010', ?, 1, '[::]', '[::]', 0),
+			('entry-new', 'secret-new', '10.0.0.2', '12000-12010', ?, 1, '[::]', '[::]', 0)
+	`, now, now).Error; err != nil {
+		t.Fatalf("insert nodes: %v", err)
+	}
+	var oldEntryID, newEntryID int64
+	if err := r.DB().Raw(`SELECT id FROM node WHERE name = 'entry-old'`).Scan(&oldEntryID).Error; err != nil {
+		t.Fatalf("load old entry id: %v", err)
+	}
+	if err := r.DB().Raw(`SELECT id FROM node WHERE name = 'entry-new'`).Scan(&newEntryID).Error; err != nil {
+		t.Fatalf("load new entry id: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, inx, ip_preference)
+		VALUES('sqlite-tunnel', 1, 1, 'tls', 1, ?, ?, 1, 1, '')
+	`, now, now).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	var tunnelID int64
+	if err := r.DB().Raw(`SELECT id FROM tunnel WHERE name = 'sqlite-tunnel'`).Scan(&tunnelID).Error; err != nil {
+		t.Fatalf("load tunnel id: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, inx, protocol)
+		VALUES(?, '1', ?, 1, 'tls')
+	`, tunnelID, oldEntryID).Error; err != nil {
+		t.Fatalf("insert chain_tunnel: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO forward(user_id, user_name, name, tunnel_id, remote_addr, strategy, created_time, updated_time, status, inx)
+		VALUES(1, 'tester', 'forward-a', ?, '127.0.0.1:8080', 'fifo', ?, ?, 1, 1)
+	`, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert forward: %v", err)
+	}
+	var forwardID int64
+	if err := r.DB().Raw(`SELECT id FROM forward WHERE name = 'forward-a'`).Scan(&forwardID).Error; err != nil {
+		t.Fatalf("load forward id: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO forward_port(forward_id, node_id, port)
+		VALUES(?, ?, 12001)
+	`, forwardID, oldEntryID).Error; err != nil {
+		t.Fatalf("insert forward_port: %v", err)
+	}
+
+	tx := r.BeginTx()
+	if tx == nil {
+		t.Fatal("begin tx: nil transaction")
+	}
+	if tx.Error != nil {
+		t.Fatalf("begin tx: %v", tx.Error)
+	}
+
+	errCh := make(chan error, 1)
+	doneCh := make(chan struct{})
+	go func() {
+		defer close(doneCh)
+		errCh <- h.validateTunnelEntryPortConflictsForNewEntriesTx(tx, tunnelID, []int64{oldEntryID}, []int64{oldEntryID, newEntryID})
+	}()
+
+	select {
+	case err := <-errCh:
+		if err != nil {
+			_ = tx.Rollback().Error
+			t.Fatalf("unexpected validation error: %v", err)
+		}
+	case <-time.After(500 * time.Millisecond):
+		_ = tx.Rollback().Error
+		<-doneCh
+		t.Fatal("validation blocked while transaction was open on sqlite")
+	}
+
+	if err := tx.Rollback().Error; err != nil {
+		t.Fatalf("rollback tx: %v", err)
+	}
+}

go-backend/internal/http/handler/tunnel_metrics_ingestion.go

@@ -0,0 +1,120 @@
+package handler
+
+import (
+	"log"
+	"strings"
+	"time"
+
+	"go-backend/internal/store/model"
+)
+
+type tunnelTrafficDelta struct {
+	bytesIn  int64
+	bytesOut int64
+}
+
+func unixMilliBucketMinute(nowMs int64) int64 {
+	if nowMs <= 0 {
+		return 0
+	}
+	const minuteMs = int64(time.Minute / time.Millisecond)
+	return nowMs - (nowMs % minuteMs)
+}
+
+func (h *Handler) recordTunnelMetricsFromFlowItems(nodeID int64, items []flowItem, nowMs int64) {
+	if h == nil || h.repo == nil {
+		return
+	}
+	if nodeID <= 0 || len(items) == 0 {
+		return
+	}
+
+	bucketTs := unixMilliBucketMinute(nowMs)
+	if bucketTs <= 0 {
+		return
+	}
+
+	forwardDeltas := make(map[int64]tunnelTrafficDelta)
+	var skippedParse, skippedZero int
+	for _, item := range items {
+		name := strings.TrimSpace(item.N)
+		if name == "" || name == "web_api" {
+			continue
+		}
+		forwardID, _, _, ok := parseFlowServiceIDs(name)
+		if !ok {
+			skippedParse++
+			continue
+		}
+		if item.D == 0 && item.U == 0 {
+			skippedZero++
+			continue
+		}
+		d := forwardDeltas[forwardID]
+		d.bytesIn += item.D
+		d.bytesOut += item.U
+		forwardDeltas[forwardID] = d
+	}
+	if len(forwardDeltas) == 0 {
+		if len(items) > 0 {
+			log.Printf("monitoring debug op=tunnel_metric.no_forward_deltas node_id=%d items=%d skipped_parse=%d skipped_zero=%d", nodeID, len(items), skippedParse, skippedZero)
+		}
+		return
+	}
+
+	forwardIDs := make([]int64, 0, len(forwardDeltas))
+	for id := range forwardDeltas {
+		forwardIDs = append(forwardIDs, id)
+	}
+
+	forwardTunnelMap, err := h.repo.MapForwardIDsToTunnelIDs(forwardIDs)
+	if err != nil {
+		log.Printf("monitoring write skipped op=tunnel_metric.map_forward_to_tunnel node_id=%d err=%v", nodeID, err)
+		return
+	}
+	if len(forwardTunnelMap) == 0 {
+		log.Printf("monitoring debug op=tunnel_metric.no_tunnel_map node_id=%d forward_ids=%v", nodeID, forwardIDs)
+		return
+	}
+
+	tunnelAgg := make(map[int64]tunnelTrafficDelta)
+	for forwardID, delta := range forwardDeltas {
+		tunnelID := forwardTunnelMap[forwardID]
+		if tunnelID <= 0 {
+			continue
+		}
+		a := tunnelAgg[tunnelID]
+		a.bytesIn += delta.bytesIn
+		a.bytesOut += delta.bytesOut
+		tunnelAgg[tunnelID] = a
+	}
+	if len(tunnelAgg) == 0 {
+		return
+	}
+
+	metrics := make([]*model.TunnelMetric, 0, len(tunnelAgg))
+	for tunnelID, delta := range tunnelAgg {
+		if delta.bytesIn == 0 && delta.bytesOut == 0 {
+			continue
+		}
+		metrics = append(metrics, &model.TunnelMetric{
+			TunnelID:     tunnelID,
+			NodeID:       nodeID,
+			Timestamp:    bucketTs,
+			BytesIn:      delta.bytesIn,
+			BytesOut:     delta.bytesOut,
+			Connections:  0,
+			Errors:       0,
+			AvgLatencyMs: 0,
+		})
+	}
+	if len(metrics) == 0 {
+		return
+	}
+
+	if err := h.repo.UpsertTunnelMetricBuckets(metrics); err != nil {
+		log.Printf("monitoring write failed op=tunnel_metric.upsert_buckets node_id=%d bucket_ts=%d count=%d err=%v", nodeID, bucketTs, len(metrics), err)
+	} else {
+		log.Printf("monitoring ok op=tunnel_metric.upsert_buckets node_id=%d bucket_ts=%d count=%d", nodeID, bucketTs, len(metrics))
+	}
+}

go-backend/internal/http/handler/tunnel_quality_prober.go

@@ -0,0 +1,452 @@
+package handler
+
+import (
+	"context"
+	"encoding/json"
+	"log"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	"go-backend/internal/store/model"
+)
+
+const (
+	tunnelQualityProbeInterval  = 1 * time.Second
+	tunnelQualityProbeTimeout   = 8 * time.Second
+	tunnelQualityPingTimeoutMs  = 5000
+	tunnelQualityRetention      = 24 * time.Hour // keep 24h of history
+	tunnelQualityPruneInterval  = 10 * time.Minute
+	tunnelQualityReportInterval = 30 * time.Second // DB save interval
+)
+
+type TunnelQualityHop struct {
+	FromNodeID   int64   `json:"fromNodeId"`
+	FromNodeName string  `json:"fromNodeName"`
+	ToNodeID     int64   `json:"toNodeId"`
+	ToNodeName   string  `json:"toNodeName"`
+	Latency      float64 `json:"latency"`
+	Loss         float64 `json:"loss"`
+	TargetIP     string  `json:"targetIp,omitempty"`
+	TargetPort   int     `json:"targetPort,omitempty"`
+}
+
+// tunnelQualitySnapshot is the in-memory latest probe result for a tunnel.
+type tunnelQualitySnapshot struct {
+	TunnelID           int64   `json:"tunnelId"`
+	EntryToExitLatency float64 `json:"entryToExitLatency"`
+	ExitToBingLatency  float64 `json:"exitToBingLatency"`
+	EntryToExitLoss    float64 `json:"entryToExitLoss"`
+	ExitToBingLoss     float64 `json:"exitToBingLoss"`
+	Success            bool    `json:"success"`
+	ErrorMessage       string  `json:"errorMessage,omitempty"`
+	Timestamp          int64   `json:"timestamp"`
+	ChainDetails       string  `json:"chainDetails,omitempty"`
+
+	// internal fields for db reporting
+	lastDBWrite int64 `json:"-"`
+}
+
+// tunnelQualityProber runs periodic TCP ping probes against all enabled tunnels.
+// Design mirrors health.Checker: background goroutine with worker pool + scheduled cleanup.
+type tunnelQualityProber struct {
+	handler   *Handler
+	cache     sync.Map // tunnelID (int64) → *tunnelQualitySnapshot
+	ctx       context.Context
+	cancel    context.CancelFunc
+	interval  time.Duration
+	lastPrune int64
+	probing   int32 // atomic flag: 1 = probeAll running, 0 = idle
+}
+
+// newTunnelQualityProber creates a new prober (not yet running).
+func newTunnelQualityProber(h *Handler) *tunnelQualityProber {
+	return &tunnelQualityProber{
+		handler:  h,
+		interval: tunnelQualityProbeInterval,
+	}
+}
+
+// Start launches the background probe loop (call from jobs.go).
+func (p *tunnelQualityProber) Start(ctx context.Context) {
+	// Use the provided context so we stop with other background jobs.
+	p.ctx, p.cancel = context.WithCancel(ctx)
+	p.loop()
+}
+
+// Stop halts the background probe loop.
+func (p *tunnelQualityProber) Stop() {
+	if p == nil || p.cancel == nil {
+		return
+	}
+
+	p.cancel()
+}
+
+// GetAll returns all cached quality snapshots (latest per tunnel).
+func (p *tunnelQualityProber) GetAll() []tunnelQualitySnapshot {
+	var items []tunnelQualitySnapshot
+	p.cache.Range(func(_, value interface{}) bool {
+		if snap, ok := value.(*tunnelQualitySnapshot); ok {
+			items = append(items, *snap)
+		}
+		return true
+	})
+	return items
+}
+
+func (p *tunnelQualityProber) loop() {
+	// Initial delay to let the system boot up
+	select {
+	case <-time.After(5 * time.Second):
+	case <-p.ctx.Done():
+		return
+	}
+
+	// Run once immediately
+	p.probeAll()
+
+	ticker := time.NewTicker(p.interval)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-p.ctx.Done():
+			return
+		case <-ticker.C:
+			p.probeAll()
+			p.maybePrune()
+		}
+	}
+}
+
+func (p *tunnelQualityProber) isEnabled() bool {
+	if p == nil || p.handler == nil {
+		return true
+	}
+
+	return p.handler.isTunnelQualityMonitoringEnabled()
+}
+
+// maybePrune deletes old quality rows periodically (mirrors PruneServiceMonitorResults).
+func (p *tunnelQualityProber) maybePrune() {
+	if !p.isEnabled() {
+		return
+	}
+
+	now := time.Now().UnixMilli()
+	if p.lastPrune > 0 && now-p.lastPrune < int64(tunnelQualityPruneInterval/time.Millisecond) {
+		return
+	}
+	p.lastPrune = now
+
+	h := p.handler
+	if h == nil || h.repo == nil {
+		return
+	}
+
+	cutoff := now - int64(tunnelQualityRetention/time.Millisecond)
+	if err := h.repo.PruneTunnelQualityResults(cutoff); err != nil {
+		log.Printf("tunnel_quality_prober: prune err=%v", err)
+	}
+}
+
+func (p *tunnelQualityProber) probeAll() {
+	if !p.isEnabled() {
+		return
+	}
+
+	// Skip if previous probe round is still running (interval < timeout guard)
+	if !atomic.CompareAndSwapInt32(&p.probing, 0, 1) {
+		return
+	}
+	defer atomic.StoreInt32(&p.probing, 0)
+
+	h := p.handler
+	if h == nil || h.repo == nil {
+		return
+	}
+
+	tunnelIDs, err := h.repo.ListEnabledTunnelIDs()
+	if err != nil {
+		log.Printf("tunnel_quality_prober: list enabled tunnels err=%v", err)
+		return
+	}
+	if len(tunnelIDs) == 0 {
+		return
+	}
+
+	// Probe tunnels concurrently with a worker limit
+	// (mirrors health.Checker worker pool pattern)
+	const maxWorkers = 20
+	sem := make(chan struct{}, maxWorkers)
+	var wg sync.WaitGroup
+
+	for _, tunnelID := range tunnelIDs {
+		select {
+		case <-p.ctx.Done():
+			return
+		default:
+		}
+
+		wg.Add(1)
+		sem <- struct{}{}
+		go func(tid int64) {
+			defer wg.Done()
+			defer func() { <-sem }()
+			p.probeTunnel(tid)
+		}(tunnelID)
+	}
+	wg.Wait()
+}
+
+func (p *tunnelQualityProber) probeTunnel(tunnelID int64) {
+	h := p.handler
+	if h == nil || h.repo == nil {
+		return
+	}
+
+	now := time.Now().UnixMilli()
+	snap := &tunnelQualitySnapshot{
+		TunnelID:  tunnelID,
+		Timestamp: now,
+	}
+
+	// Get tunnel chain info
+	tunnel, err := h.getTunnelRecord(tunnelID)
+	if err != nil {
+		snap.ErrorMessage = "隧道不存在"
+		p.storeResult(snap)
+		return
+	}
+
+	chainRows, err := h.listChainNodesForTunnel(tunnelID)
+	if err != nil || len(chainRows) == 0 {
+		snap.ErrorMessage = "隧道配置不完整"
+		p.storeResult(snap)
+		return
+	}
+
+	ipPreference := h.repo.GetTunnelIPPreference(tunnelID)
+	inNodes, midNodesGrouped, outNodes := splitChainNodeGroups(chainRows)
+
+	options := diagnosisExecOptions{
+		commandTimeout: tunnelQualityProbeTimeout,
+		pingTimeoutMS:  tunnelQualityPingTimeoutMs,
+		timeoutMessage: "探测超时",
+	}
+
+	switch tunnel.Type {
+	case 1:
+		// Port forwarding: entry → Bing only
+		if len(inNodes) > 0 {
+			lat, loss, err := p.tcpPingNode(inNodes[0].NodeID, "www.bing.com", 443, options)
+			if err == nil {
+				snap.ExitToBingLatency = lat
+				snap.ExitToBingLoss = loss
+				snap.Success = true
+			} else {
+				snap.ErrorMessage = err.Error()
+			}
+		}
+	case 2:
+		// Tunnel forwarding: entry → exit + exit → Bing
+		probeOK := true
+
+		if len(inNodes) > 0 && len(outNodes) > 0 {
+			var hops []TunnelQualityHop
+			var totalLat float64
+			remainingSuccessProb := 1.0
+
+			nodesInPath := make([]chainNodeRecord, 0, 2+len(midNodesGrouped))
+			nodesInPath = append(nodesInPath, inNodes[0])
+			for _, midGroup := range midNodesGrouped {
+				if len(midGroup) > 0 {
+					nodesInPath = append(nodesInPath, midGroup[0])
+				}
+			}
+			nodesInPath = append(nodesInPath, outNodes[0])
+
+			for i := 0; i < len(nodesInPath)-1; i++ {
+				source := nodesInPath[i]
+				target := nodesInPath[i+1]
+
+				hop := TunnelQualityHop{
+					FromNodeID:   source.NodeID,
+					FromNodeName: source.NodeName,
+					ToNodeID:     target.NodeID,
+					ToNodeName:   target.NodeName,
+				}
+
+				targetNode, nodeErr := h.getNodeRecord(target.NodeID)
+				if nodeErr != nil || targetNode == nil {
+					snap.ErrorMessage = "节点 " + target.NodeName + " 不可用"
+					probeOK = false
+					hop.Latency = -1
+					hop.Loss = 100
+					hops = append(hops, hop)
+					break
+				}
+				
+				fromNode, _ := h.getNodeRecord(source.NodeID)
+				targetIP, targetPort, resolveErr := resolveChainProbeTarget(fromNode, targetNode, target.Port, ipPreference, target.ConnectIP)
+				if resolveErr != nil {
+					snap.ErrorMessage = "解析节点 " + target.NodeName + " 失败: " + resolveErr.Error()
+					probeOK = false
+					hop.Latency = -1
+					hop.Loss = 100
+					hops = append(hops, hop)
+					break
+				}
+
+				hop.TargetIP = targetIP
+				hop.TargetPort = targetPort
+
+				lat, loss, err := p.tcpPingNode(source.NodeID, targetIP, targetPort, options)
+				if err == nil {
+					hop.Latency = lat
+					hop.Loss = loss
+					totalLat += lat
+					remainingSuccessProb *= (1.0 - loss/100.0)
+					hops = append(hops, hop)
+				} else {
+					probeOK = false
+					hop.Latency = -1
+					hop.Loss = 100
+					hops = append(hops, hop)
+					if snap.ErrorMessage == "" {
+						snap.ErrorMessage = err.Error()
+					}
+					break
+				}
+			}
+
+			if probeOK {
+				snap.EntryToExitLatency = totalLat
+				snap.EntryToExitLoss = (1.0 - remainingSuccessProb) * 100.0
+			} else {
+				snap.EntryToExitLatency = -1
+				snap.EntryToExitLoss = 100
+			}
+
+			if len(hops) > 0 {
+				if b, err := json.Marshal(hops); err == nil {
+					snap.ChainDetails = string(b)
+				}
+			}
+		}
+
+		// Exit → Bing
+		if len(outNodes) > 0 {
+			lat, loss, err := p.tcpPingNode(outNodes[0].NodeID, "www.bing.com", 443, options)
+			if err == nil {
+				snap.ExitToBingLatency = lat
+				snap.ExitToBingLoss = loss
+			} else {
+				if snap.ErrorMessage == "" {
+					snap.ErrorMessage = err.Error()
+				}
+				probeOK = false
+			}
+		}
+
+		snap.Success = probeOK
+	default:
+		// Unknown type: entry → Bing
+		if len(inNodes) > 0 {
+			lat, loss, err := p.tcpPingNode(inNodes[0].NodeID, "www.bing.com", 443, options)
+			if err == nil {
+				snap.ExitToBingLatency = lat
+				snap.ExitToBingLoss = loss
+				snap.Success = true
+			} else {
+				snap.ErrorMessage = err.Error()
+			}
+		}
+	}
+
+	p.storeResult(snap)
+}
+
+func (p *tunnelQualityProber) tcpPingNode(nodeID int64, ip string, port int, options diagnosisExecOptions) (latency float64, loss float64, err error) {
+	h := p.handler
+	if h == nil {
+		return 0, 100, nil
+	}
+
+	node, nodeErr := h.getNodeRecord(nodeID)
+	if nodeErr != nil {
+		return 0, 100, nodeErr
+	}
+
+	var pingData map[string]interface{}
+	var pingErr error
+	if node != nil && node.IsRemote == 1 {
+		pingData, pingErr = h.tcpPingViaRemoteNode(node, ip, port, options)
+	} else {
+		pingData, pingErr = h.tcpPingViaNode(nodeID, ip, port, options)
+	}
+	if pingErr != nil {
+		return 0, 100, pingErr
+	}
+
+	avgTime := asFloat(pingData["averageTime"], 0)
+	packetLoss := asFloat(pingData["packetLoss"], 100)
+
+	return avgTime, packetLoss, nil
+}
+
+func (p *tunnelQualityProber) storeResult(snap *tunnelQualitySnapshot) {
+	if snap == nil {
+		return
+	}
+
+	// Update in-memory cache (latest per tunnel)
+	// Retain the lastDBWrite timestamp if it exists, so we only DB write every 30s
+	var lastWrite int64
+	if existing, ok := p.cache.Load(snap.TunnelID); ok {
+		if eg, ok := existing.(*tunnelQualitySnapshot); ok {
+			lastWrite = eg.lastDBWrite
+		}
+	}
+	snap.lastDBWrite = lastWrite
+
+	now := time.Now().UnixMilli()
+	writeToDB := false
+	if now-snap.lastDBWrite >= int64(tunnelQualityReportInterval/time.Millisecond) {
+		writeToDB = true
+		snap.lastDBWrite = now
+	}
+
+	p.cache.Store(snap.TunnelID, snap)
+
+	if !writeToDB {
+		return
+	}
+
+	// Persist to database (history)
+	h := p.handler
+	if h == nil || h.repo == nil {
+		return
+	}
+
+	successInt := 0
+	if snap.Success {
+		successInt = 1
+	}
+
+	q := &model.TunnelQuality{
+		TunnelID:           snap.TunnelID,
+		EntryToExitLatency: snap.EntryToExitLatency,
+		ExitToBingLatency:  snap.ExitToBingLatency,
+		EntryToExitLoss:    snap.EntryToExitLoss,
+		ExitToBingLoss:     snap.ExitToBingLoss,
+		Success:            successInt,
+		ErrorMessage:       snap.ErrorMessage,
+		Timestamp:          snap.Timestamp,
+		ChainDetails:       snap.ChainDetails,
+	}
+	if err := h.repo.InsertTunnelQuality(q); err != nil {
+		log.Printf("tunnel_quality_prober: insert db err=%v tunnel_id=%d", err, snap.TunnelID)
+	}
+}

go-backend/internal/http/handler/upgrade.go

@@ -0,0 +1,407 @@
+package handler
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"regexp"
+	"strings"
+	"sync"
+	"time"
+
+	"go-backend/internal/http/response"
+)
+
+const (
+	githubRepo     = "Sagit-chu/flvx"
+	githubProxy    = "https://gcode.hostcentral.cc"
+	githubAPIBase  = "https://api.github.com"
+	githubHTMLBase = "https://github.com"
+	upgradeTimeout = 5 * time.Minute
+	batchWorkers   = 5
+
+	releaseChannelStable = "stable"
+	releaseChannelDev    = "dev"
+)
+
+var (
+	stableVersionPattern = regexp.MustCompile(`^\d+(?:\.\d+)+$`)
+	testKeywordPattern   = regexp.MustCompile(`(?i)(alpha|beta|rc)`)
+)
+
+type githubRelease struct {
+	TagName     string `json:"tag_name"`
+	Name        string `json:"name"`
+	PublishedAt string `json:"published_at"`
+	Prerelease  bool   `json:"prerelease"`
+	Draft       bool   `json:"draft"`
+}
+
+func normalizeReleaseChannel(channel string) string {
+	switch strings.ToLower(strings.TrimSpace(channel)) {
+	case releaseChannelDev:
+		return releaseChannelDev
+	default:
+		return releaseChannelStable
+	}
+}
+
+func releaseChannelFromTag(tag string) string {
+	normalized := strings.ToLower(strings.TrimSpace(tag))
+	if normalized == "" {
+		return releaseChannelDev
+	}
+	if testKeywordPattern.MatchString(normalized) {
+		return releaseChannelDev
+	}
+	if stableVersionPattern.MatchString(normalized) {
+		return releaseChannelStable
+	}
+
+	return releaseChannelDev
+}
+
+func releaseChannelLabel(channel string) string {
+	if normalizeReleaseChannel(channel) == releaseChannelDev {
+		return "测试版"
+	}
+
+	return "正式版"
+}
+
+func fetchGitHubReleases(perPage int) ([]githubRelease, error) {
+	if perPage <= 0 {
+		perPage = 20
+	}
+
+	client := &http.Client{Timeout: 15 * time.Second}
+	resp, err := client.Get(fmt.Sprintf("%s/repos/%s/releases?per_page=%d", githubAPIBase, githubRepo, perPage))
+	if err != nil {
+		return nil, fmt.Errorf("请求GitHub API失败: %v", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		body, _ := io.ReadAll(io.LimitReader(resp.Body, 512))
+		return nil, fmt.Errorf("GitHub API返回 %d: %s", resp.StatusCode, string(body))
+	}
+
+	var releases []githubRelease
+	if err := json.NewDecoder(resp.Body).Decode(&releases); err != nil {
+		return nil, fmt.Errorf("解析GitHub API响应失败: %v", err)
+	}
+
+	return releases, nil
+}
+
+func resolveLatestReleaseByChannel(channel string) (string, error) {
+	normalizedChannel := normalizeReleaseChannel(channel)
+	releases, err := fetchGitHubReleases(50)
+	if err != nil {
+		return "", err
+	}
+
+	for _, r := range releases {
+		if r.Draft {
+			continue
+		}
+		tag := strings.TrimSpace(r.TagName)
+		if tag == "" {
+			continue
+		}
+		if releaseChannelFromTag(tag) == normalizedChannel {
+			return tag, nil
+		}
+	}
+
+	return "", fmt.Errorf("未找到%s版本号", releaseChannelLabel(normalizedChannel))
+}
+
+func (h *Handler) nodeUpgrade(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+
+	var req struct {
+		ID      int64  `json:"id"`
+		Version string `json:"version"`
+		Channel string `json:"channel"`
+	}
+	if err := decodeJSON(r.Body, &req); err != nil {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+	if req.ID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("节点ID无效"))
+		return
+	}
+
+	channel := normalizeReleaseChannel(req.Channel)
+	version := strings.TrimSpace(req.Version)
+	if version == "" {
+		var err error
+		version, err = resolveLatestReleaseByChannel(channel)
+		if err != nil {
+			response.WriteJSON(w, response.Err(-2, fmt.Sprintf("获取最新%s失败: %v", releaseChannelLabel(channel), err)))
+			return
+		}
+	}
+
+	downloadURL := fmt.Sprintf(
+		githubProxy+"/%s/%s/releases/download/%s/gost-{ARCH}",
+		githubHTMLBase, githubRepo, version,
+	)
+	checksumURL := fmt.Sprintf(
+		githubProxy+"/%s/%s/releases/download/%s/gost-{ARCH}.sha256",
+		githubHTMLBase, githubRepo, version,
+	)
+
+	result, err := h.wsServer.SendCommand(req.ID, "UpgradeAgent", map[string]interface{}{
+		"downloadUrl": downloadURL,
+		"checksumUrl": checksumURL,
+	}, upgradeTimeout)
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, fmt.Sprintf("升级失败: %v", err)))
+		return
+	}
+	h.markNodePendingUpgradeRedeploy(req.ID)
+
+	response.WriteJSON(w, response.OK(map[string]interface{}{
+		"version": version,
+		"message": result.Message,
+	}))
+}
+
+func resolveLatestRelease() (string, error) {
+	return resolveLatestReleaseByChannel(releaseChannelStable)
+}
+
+func resolveLatestReleaseAPI() (string, error) {
+	return resolveLatestReleaseByChannel(releaseChannelStable)
+}
+
+func (h *Handler) nodeBatchUpgrade(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+
+	var req struct {
+		IDs     []int64 `json:"ids"`
+		Version string  `json:"version"`
+		Channel string  `json:"channel"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+	if len(req.IDs) == 0 {
+		response.WriteJSON(w, response.ErrDefault("ids不能为空"))
+		return
+	}
+
+	channel := normalizeReleaseChannel(req.Channel)
+	version := strings.TrimSpace(req.Version)
+	if version == "" {
+		var err error
+		version, err = resolveLatestReleaseByChannel(channel)
+		if err != nil {
+			response.WriteJSON(w, response.Err(-2, fmt.Sprintf("获取最新%s失败: %v", releaseChannelLabel(channel), err)))
+			return
+		}
+	}
+
+	downloadURL := fmt.Sprintf(
+		githubProxy+"/%s/%s/releases/download/%s/gost-{ARCH}",
+		githubHTMLBase, githubRepo, version,
+	)
+	checksumURL := fmt.Sprintf(
+		githubProxy+"/%s/%s/releases/download/%s/gost-{ARCH}.sha256",
+		githubHTMLBase, githubRepo, version,
+	)
+
+	type upgradeResult struct {
+		ID      int64  `json:"id"`
+		Success bool   `json:"success"`
+		Message string `json:"message"`
+	}
+
+	results := make([]upgradeResult, len(req.IDs))
+	sem := make(chan struct{}, batchWorkers)
+	var wg sync.WaitGroup
+
+	for i, id := range req.IDs {
+		wg.Add(1)
+		go func(index int, nodeID int64) {
+			defer wg.Done()
+			sem <- struct{}{}
+			defer func() { <-sem }()
+
+			result, err := h.wsServer.SendCommand(nodeID, "UpgradeAgent", map[string]interface{}{
+				"downloadUrl": downloadURL,
+				"checksumUrl": checksumURL,
+			}, upgradeTimeout)
+			if err != nil {
+				results[index] = upgradeResult{ID: nodeID, Success: false, Message: err.Error()}
+				return
+			}
+			h.markNodePendingUpgradeRedeploy(nodeID)
+			results[index] = upgradeResult{ID: nodeID, Success: true, Message: result.Message}
+		}(i, id)
+	}
+	wg.Wait()
+
+	response.WriteJSON(w, response.OK(map[string]interface{}{
+		"version": version,
+		"results": results,
+	}))
+}
+
+func (h *Handler) listReleases(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+
+	var req struct {
+		Channel string `json:"channel"`
+	}
+	if err := decodeJSON(r.Body, &req); err != nil && err != io.EOF {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+
+	channel := normalizeReleaseChannel(req.Channel)
+
+	releases, err := fetchGitHubReleases(50)
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, fmt.Sprintf("获取版本列表失败: %v", err)))
+		return
+	}
+
+	type releaseItem struct {
+		Version     string `json:"version"`
+		Name        string `json:"name"`
+		PublishedAt string `json:"publishedAt"`
+		Prerelease  bool   `json:"prerelease"`
+		Channel     string `json:"channel"`
+	}
+
+	items := make([]releaseItem, 0, len(releases))
+	for _, r := range releases {
+		if r.Draft {
+			continue
+		}
+		tag := strings.TrimSpace(r.TagName)
+		if tag == "" {
+			continue
+		}
+		itemChannel := releaseChannelFromTag(tag)
+		if itemChannel != channel {
+			continue
+		}
+		items = append(items, releaseItem{
+			Version:     tag,
+			Name:        r.Name,
+			PublishedAt: r.PublishedAt,
+			Prerelease:  itemChannel == releaseChannelDev,
+			Channel:     itemChannel,
+		})
+	}
+
+	response.WriteJSON(w, response.OK(items))
+}
+
+func (h *Handler) nodeRollback(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+
+	var req struct {
+		ID int64 `json:"id"`
+	}
+	if err := decodeJSON(r.Body, &req); err != nil {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+	if req.ID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("节点ID无效"))
+		return
+	}
+
+	result, err := h.wsServer.SendCommand(req.ID, "RollbackAgent", map[string]interface{}{}, 30*time.Second)
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, fmt.Sprintf("回退失败: %v", err)))
+		return
+	}
+
+	response.WriteJSON(w, response.OK(map[string]interface{}{
+		"message": result.Message,
+	}))
+}
+
+func (h *Handler) markNodePendingUpgradeRedeploy(nodeID int64) {
+	if h == nil || nodeID <= 0 {
+		return
+	}
+	h.upgradeMu.Lock()
+	h.pendingUpgradeRedeploy[nodeID] = struct{}{}
+	h.upgradeMu.Unlock()
+}
+
+func (h *Handler) consumeNodePendingUpgradeRedeploy(nodeID int64) bool {
+	if h == nil || nodeID <= 0 {
+		return false
+	}
+	h.upgradeMu.Lock()
+	_, ok := h.pendingUpgradeRedeploy[nodeID]
+	if ok {
+		delete(h.pendingUpgradeRedeploy, nodeID)
+	}
+	h.upgradeMu.Unlock()
+	return ok
+}
+
+func (h *Handler) onNodeOnline(nodeID int64) {
+	if !h.consumeNodePendingUpgradeRedeploy(nodeID) {
+		return
+	}
+	h.redeployNodeRuntimeAfterUpgrade(nodeID)
+}
+
+func (h *Handler) redeployNodeRuntimeAfterUpgrade(nodeID int64) {
+	tunnelIDs, err := h.repo.ListActiveTunnelIDsByNode(nodeID)
+	if err != nil {
+		fmt.Printf("post-upgrade redeploy: list tunnels for node %d failed: %v\n", nodeID, err)
+		return
+	}
+	forwardIDs, err := h.repo.ListActiveForwardIDsByNode(nodeID)
+	if err != nil {
+		fmt.Printf("post-upgrade redeploy: list forwards for node %d failed: %v\n", nodeID, err)
+		return
+	}
+
+	tunnelFailed := make(map[int64]struct{})
+	for _, tunnelID := range tunnelIDs {
+		if err := h.redeployTunnelAndForwards(tunnelID); err != nil {
+			tunnelFailed[tunnelID] = struct{}{}
+			fmt.Printf("post-upgrade redeploy: tunnel %d failed on node %d: %v\n", tunnelID, nodeID, err)
+		}
+	}
+
+	for _, forwardID := range forwardIDs {
+		forward, getErr := h.getForwardRecord(forwardID)
+		if getErr != nil || forward == nil {
+			continue
+		}
+		if _, skipped := tunnelFailed[forward.TunnelID]; skipped {
+			continue
+		}
+		if err := h.syncForwardServices(forward, "UpdateService", true); err != nil {
+			fmt.Printf("post-upgrade redeploy: forward %d failed on node %d: %v\n", forwardID, nodeID, err)
+		}
+	}
+}

go-backend/internal/http/handler/upgrade_release_channel_test.go

@@ -0,0 +1,46 @@
+package handler
+
+import "testing"
+
+func TestReleaseChannelFromTag(t *testing.T) {
+	tests := []struct {
+		name    string
+		tag     string
+		expects string
+	}{
+		{name: "stable semantic version", tag: "2.1.4", expects: releaseChannelStable},
+		{name: "v prefix should be dev", tag: "v2.1.4", expects: releaseChannelDev},
+		{name: "rc release", tag: "2.1.4-rc2", expects: releaseChannelDev},
+		{name: "beta release", tag: "2.1.4-beta.1", expects: releaseChannelDev},
+		{name: "alpha release", tag: "2.1.4-alpha", expects: releaseChannelDev},
+		{name: "non numeric tag", tag: "nightly", expects: releaseChannelDev},
+		{name: "empty tag", tag: "", expects: releaseChannelDev},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			if got := releaseChannelFromTag(tc.tag); got != tc.expects {
+				t.Fatalf("releaseChannelFromTag(%q) = %q, want %q", tc.tag, got, tc.expects)
+			}
+		})
+	}
+}
+
+func TestNormalizeReleaseChannel(t *testing.T) {
+	tests := []struct {
+		input   string
+		expects string
+	}{
+		{input: "", expects: releaseChannelStable},
+		{input: "stable", expects: releaseChannelStable},
+		{input: "dev", expects: releaseChannelDev},
+		{input: "DEV", expects: releaseChannelDev},
+		{input: "preview", expects: releaseChannelStable},
+	}
+
+	for _, tc := range tests {
+		if got := normalizeReleaseChannel(tc.input); got != tc.expects {
+			t.Fatalf("normalizeReleaseChannel(%q) = %q, want %q", tc.input, got, tc.expects)
+		}
+	}
+}

go-backend/internal/http/handler/user_quota.go

@@ -0,0 +1,139 @@
+package handler
+
+import (
+	"errors"
+	"net/http"
+	"time"
+
+	"go-backend/internal/http/response"
+	"go-backend/internal/store/model"
+	"go-backend/internal/store/repo"
+)
+
+func isUserQuotaExceeded(view *model.UserQuotaView) bool {
+	if view == nil {
+		return false
+	}
+	if view.DailyLimitGB > 0 && view.DailyUsedBytes >= view.DailyLimitGB*bytesPerGB {
+		return true
+	}
+	if view.MonthlyLimitGB > 0 && view.MonthlyUsedBytes >= view.MonthlyLimitGB*bytesPerGB {
+		return true
+	}
+	return false
+}
+
+func (h *Handler) userQuotaBlockReason(userID int64, now int64) (string, error) {
+	if h == nil || h.repo == nil || userID <= 0 {
+		return "", nil
+	}
+	quota, err := h.repo.GetUserQuotaView(userID, time.UnixMilli(now))
+	if err != nil || quota == nil {
+		return "", err
+	}
+	if quota.DisabledByQuota == 1 || isUserQuotaExceeded(quota) {
+		return "该用户流量配额已超额，禁止开启转发", nil
+	}
+	return "", nil
+}
+
+func (h *Handler) enforceUserQuotaIfNeeded(userID int64, quota *model.UserQuotaView) {
+	if h == nil || h.repo == nil || userID <= 0 || quota == nil {
+		return
+	}
+	if quota.DisabledByQuota == 1 || !isUserQuotaExceeded(quota) {
+		return
+	}
+
+	forwards, err := h.listActiveForwardsByUser(userID)
+	if err != nil {
+		return
+	}
+	pausedIDs := make([]int64, 0, len(forwards))
+	now := time.Now().UnixMilli()
+	for i := range forwards {
+		forward := &forwards[i]
+		if forward.Status != 1 {
+			continue
+		}
+		if err := h.controlForwardServices(forward, "PauseService", false); err != nil {
+			continue
+		}
+		if err := h.repo.UpdateForwardStatus(forward.ID, 0, now); err != nil {
+			continue
+		}
+		pausedIDs = append(pausedIDs, forward.ID)
+	}
+	_ = h.repo.MarkUserQuotaDisabled(userID, pausedIDs, now)
+}
+
+func (h *Handler) applyUserQuotaRelease(release *repo.UserQuotaRelease, now int64) {
+	if h == nil || h.repo == nil || release == nil || release.UserID <= 0 || !release.UnblockUser {
+		return
+	}
+	for _, forwardID := range release.ForwardIDs {
+		forward, err := h.getForwardRecord(forwardID)
+		if err != nil || forward == nil {
+			continue
+		}
+		if err := h.ensureUserTunnelForwardAllowed(forward.UserID, forward.TunnelID, now); err != nil {
+			continue
+		}
+		if err := h.controlForwardServices(forward, "ResumeService", false); err != nil {
+			continue
+		}
+		_ = h.repo.UpdateForwardStatus(forwardID, 1, now)
+	}
+}
+
+func (h *Handler) resetUserQuotaWindows(now time.Time) {
+	if h == nil || h.repo == nil {
+		return
+	}
+	releases, err := h.repo.RollUserQuotaWindows(now)
+	if err != nil {
+		return
+	}
+	nowMs := now.UnixMilli()
+	for i := range releases {
+		h.applyUserQuotaRelease(&releases[i], nowMs)
+	}
+}
+
+func (h *Handler) userQuotaReset(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	var req struct {
+		UserID int64  `json:"userId"`
+		Scope  string `json:"scope"`
+	}
+	if err := decodeJSON(r.Body, &req); err != nil {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+	if req.UserID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("用户ID不能为空"))
+		return
+	}
+	release, err := h.repo.ResetUserQuotaUsage(req.UserID, req.Scope, time.Now())
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+	nowMs := time.Now().UnixMilli()
+	h.applyUserQuotaRelease(release, nowMs)
+	response.WriteJSON(w, response.OKEmpty())
+}
+
+func (h *Handler) ensureUserForwardAllowedByQuota(userID int64, now int64) error {
+	reason, err := h.userQuotaBlockReason(userID, now)
+	if err != nil {
+		return err
+	}
+	if reason != "" {
+		return errors.New(reason)
+	}
+	return nil
+}

go-backend/internal/http/middleware/auth.go

@@ -0,0 +1,149 @@
+package middleware
+
+import (
+	"context"
+	"net/http"
+	"strings"
+
+	"go-backend/internal/auth"
+	"go-backend/internal/http/response"
+)
+
+type contextKey string
+
+const ClaimsContextKey contextKey = "claims"
+
+type AuthOptions struct {
+	JWTSecret string
+}
+
+func JWT(opts AuthOptions) func(http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			if shouldSkip(r.URL.Path) {
+				next.ServeHTTP(w, r)
+				return
+			}
+
+			if !strings.HasPrefix(r.URL.Path, "/api/") {
+				next.ServeHTTP(w, r)
+				return
+			}
+
+			token := strings.TrimSpace(r.Header.Get("Authorization"))
+			if token == "" {
+				response.WriteJSON(w, response.Err(401, "未登录或token已过期"))
+				return
+			}
+
+			claims, ok := auth.ValidateToken(token, opts.JWTSecret)
+			if !ok {
+				response.WriteJSON(w, response.Err(401, "无效的token或token已过期"))
+				return
+			}
+
+			if requiresAdmin(r.URL.Path) && claims.RoleID != 0 {
+				response.WriteJSON(w, response.Err(403, "权限不足，仅管理员可操作"))
+				return
+			}
+
+			ctx := context.WithValue(r.Context(), ClaimsContextKey, claims)
+			next.ServeHTTP(w, r.WithContext(ctx))
+		})
+	}
+}
+
+func RequireAdmin(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		raw := r.Context().Value(ClaimsContextKey)
+		claims, ok := raw.(auth.Claims)
+		if !ok {
+			response.WriteJSON(w, response.Err(401, "无法获取用户权限信息"))
+			return
+		}
+		if claims.RoleID != 0 {
+			response.WriteJSON(w, response.Err(403, "权限不足，仅管理员可操作"))
+			return
+		}
+		next.ServeHTTP(w, r)
+	})
+}
+
+func shouldSkip(path string) bool {
+	switch {
+	case strings.HasPrefix(path, "/flow/"):
+		return true
+	case strings.HasPrefix(path, "/api/v1/open_api/"):
+		return true
+	case strings.HasPrefix(path, "/api/v1/captcha/"):
+		return true
+	case path == "/api/v1/config/get":
+		return true
+	case path == "/api/v1/user/login":
+		return true
+	case path == "/api/v1/federation/connect":
+		return true
+	case path == "/api/v1/federation/tunnel/create":
+		return true
+	case path == "/api/v1/federation/runtime/reserve-port":
+		return true
+	case path == "/api/v1/federation/runtime/apply-role":
+		return true
+	case path == "/api/v1/federation/runtime/release-role":
+		return true
+	case path == "/api/v1/federation/runtime/diagnose":
+		return true
+	case path == "/api/v1/federation/runtime/command":
+		return true
+	default:
+		return false
+	}
+}
+
+func requiresAdmin(path string) bool {
+	if strings.HasPrefix(path, "/api/v1/monitor/permission/") {
+		return true
+	}
+
+	if strings.HasPrefix(path, "/api/v1/group/") {
+		return true
+	}
+
+	if strings.HasPrefix(path, "/api/v1/federation/share/") {
+		return true
+	}
+
+	if strings.HasPrefix(path, "/api/v1/node/") {
+		return true
+	}
+
+	if strings.HasPrefix(path, "/api/v1/speed-limit/") {
+		return true
+	}
+
+	if strings.HasPrefix(path, "/api/v1/backup/") {
+		return true
+	}
+
+	if strings.HasPrefix(path, "/api/v1/api/v1/backup/") {
+		return true
+	}
+
+	if strings.HasPrefix(path, "/api/v1/tunnel/") {
+		if strings.HasPrefix(path, "/api/v1/tunnel/user/tunnel") {
+			return false
+		}
+		return true
+	}
+
+	switch path {
+	case "/api/v1/user/create", "/api/v1/user/list", "/api/v1/user/update", "/api/v1/user/delete", "/api/v1/user/reset":
+		return true
+	case "/api/v1/config/update", "/api/v1/config/update-single":
+		return true
+	case "/api/v1/announcement/update":
+		return true
+	default:
+		return false
+	}
+}

go-backend/internal/http/middleware/cors.go

@@ -0,0 +1,17 @@
+package middleware
+
+import "net/http"
+
+func CORS(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Access-Control-Allow-Origin", "*")
+		w.Header().Set("Access-Control-Allow-Headers", "*")
+		w.Header().Set("Access-Control-Allow-Methods", "GET, POST, DELETE, PUT, OPTIONS")
+		w.Header().Set("Access-Control-Expose-Headers", "Authorization")
+		if r.Method == http.MethodOptions {
+			w.WriteHeader(http.StatusNoContent)
+			return
+		}
+		next.ServeHTTP(w, r)
+	})
+}

go-backend/internal/http/middleware/recover.go

@@ -0,0 +1,19 @@
+package middleware
+
+import (
+	"fmt"
+	"net/http"
+
+	"go-backend/internal/http/response"
+)
+
+func Recover(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		defer func() {
+			if rec := recover(); rec != nil {
+				response.WriteJSON(w, response.Err(-2, fmt.Sprint(rec)))
+			}
+		}()
+		next.ServeHTTP(w, r)
+	})
+}

go-backend/internal/http/middleware/request_log.go

@@ -0,0 +1,57 @@
+package middleware
+
+import (
+	"bufio"
+	"io"
+	"log"
+	"net"
+	"net/http"
+	"time"
+)
+
+type statusWriter struct {
+	http.ResponseWriter
+	status int
+}
+
+func (w *statusWriter) WriteHeader(code int) {
+	w.status = code
+	w.ResponseWriter.WriteHeader(code)
+}
+
+func (w *statusWriter) Hijack() (net.Conn, *bufio.ReadWriter, error) {
+	hj, ok := w.ResponseWriter.(http.Hijacker)
+	if !ok {
+		return nil, nil, http.ErrNotSupported
+	}
+	return hj.Hijack()
+}
+
+func (w *statusWriter) Flush() {
+	if f, ok := w.ResponseWriter.(http.Flusher); ok {
+		f.Flush()
+	}
+}
+
+func (w *statusWriter) ReadFrom(r io.Reader) (int64, error) {
+	if rf, ok := w.ResponseWriter.(io.ReaderFrom); ok {
+		return rf.ReadFrom(r)
+	}
+	return io.Copy(w.ResponseWriter, r)
+}
+
+func (w *statusWriter) Push(target string, opts *http.PushOptions) error {
+	if p, ok := w.ResponseWriter.(http.Pusher); ok {
+		return p.Push(target, opts)
+	}
+	return http.ErrNotSupported
+}
+
+func RequestLog(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		sw := &statusWriter{ResponseWriter: w, status: http.StatusOK}
+		start := time.Now()
+		next.ServeHTTP(sw, r)
+		log.Printf("%s %s -> %d (%s)", r.Method, r.URL.Path, sw.status, time.Since(start).String())
+	})
+}

go-backend/internal/http/response/r.go

@@ -0,0 +1,48 @@
+package response
+
+import (
+	"encoding/json"
+	"net/http"
+	"time"
+)
+
+type R struct {
+	Code int         `json:"code"`
+	Msg  string      `json:"msg"`
+	TS   int64       `json:"ts"`
+	Data interface{} `json:"data,omitempty"`
+}
+
+func OK(data interface{}) R {
+	return R{
+		Code: 0,
+		Msg:  "操作成功",
+		TS:   time.Now().UnixMilli(),
+		Data: data,
+	}
+}
+
+func OKEmpty() R {
+	return R{
+		Code: 0,
+		Msg:  "操作成功",
+		TS:   time.Now().UnixMilli(),
+	}
+}
+
+func Err(code int, msg string) R {
+	return R{
+		Code: code,
+		Msg:  msg,
+		TS:   time.Now().UnixMilli(),
+	}
+}
+
+func ErrDefault(msg string) R {
+	return Err(-1, msg)
+}
+
+func WriteJSON(w http.ResponseWriter, payload R) {
+	w.Header().Set("Content-Type", "application/json; charset=utf-8")
+	_ = json.NewEncoder(w).Encode(payload)
+}

go-backend/internal/http/router.go

@@ -0,0 +1,20 @@
+package httpserver
+
+import (
+	"net/http"
+
+	"go-backend/internal/http/handler"
+	"go-backend/internal/http/middleware"
+)
+
+func NewRouter(h *handler.Handler, jwtSecret string) http.Handler {
+	mux := http.NewServeMux()
+	h.Register(mux)
+	mux.Handle("/system-info", h.WebSocketHandler())
+
+	wrapped := middleware.Recover(mux)
+	wrapped = middleware.JWT(middleware.AuthOptions{JWTSecret: jwtSecret})(wrapped)
+	wrapped = middleware.RequestLog(wrapped)
+	wrapped = middleware.CORS(wrapped)
+	return wrapped
+}

go-backend/internal/metrics/ingestion.go

@@ -0,0 +1,135 @@
+package metrics
+
+import (
+	"context"
+	"log"
+	"sync"
+	"time"
+
+	"go-backend/internal/store/model"
+	"go-backend/internal/store/repo"
+)
+
+type SystemInfo struct {
+	Uptime           uint64  `json:"uptime"`
+	BytesReceived    uint64  `json:"bytes_received"`
+	BytesTransmitted uint64  `json:"bytes_transmitted"`
+	CPUUsage         float64 `json:"cpu_usage"`
+	MemoryUsage      float64 `json:"memory_usage"`
+	DiskUsage        float64 `json:"disk_usage"`
+	Load1            float64 `json:"load1"`
+	Load5            float64 `json:"load5"`
+	Load15           float64 `json:"load15"`
+	TCPConns         int64   `json:"tcp_conns"`
+	UDPConns         int64   `json:"udp_conns"`
+	NetInSpeed       int64   `json:"net_in_speed"`
+	NetOutSpeed      int64   `json:"net_out_speed"`
+}
+
+type IngestionService struct {
+	repo          *repo.Repository
+	nodeBuffer    []*model.NodeMetric
+	nodeBufferMu  sync.Mutex
+	flushInterval time.Duration
+	retentionDays int
+}
+
+func NewIngestionService(repo *repo.Repository) *IngestionService {
+	return &IngestionService{
+		repo:          repo,
+		nodeBuffer:    make([]*model.NodeMetric, 0, 500),
+		flushInterval: 30 * time.Second,
+		retentionDays: 7,
+	}
+}
+
+func (s *IngestionService) Start(ctx context.Context) {
+	flushTicker := time.NewTicker(s.flushInterval)
+	defer flushTicker.Stop()
+
+	pruneTicker := time.NewTicker(1 * time.Hour)
+	defer pruneTicker.Stop()
+
+	for {
+		select {
+		case <-ctx.Done():
+			s.flushNodeMetrics()
+			return
+		case <-flushTicker.C:
+			s.flushNodeMetrics()
+		case <-pruneTicker.C:
+			s.pruneMetrics()
+		}
+	}
+}
+
+func (s *IngestionService) RecordNodeMetric(nodeID int64, info SystemInfo) {
+	m := &model.NodeMetric{
+		NodeID:      nodeID,
+		Timestamp:   time.Now().UnixMilli(),
+		CPUUsage:    info.CPUUsage,
+		MemUsage:    info.MemoryUsage,
+		DiskUsage:   info.DiskUsage,
+		NetInBytes:  int64(info.BytesReceived),
+		NetOutBytes: int64(info.BytesTransmitted),
+		NetInSpeed:  info.NetInSpeed,
+		NetOutSpeed: info.NetOutSpeed,
+		Load1:       info.Load1,
+		Load5:       info.Load5,
+		Load15:      info.Load15,
+		TCPConns:    info.TCPConns,
+		UDPConns:    info.UDPConns,
+		Uptime:      int64(info.Uptime),
+	}
+
+	s.nodeBufferMu.Lock()
+	s.nodeBuffer = append(s.nodeBuffer, m)
+	shouldFlush := len(s.nodeBuffer) >= 200
+	s.nodeBufferMu.Unlock()
+
+	if shouldFlush {
+		go s.flushNodeMetrics()
+	}
+}
+
+func (s *IngestionService) flushNodeMetrics() {
+	s.nodeBufferMu.Lock()
+	if len(s.nodeBuffer) == 0 {
+		s.nodeBufferMu.Unlock()
+		return
+	}
+	buffer := s.nodeBuffer
+	s.nodeBuffer = make([]*model.NodeMetric, 0, 500)
+	s.nodeBufferMu.Unlock()
+
+	if s.repo == nil {
+		return
+	}
+	if err := s.repo.InsertNodeMetricBatch(buffer); err != nil {
+		log.Printf("monitoring write failed op=node_metric.flush count=%d err=%v", len(buffer), err)
+	}
+}
+
+func (s *IngestionService) pruneMetrics() {
+	cutoff := time.Now().Add(-time.Duration(s.retentionDays) * 24 * time.Hour).UnixMilli()
+	if s.repo == nil {
+		return
+	}
+	if err := s.repo.PruneNodeMetrics(cutoff); err != nil {
+		log.Printf("monitoring prune failed op=node_metric cutoff=%d err=%v", cutoff, err)
+	}
+	if err := s.repo.PruneTunnelMetrics(cutoff); err != nil {
+		log.Printf("monitoring prune failed op=tunnel_metric cutoff=%d err=%v", cutoff, err)
+	}
+	if err := s.repo.PruneServiceMonitorResults(cutoff); err != nil {
+		log.Printf("monitoring prune failed op=service_monitor_result cutoff=%d err=%v", cutoff, err)
+	}
+}
+
+func (s *IngestionService) GetLatestMetric(nodeID int64) (*model.NodeMetric, error) {
+	return s.repo.GetLatestNodeMetric(nodeID)
+}
+
+func (s *IngestionService) GetMetrics(nodeID int64, startMs, endMs int64) ([]model.NodeMetric, error) {
+	return s.repo.GetNodeMetrics(nodeID, startMs, endMs)
+}

go-backend/internal/metrics/ingestion_test.go

@@ -0,0 +1,294 @@
+package metrics
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"go-backend/internal/store/repo"
+)
+
+func TestRecordNodeMetric(t *testing.T) {
+	r, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	svc := NewIngestionService(r)
+
+	info := SystemInfo{
+		Uptime:           86400,
+		BytesReceived:    1024000,
+		BytesTransmitted: 2048000,
+		CPUUsage:         45.5,
+		MemoryUsage:      60.2,
+		DiskUsage:        30.1,
+		Load1:            1.5,
+		Load5:            1.2,
+		Load15:           0.9,
+		TCPConns:         100,
+		UDPConns:         50,
+		NetInSpeed:       51200,
+		NetOutSpeed:      102400,
+	}
+
+	svc.RecordNodeMetric(1, info)
+	svc.flushNodeMetrics()
+
+	metrics, err := r.GetNodeMetrics(1, time.Now().UnixMilli()-60000, time.Now().UnixMilli()+1000)
+	if err != nil {
+		t.Fatalf("get metrics: %v", err)
+	}
+	if len(metrics) != 1 {
+		t.Fatalf("expected 1 metric, got %d", len(metrics))
+	}
+
+	m := metrics[0]
+	if m.CPUUsage != 45.5 {
+		t.Fatalf("expected CPUUsage 45.5, got %f", m.CPUUsage)
+	}
+	if m.MemUsage != 60.2 {
+		t.Fatalf("expected MemUsage 60.2, got %f", m.MemUsage)
+	}
+	if m.DiskUsage != 30.1 {
+		t.Fatalf("expected DiskUsage 30.1, got %f", m.DiskUsage)
+	}
+	if m.Load1 != 1.5 {
+		t.Fatalf("expected Load1 1.5, got %f", m.Load1)
+	}
+	if m.TCPConns != 100 {
+		t.Fatalf("expected TCPConns 100, got %d", m.TCPConns)
+	}
+	if m.UDPConns != 50 {
+		t.Fatalf("expected UDPConns 50, got %d", m.UDPConns)
+	}
+}
+
+func TestRecordNodeMetricAutoFlush(t *testing.T) {
+	r, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	svc := NewIngestionService(r)
+
+	info := SystemInfo{
+		CPUUsage:    50.0,
+		MemoryUsage: 60.0,
+		DiskUsage:   30.0,
+	}
+
+	for i := 0; i < 250; i++ {
+		svc.RecordNodeMetric(1, info)
+	}
+
+	time.Sleep(100 * time.Millisecond)
+
+	metrics, err := r.GetNodeMetrics(1, time.Now().UnixMilli()-60000, time.Now().UnixMilli()+1000)
+	if err != nil {
+		t.Fatalf("get metrics: %v", err)
+	}
+	if len(metrics) < 200 {
+		t.Fatalf("expected at least 200 metrics after auto-flush, got %d", len(metrics))
+	}
+}
+
+func TestIngestionServiceStart(t *testing.T) {
+	r, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	svc := NewIngestionService(r)
+	svc.flushInterval = 100 * time.Millisecond
+
+	ctx, cancel := context.WithTimeout(context.Background(), 500*time.Millisecond)
+	defer cancel()
+
+	info := SystemInfo{
+		CPUUsage:    45.0,
+		MemoryUsage: 55.0,
+		DiskUsage:   35.0,
+	}
+
+	go svc.Start(ctx)
+
+	for i := 0; i < 10; i++ {
+		svc.RecordNodeMetric(1, info)
+		time.Sleep(50 * time.Millisecond)
+	}
+
+	<-ctx.Done()
+
+	metrics, err := r.GetNodeMetrics(1, time.Now().UnixMilli()-60000, time.Now().UnixMilli()+1000)
+	if err != nil {
+		t.Fatalf("get metrics: %v", err)
+	}
+	if len(metrics) == 0 {
+		t.Fatalf("expected metrics after service run")
+	}
+}
+
+func TestGetLatestMetric(t *testing.T) {
+	r, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	svc := NewIngestionService(r)
+
+	now := time.Now().UnixMilli()
+
+	info1 := SystemInfo{CPUUsage: 40.0, MemoryUsage: 50.0, DiskUsage: 30.0}
+	svc.RecordNodeMetric(1, info1)
+
+	time.Sleep(5 * time.Millisecond)
+
+	info2 := SystemInfo{CPUUsage: 60.0, MemoryUsage: 70.0, DiskUsage: 40.0}
+	svc.RecordNodeMetric(1, info2)
+
+	svc.flushNodeMetrics()
+
+	latest, err := svc.GetLatestMetric(1)
+	if err != nil {
+		t.Fatalf("get latest: %v", err)
+	}
+	if latest == nil {
+		t.Fatalf("expected latest metric")
+	}
+	if latest.CPUUsage != 60.0 {
+		t.Fatalf("expected latest CPUUsage 60.0, got %f", latest.CPUUsage)
+	}
+
+	_ = now
+
+	latestNone, err := svc.GetLatestMetric(999)
+	if err != nil {
+		t.Fatalf("get latest for non-existent: %v", err)
+	}
+	if latestNone != nil {
+		t.Fatalf("expected nil for non-existent node")
+	}
+}
+
+func TestGetMetricsWithTimeRange(t *testing.T) {
+	r, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	svc := NewIngestionService(r)
+
+	now := time.Now().UnixMilli()
+
+	for i := 0; i < 5; i++ {
+		info := SystemInfo{
+			CPUUsage:    float64(40 + i*5),
+			MemoryUsage: 50.0,
+			DiskUsage:   30.0,
+		}
+		svc.RecordNodeMetric(1, info)
+		time.Sleep(10 * time.Millisecond)
+	}
+
+	svc.flushNodeMetrics()
+
+	metrics, err := svc.GetMetrics(1, now-60000, now+1000)
+	if err != nil {
+		t.Fatalf("get metrics: %v", err)
+	}
+	if len(metrics) != 5 {
+		t.Fatalf("expected 5 metrics, got %d", len(metrics))
+	}
+}
+
+func TestPruneMetrics(t *testing.T) {
+	r, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	svc := NewIngestionService(r)
+	svc.retentionDays = 1
+
+	info := SystemInfo{CPUUsage: 50.0, MemoryUsage: 60.0, DiskUsage: 30.0}
+
+	svc.RecordNodeMetric(1, info)
+	svc.flushNodeMetrics()
+
+	svc.pruneMetrics()
+
+	metrics, err := r.GetNodeMetrics(1, time.Now().UnixMilli()-60000, time.Now().UnixMilli()+1000)
+	if err != nil {
+		t.Fatalf("get metrics: %v", err)
+	}
+	if len(metrics) != 1 {
+		t.Fatalf("expected 1 metric (not pruned), got %d", len(metrics))
+	}
+}
+
+func TestMultipleNodes(t *testing.T) {
+	r, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	svc := NewIngestionService(r)
+
+	info := SystemInfo{
+		CPUUsage:    50.0,
+		MemoryUsage: 60.0,
+		DiskUsage:   30.0,
+	}
+
+	svc.RecordNodeMetric(1, info)
+	svc.RecordNodeMetric(2, info)
+	svc.RecordNodeMetric(3, info)
+
+	svc.flushNodeMetrics()
+
+	for nodeID := int64(1); nodeID <= 3; nodeID++ {
+		metrics, err := r.GetNodeMetrics(nodeID, time.Now().UnixMilli()-60000, time.Now().UnixMilli()+1000)
+		if err != nil {
+			t.Fatalf("get metrics for node %d: %v", nodeID, err)
+		}
+		if len(metrics) != 1 {
+			t.Fatalf("expected 1 metric for node %d, got %d", nodeID, len(metrics))
+		}
+	}
+}
+
+func TestZeroValues(t *testing.T) {
+	r, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	svc := NewIngestionService(r)
+
+	info := SystemInfo{}
+
+	svc.RecordNodeMetric(1, info)
+	svc.flushNodeMetrics()
+
+	metrics, err := r.GetNodeMetrics(1, time.Now().UnixMilli()-60000, time.Now().UnixMilli()+1000)
+	if err != nil {
+		t.Fatalf("get metrics: %v", err)
+	}
+	if len(metrics) != 1 {
+		t.Fatalf("expected 1 metric, got %d", len(metrics))
+	}
+
+	m := metrics[0]
+	if m.CPUUsage != 0 || m.MemUsage != 0 || m.DiskUsage != 0 {
+		t.Fatalf("expected zero values, got CPU=%f Mem=%f Disk=%f", m.CPUUsage, m.MemUsage, m.DiskUsage)
+	}
+}

go-backend/internal/monitoring/limits.go

@@ -0,0 +1,114 @@
+package monitoring
+
+import (
+	"strconv"
+	"strings"
+)
+
+type ServiceMonitorLimits struct {
+	CheckerScanIntervalSec int `json:"checkerScanIntervalSec"`
+	WorkerLimit            int `json:"workerLimit"`
+
+	MinIntervalSec     int `json:"minIntervalSec"`
+	DefaultIntervalSec int `json:"defaultIntervalSec"`
+
+	MinTimeoutSec     int `json:"minTimeoutSec"`
+	DefaultTimeoutSec int `json:"defaultTimeoutSec"`
+	MaxTimeoutSec     int `json:"maxTimeoutSec"`
+}
+
+const (
+	ConfigServiceMonitorCheckerScanIntervalSec = "service_monitor_checker_scan_interval_sec"
+	ConfigServiceMonitorWorkerLimit            = "service_monitor_worker_limit"
+	ConfigServiceMonitorMinIntervalSec         = "service_monitor_min_interval_sec"
+	ConfigServiceMonitorDefaultIntervalSec     = "service_monitor_default_interval_sec"
+	ConfigServiceMonitorMinTimeoutSec          = "service_monitor_min_timeout_sec"
+	ConfigServiceMonitorDefaultTimeoutSec      = "service_monitor_default_timeout_sec"
+	ConfigServiceMonitorMaxTimeoutSec          = "service_monitor_max_timeout_sec"
+)
+
+func DefaultServiceMonitorLimits() ServiceMonitorLimits {
+	return ServiceMonitorLimits{
+		CheckerScanIntervalSec: 1,
+		WorkerLimit:            20,
+		MinIntervalSec:         1,
+		DefaultIntervalSec:     1,
+		MinTimeoutSec:          1,
+		DefaultTimeoutSec:      5,
+		MaxTimeoutSec:          60,
+	}
+}
+
+// ServiceMonitorLimitsFromConfigMap parses limits from vite_config values.
+// Missing/invalid values fall back to defaults.
+func ServiceMonitorLimitsFromConfigMap(cfg map[string]string) ServiceMonitorLimits {
+	limits := DefaultServiceMonitorLimits()
+	if cfg == nil {
+		return limits
+	}
+
+	limits.CheckerScanIntervalSec = parseConfigInt(cfg, ConfigServiceMonitorCheckerScanIntervalSec, limits.CheckerScanIntervalSec)
+	limits.WorkerLimit = parseConfigInt(cfg, ConfigServiceMonitorWorkerLimit, limits.WorkerLimit)
+	limits.MinIntervalSec = parseConfigInt(cfg, ConfigServiceMonitorMinIntervalSec, limits.MinIntervalSec)
+	limits.DefaultIntervalSec = parseConfigInt(cfg, ConfigServiceMonitorDefaultIntervalSec, limits.DefaultIntervalSec)
+	limits.MinTimeoutSec = parseConfigInt(cfg, ConfigServiceMonitorMinTimeoutSec, limits.MinTimeoutSec)
+	limits.DefaultTimeoutSec = parseConfigInt(cfg, ConfigServiceMonitorDefaultTimeoutSec, limits.DefaultTimeoutSec)
+	limits.MaxTimeoutSec = parseConfigInt(cfg, ConfigServiceMonitorMaxTimeoutSec, limits.MaxTimeoutSec)
+
+	return normalizeServiceMonitorLimits(limits)
+}
+
+func normalizeServiceMonitorLimits(limits ServiceMonitorLimits) ServiceMonitorLimits {
+	if limits.CheckerScanIntervalSec <= 0 {
+		limits.CheckerScanIntervalSec = 30
+	}
+	if limits.WorkerLimit <= 0 {
+		limits.WorkerLimit = 5
+	}
+	if limits.WorkerLimit > 50 {
+		limits.WorkerLimit = 50
+	}
+
+	if limits.MinIntervalSec <= 0 {
+		limits.MinIntervalSec = limits.CheckerScanIntervalSec
+	}
+	if limits.MinIntervalSec < limits.CheckerScanIntervalSec {
+		limits.MinIntervalSec = limits.CheckerScanIntervalSec
+	}
+	if limits.DefaultIntervalSec <= 0 {
+		limits.DefaultIntervalSec = 60
+	}
+	if limits.DefaultIntervalSec < limits.MinIntervalSec {
+		limits.DefaultIntervalSec = limits.MinIntervalSec
+	}
+
+	if limits.MinTimeoutSec <= 0 {
+		limits.MinTimeoutSec = 1
+	}
+	if limits.DefaultTimeoutSec <= 0 {
+		limits.DefaultTimeoutSec = 5
+	}
+	if limits.DefaultTimeoutSec < limits.MinTimeoutSec {
+		limits.DefaultTimeoutSec = limits.MinTimeoutSec
+	}
+	if limits.MaxTimeoutSec <= 0 {
+		limits.MaxTimeoutSec = 60
+	}
+	if limits.MaxTimeoutSec < limits.DefaultTimeoutSec {
+		limits.MaxTimeoutSec = limits.DefaultTimeoutSec
+	}
+
+	return limits
+}
+
+func parseConfigInt(cfg map[string]string, key string, fallback int) int {
+	v := strings.TrimSpace(cfg[key])
+	if v == "" {
+		return fallback
+	}
+	n, err := strconv.Atoi(v)
+	if err != nil {
+		return fallback
+	}
+	return n
+}

go-backend/internal/security/aes.go

@@ -0,0 +1,65 @@
+package security
+
+import (
+	"crypto/aes"
+	"crypto/cipher"
+	"crypto/rand"
+	"crypto/sha256"
+	"encoding/base64"
+	"fmt"
+)
+
+type AESCrypto struct {
+	key []byte
+}
+
+func NewAESCrypto(secret string) (*AESCrypto, error) {
+	if secret == "" {
+		return nil, fmt.Errorf("secret is empty")
+	}
+	hash := sha256.Sum256([]byte(secret))
+	return &AESCrypto{key: hash[:]}, nil
+}
+
+func (a *AESCrypto) Encrypt(plain []byte) (string, error) {
+	if len(plain) == 0 {
+		return "", fmt.Errorf("empty plaintext")
+	}
+	block, err := aes.NewCipher(a.key)
+	if err != nil {
+		return "", err
+	}
+	gcm, err := cipher.NewGCM(block)
+	if err != nil {
+		return "", err
+	}
+	nonce := make([]byte, gcm.NonceSize())
+	if _, err := rand.Read(nonce); err != nil {
+		return "", err
+	}
+	sealed := gcm.Seal(nil, nonce, plain, nil)
+	data := append(nonce, sealed...)
+	return base64.StdEncoding.EncodeToString(data), nil
+}
+
+func (a *AESCrypto) Decrypt(cipherText string) ([]byte, error) {
+	raw, err := base64.StdEncoding.DecodeString(cipherText)
+	if err != nil {
+		return nil, err
+	}
+	block, err := aes.NewCipher(a.key)
+	if err != nil {
+		return nil, err
+	}
+	gcm, err := cipher.NewGCM(block)
+	if err != nil {
+		return nil, err
+	}
+	nonceSize := gcm.NonceSize()
+	if len(raw) < nonceSize {
+		return nil, fmt.Errorf("ciphertext too short")
+	}
+	nonce := raw[:nonceSize]
+	data := raw[nonceSize:]
+	return gcm.Open(nil, nonce, data, nil)
+}

go-backend/internal/security/md5.go

@@ -0,0 +1,11 @@
+package security
+
+import (
+	"crypto/md5"
+	"fmt"
+)
+
+func MD5(input string) string {
+	hash := md5.Sum([]byte(input))
+	return fmt.Sprintf("%x", hash)
+}

go-backend/internal/store/model/model.go

@@ -0,0 +1,734 @@
+// Package model defines GORM model structs for all database tables,
+// providing a single source of truth for the schema that works
+// transparently with both SQLite and PostgreSQL.
+package model
+
+import "database/sql"
+
+// ─── Core Business Tables ────────────────────────────────────────────
+
+// User maps to the "user" table. PostgreSQL treats "user" as a reserved
+// word, so TableName() is required for correct quoting.
+type User struct {
+	ID            int64         `gorm:"primaryKey;autoIncrement"`
+	User          string        `gorm:"column:user;type:varchar(100);not null"`
+	Pwd           string        `gorm:"type:varchar(100);not null"`
+	RoleID        int           `gorm:"column:role_id;not null"`
+	ExpTime       int64         `gorm:"column:exp_time;not null"`
+	Flow          int64         `gorm:"not null"`
+	InFlow        int64         `gorm:"column:in_flow;not null;default:0"`
+	OutFlow       int64         `gorm:"column:out_flow;not null;default:0"`
+	FlowResetTime int64         `gorm:"column:flow_reset_time;not null"`
+	Num           int           `gorm:"not null"`
+	CreatedTime   int64         `gorm:"column:created_time;not null"`
+	UpdatedTime   sql.NullInt64 `gorm:"column:updated_time"`
+	Status        int           `gorm:"not null"`
+}
+
+func (User) TableName() string { return "user" }
+
+// Forward maps to the "forward" table.
+type Forward struct {
+	ID          int64         `gorm:"primaryKey;autoIncrement"`
+	UserID      int64         `gorm:"column:user_id;not null"`
+	UserName    string        `gorm:"column:user_name;type:varchar(100);not null"`
+	Name        string        `gorm:"type:varchar(100);not null"`
+	TunnelID    int64         `gorm:"column:tunnel_id;not null"`
+	RemoteAddr  string        `gorm:"column:remote_addr;type:text;not null"`
+	Strategy    string        `gorm:"type:varchar(100);not null;default:'fifo'"`
+	InFlow      int64         `gorm:"not null;default:0"`
+	OutFlow     int64         `gorm:"column:out_flow;not null;default:0"`
+	CreatedTime int64         `gorm:"column:created_time;not null"`
+	UpdatedTime int64         `gorm:"column:updated_time;not null"`
+	Status      int           `gorm:"not null"`
+	Inx         int           `gorm:"not null;default:0"`
+	SpeedID     sql.NullInt64 `gorm:"column:speed_id"`
+}
+
+func (Forward) TableName() string { return "forward" }
+
+type ForwardPort struct {
+	ID        int64          `gorm:"primaryKey;autoIncrement"`
+	ForwardID int64          `gorm:"column:forward_id;not null"`
+	NodeID    int64          `gorm:"column:node_id;not null"`
+	Port      int            `gorm:"not null"`
+	InIP      sql.NullString `gorm:"column:in_ip;type:text"`
+}
+
+func (ForwardPort) TableName() string { return "forward_port" }
+
+type Node struct {
+	ID                      int64          `gorm:"primaryKey;autoIncrement"`
+	Name                    string         `gorm:"type:varchar(100);not null"`
+	Remark                  sql.NullString `gorm:"column:remark;type:text"`
+	ExpiryTime              sql.NullInt64  `gorm:"column:expiry_time"`
+	RenewalCycle            sql.NullString `gorm:"column:renewal_cycle;type:varchar(20)"`
+	Secret                  string         `gorm:"type:varchar(100);not null"`
+	ServerIP                string         `gorm:"column:server_ip;type:varchar(100);not null"`
+	ServerIPV4              sql.NullString `gorm:"column:server_ip_v4;type:varchar(100)"`
+	ServerIPV6              sql.NullString `gorm:"column:server_ip_v6;type:varchar(100)"`
+	ExtraIPs                sql.NullString `gorm:"column:extra_ips;type:text"`
+	Port                    string         `gorm:"type:text;not null"`
+	InterfaceName           sql.NullString `gorm:"column:interface_name;type:varchar(200)"`
+	Version                 sql.NullString `gorm:"type:varchar(100)"`
+	HTTP                    int            `gorm:"column:http;not null;default:0"`
+	TLS                     int            `gorm:"column:tls;not null;default:0"`
+	Socks                   int            `gorm:"not null;default:0"`
+	CreatedTime             int64          `gorm:"column:created_time;not null"`
+	UpdatedTime             sql.NullInt64  `gorm:"column:updated_time"`
+	Status                  int            `gorm:"not null"`
+	TCPListenAddr           string         `gorm:"column:tcp_listen_addr;type:varchar(100);not null;default:'[::]'"`
+	UDPListenAddr           string         `gorm:"column:udp_listen_addr;type:varchar(100);not null;default:'[::]'"`
+	Inx                     int            `gorm:"not null;default:0"`
+	IsRemote                int            `gorm:"column:is_remote;default:0"`
+	RemoteURL               sql.NullString `gorm:"column:remote_url;type:text"`
+	RemoteToken             sql.NullString `gorm:"column:remote_token;type:text"`
+	RemoteConfig            sql.NullString `gorm:"column:remote_config;type:text"`
+	ExpiryReminderDismissed int            `gorm:"column:expiry_reminder_dismissed;not null;default:0"`
+}
+
+func (Node) TableName() string { return "node" }
+
+type SpeedLimit struct {
+	ID          int64          `gorm:"primaryKey;autoIncrement"`
+	Name        string         `gorm:"type:varchar(100);not null"`
+	Speed       int            `gorm:"not null"`
+	TunnelID    sql.NullInt64  `gorm:"column:tunnel_id"`
+	TunnelName  sql.NullString `gorm:"column:tunnel_name;type:varchar(100)"`
+	CreatedTime int64          `gorm:"column:created_time;not null"`
+	UpdatedTime sql.NullInt64  `gorm:"column:updated_time"`
+	Status      int            `gorm:"not null"`
+}
+
+func (SpeedLimit) TableName() string { return "speed_limit" }
+
+type StatisticsFlow struct {
+	ID          int64  `gorm:"primaryKey;autoIncrement" json:"id"`
+	UserID      int64  `gorm:"column:user_id;not null" json:"userId"`
+	Flow        int64  `gorm:"not null" json:"flow"`
+	TotalFlow   int64  `gorm:"column:total_flow;not null" json:"totalFlow"`
+	Time        string `gorm:"type:varchar(100);not null" json:"time"`
+	CreatedTime int64  `gorm:"column:created_time;not null" json:"-"`
+}
+
+func (StatisticsFlow) TableName() string { return "statistics_flow" }
+
+type Tunnel struct {
+	ID           int64          `gorm:"primaryKey;autoIncrement"`
+	Name         string         `gorm:"type:varchar(100);not null"`
+	TrafficRatio float64        `gorm:"column:traffic_ratio;not null;default:1.0"`
+	Type         int            `gorm:"not null"`
+	Protocol     string         `gorm:"type:varchar(10);not null;default:'tls'"`
+	Flow         int64          `gorm:"not null"`
+	CreatedTime  int64          `gorm:"column:created_time;not null"`
+	UpdatedTime  int64          `gorm:"column:updated_time;not null"`
+	Status       int            `gorm:"not null"`
+	InIP         sql.NullString `gorm:"column:in_ip;type:text"`
+	Inx          int            `gorm:"not null;default:0"`
+	IPPreference string         `gorm:"column:ip_preference;type:varchar(10);not null;default:''"`
+}
+
+func (Tunnel) TableName() string { return "tunnel" }
+
+type UserQuota struct {
+	UserID           int64  `gorm:"column:user_id;primaryKey"`
+	DailyLimitGB     int64  `gorm:"column:daily_limit_gb;not null;default:0"`
+	MonthlyLimitGB   int64  `gorm:"column:monthly_limit_gb;not null;default:0"`
+	DailyUsedBytes   int64  `gorm:"column:daily_used_bytes;not null;default:0"`
+	MonthlyUsedBytes int64  `gorm:"column:monthly_used_bytes;not null;default:0"`
+	DayKey           int64  `gorm:"column:day_key;not null;default:0"`
+	MonthKey         int64  `gorm:"column:month_key;not null;default:0"`
+	DisabledByQuota  int    `gorm:"column:disabled_by_quota;not null;default:0"`
+	DisabledAt       int64  `gorm:"column:disabled_at;not null;default:0"`
+	PausedForwardIDs string `gorm:"column:paused_forward_ids;type:text;not null;default:''"`
+	CreatedTime      int64  `gorm:"column:created_time;not null"`
+	UpdatedTime      int64  `gorm:"column:updated_time;not null"`
+}
+
+func (UserQuota) TableName() string { return "user_quota" }
+
+type ChainTunnel struct {
+	ID        int64          `gorm:"primaryKey;autoIncrement"`
+	TunnelID  int64          `gorm:"column:tunnel_id;not null"`
+	ChainType string         `gorm:"column:chain_type;type:varchar(10);not null"`
+	NodeID    int64          `gorm:"column:node_id;not null"`
+	Port      sql.NullInt64  `gorm:"column:port"`
+	Strategy  sql.NullString `gorm:"type:varchar(10)"`
+	Inx       sql.NullInt64  `gorm:"column:inx"`
+	Protocol  sql.NullString `gorm:"type:varchar(10)"`
+	ConnectIP sql.NullString `gorm:"column:connect_ip;type:varchar(45)"`
+}
+
+func (ChainTunnel) TableName() string { return "chain_tunnel" }
+
+type UserTunnel struct {
+	ID            int64         `gorm:"primaryKey;autoIncrement"`
+	UserID        int64         `gorm:"column:user_id;not null;uniqueIndex:idx_user_tunnel_unique"`
+	TunnelID      int64         `gorm:"column:tunnel_id;not null;uniqueIndex:idx_user_tunnel_unique"`
+	SpeedID       sql.NullInt64 `gorm:"column:speed_id"`
+	Num           int           `gorm:"not null"`
+	Flow          int64         `gorm:"not null"`
+	InFlow        int64         `gorm:"column:in_flow;not null;default:0"`
+	OutFlow       int64         `gorm:"column:out_flow;not null;default:0"`
+	FlowResetTime int64         `gorm:"column:flow_reset_time;not null"`
+	ExpTime       int64         `gorm:"column:exp_time;not null"`
+	Status        int           `gorm:"not null"`
+}
+
+func (UserTunnel) TableName() string { return "user_tunnel" }
+
+type TunnelGroup struct {
+	ID          int64  `gorm:"primaryKey;autoIncrement"`
+	Name        string `gorm:"type:varchar(100);not null;uniqueIndex:idx_tunnel_group_name"`
+	CreatedTime int64  `gorm:"column:created_time;not null"`
+	UpdatedTime int64  `gorm:"column:updated_time;not null"`
+	Status      int    `gorm:"not null"`
+}
+
+func (TunnelGroup) TableName() string { return "tunnel_group" }
+
+type UserGroup struct {
+	ID          int64  `gorm:"primaryKey;autoIncrement"`
+	Name        string `gorm:"type:varchar(100);not null;uniqueIndex:idx_user_group_name"`
+	CreatedTime int64  `gorm:"column:created_time;not null"`
+	UpdatedTime int64  `gorm:"column:updated_time;not null"`
+	Status      int    `gorm:"not null"`
+}
+
+func (UserGroup) TableName() string { return "user_group" }
+
+type TunnelGroupTunnel struct {
+	ID            int64 `gorm:"primaryKey;autoIncrement"`
+	TunnelGroupID int64 `gorm:"column:tunnel_group_id;not null;uniqueIndex:idx_tunnel_group_tunnel_unique"`
+	TunnelID      int64 `gorm:"column:tunnel_id;not null;uniqueIndex:idx_tunnel_group_tunnel_unique"`
+	CreatedTime   int64 `gorm:"column:created_time;not null"`
+}
+
+func (TunnelGroupTunnel) TableName() string { return "tunnel_group_tunnel" }
+
+type UserGroupUser struct {
+	ID          int64 `gorm:"primaryKey;autoIncrement"`
+	UserGroupID int64 `gorm:"column:user_group_id;not null;uniqueIndex:idx_user_group_user_unique"`
+	UserID      int64 `gorm:"column:user_id;not null;uniqueIndex:idx_user_group_user_unique"`
+	CreatedTime int64 `gorm:"column:created_time;not null"`
+}
+
+func (UserGroupUser) TableName() string { return "user_group_user" }
+
+type GroupPermission struct {
+	ID            int64 `gorm:"primaryKey;autoIncrement"`
+	UserGroupID   int64 `gorm:"column:user_group_id;not null;uniqueIndex:idx_group_permission_unique"`
+	TunnelGroupID int64 `gorm:"column:tunnel_group_id;not null;uniqueIndex:idx_group_permission_unique"`
+	CreatedTime   int64 `gorm:"column:created_time;not null"`
+}
+
+func (GroupPermission) TableName() string { return "group_permission" }
+
+type GroupPermissionGrant struct {
+	ID             int64 `gorm:"primaryKey;autoIncrement"`
+	UserGroupID    int64 `gorm:"column:user_group_id;not null;uniqueIndex:idx_group_permission_grant_unique"`
+	TunnelGroupID  int64 `gorm:"column:tunnel_group_id;not null;uniqueIndex:idx_group_permission_grant_unique"`
+	UserTunnelID   int64 `gorm:"column:user_tunnel_id;not null;uniqueIndex:idx_group_permission_grant_unique"`
+	CreatedByGroup int   `gorm:"column:created_by_group;not null;default:0"`
+	CreatedTime    int64 `gorm:"column:created_time;not null"`
+}
+
+func (GroupPermissionGrant) TableName() string { return "group_permission_grant" }
+
+// MonitorPermission grants a non-admin user access to monitoring endpoints.
+// One row per user_id.
+type MonitorPermission struct {
+	ID          int64 `gorm:"primaryKey;autoIncrement" json:"id"`
+	UserID      int64 `gorm:"column:user_id;not null;uniqueIndex:idx_monitor_permission_user" json:"userId"`
+	CreatedTime int64 `gorm:"column:created_time;not null" json:"createdTime"`
+}
+
+func (MonitorPermission) TableName() string { return "monitor_permission" }
+
+type ViteConfig struct {
+	ID    int64  `gorm:"primaryKey;autoIncrement" json:"id"`
+	Name  string `gorm:"type:varchar(200);not null;uniqueIndex" json:"name"`
+	Value string `gorm:"type:text;not null" json:"value"`
+	Time  int64  `gorm:"not null" json:"time"`
+}
+
+func (ViteConfig) TableName() string { return "vite_config" }
+
+type Announcement struct {
+	ID          int64         `gorm:"primaryKey;autoIncrement" json:"id"`
+	Content     string        `gorm:"type:text;not null" json:"content"`
+	Enabled     int           `gorm:"not null;default:1" json:"enabled"`
+	CreatedTime int64         `gorm:"column:created_time;not null" json:"created_time"`
+	UpdatedTime sql.NullInt64 `gorm:"column:updated_time" json:"updated_time,omitempty"`
+}
+
+func (Announcement) TableName() string { return "announcement" }
+
+type SchemaVersion struct {
+	Version int `gorm:"not null;default:0"`
+}
+
+func (SchemaVersion) TableName() string { return "schema_version" }
+
+type PeerShare struct {
+	ID             int64  `gorm:"primaryKey;autoIncrement" json:"id"`
+	Name           string `gorm:"type:text;not null" json:"name"`
+	NodeID         int64  `gorm:"column:node_id;not null" json:"nodeId"`
+	Token          string `gorm:"type:text;not null;uniqueIndex" json:"token"`
+	MaxBandwidth   int64  `gorm:"column:max_bandwidth;default:0" json:"maxBandwidth"`
+	ExpiryTime     int64  `gorm:"column:expiry_time;default:0" json:"expiryTime"`
+	PortRangeStart int    `gorm:"column:port_range_start;default:0" json:"portRangeStart"`
+	PortRangeEnd   int    `gorm:"column:port_range_end;default:0" json:"portRangeEnd"`
+	CurrentFlow    int64  `gorm:"column:current_flow;default:0" json:"currentFlow"`
+	IsActive       int    `gorm:"column:is_active;default:1" json:"isActive"`
+	CreatedTime    int64  `gorm:"column:created_time;not null" json:"createdTime"`
+	UpdatedTime    int64  `gorm:"column:updated_time;not null" json:"updatedTime"`
+	AllowedDomains string `gorm:"column:allowed_domains;type:text;default:''" json:"allowedDomains"`
+	AllowedIPs     string `gorm:"column:allowed_ips;type:text;default:''" json:"allowedIps"`
+}
+
+func (PeerShare) TableName() string { return "peer_share" }
+
+type PeerShareRuntime struct {
+	ID            int64  `gorm:"primaryKey;autoIncrement"`
+	ShareID       int64  `gorm:"column:share_id;not null;index:idx_peer_share_runtime_share_node_status"`
+	NodeID        int64  `gorm:"column:node_id;not null;index:idx_peer_share_runtime_share_node_status"`
+	ReservationID string `gorm:"column:reservation_id;type:text;not null;uniqueIndex"`
+	ResourceKey   string `gorm:"column:resource_key;type:text;not null;uniqueIndex"`
+	BindingID     string `gorm:"column:binding_id;type:text;not null;default:'';index:idx_peer_share_runtime_binding_id"`
+	Role          string `gorm:"type:text;not null;default:''"`
+	ChainName     string `gorm:"column:chain_name;type:text;not null;default:''"`
+	ServiceName   string `gorm:"column:service_name;type:text;not null;default:''"`
+	Protocol      string `gorm:"type:text;not null;default:'tls'"`
+	Strategy      string `gorm:"type:text;not null;default:'round'"`
+	Port          int    `gorm:"not null;default:0"`
+	Target        string `gorm:"type:text;not null;default:''"`
+	Applied       int    `gorm:"not null;default:0"`
+	Status        int    `gorm:"not null;default:1;index:idx_peer_share_runtime_share_node_status"`
+	CreatedTime   int64  `gorm:"column:created_time;not null"`
+	UpdatedTime   int64  `gorm:"column:updated_time;not null"`
+}
+
+func (PeerShareRuntime) TableName() string { return "peer_share_runtime" }
+
+type FederationTunnelBinding struct {
+	ID              int64  `gorm:"primaryKey;autoIncrement"`
+	TunnelID        int64  `gorm:"column:tunnel_id;not null;uniqueIndex:idx_federation_tunnel_binding_unique;index:idx_federation_tunnel_binding_tunnel"`
+	NodeID          int64  `gorm:"column:node_id;not null;uniqueIndex:idx_federation_tunnel_binding_unique"`
+	ChainType       int    `gorm:"column:chain_type;not null;uniqueIndex:idx_federation_tunnel_binding_unique"`
+	HopInx          int    `gorm:"column:hop_inx;not null;default:0;uniqueIndex:idx_federation_tunnel_binding_unique"`
+	RemoteURL       string `gorm:"column:remote_url;type:text;not null"`
+	ResourceKey     string `gorm:"column:resource_key;type:text;not null;uniqueIndex"`
+	RemoteBindingID string `gorm:"column:remote_binding_id;type:text;not null"`
+	AllocatedPort   int    `gorm:"column:allocated_port;not null"`
+	Status          int    `gorm:"not null;default:1;index:idx_federation_tunnel_binding_tunnel"`
+	CreatedTime     int64  `gorm:"column:created_time;not null"`
+	UpdatedTime     int64  `gorm:"column:updated_time;not null"`
+}
+
+func (FederationTunnelBinding) TableName() string { return "federation_tunnel_binding" }
+
+// ─── Backup / Import-Export Structs ──────────────────────────────────
+// These are not GORM models; they define the JSON wire format for the
+// backup/restore API and MUST keep their existing json tags unchanged.
+
+// BackupData represents the full backup structure.
+type BackupData struct {
+	Version      string              `json:"version"`
+	ExportedAt   int64               `json:"exportedAt"`
+	Users        []UserBackup        `json:"users,omitempty"`
+	Nodes        []NodeBackup        `json:"nodes,omitempty"`
+	Tunnels      []TunnelBackup      `json:"tunnels,omitempty"`
+	Forwards     []ForwardBackup     `json:"forwards,omitempty"`
+	UserTunnels  []UserTunnelBackup  `json:"userTunnels,omitempty"`
+	SpeedLimits  []SpeedLimitBackup  `json:"speedLimits,omitempty"`
+	TunnelGroups []TunnelGroupBackup `json:"tunnelGroups,omitempty"`
+	UserGroups   []UserGroupBackup   `json:"userGroups,omitempty"`
+	Permissions  []PermissionBackup  `json:"permissions,omitempty"`
+	Configs      map[string]string   `json:"configs,omitempty"`
+}
+
+type UserBackup struct {
+	ID              int64  `json:"id"`
+	User            string `json:"user"`
+	Pwd             string `json:"pwd"`
+	RoleID          int    `json:"roleId"`
+	ExpTime         int64  `json:"expTime"`
+	Flow            int64  `json:"flow"`
+	InFlow          int64  `json:"inFlow"`
+	OutFlow         int64  `json:"outFlow"`
+	FlowResetTime   int64  `json:"flowResetTime"`
+	DailyQuotaGB    int64  `json:"dailyQuotaGB,omitempty"`
+	MonthlyQuotaGB  int64  `json:"monthlyQuotaGB,omitempty"`
+	DisabledByQuota int    `json:"disabledByQuota,omitempty"`
+	QuotaDisabledAt int64  `json:"quotaDisabledAt,omitempty"`
+	Num             int    `json:"num"`
+	CreatedTime     int64  `json:"createdTime"`
+	UpdatedTime     int64  `json:"updatedTime,omitempty"`
+	Status          int    `json:"status"`
+}
+
+type NodeBackup struct {
+	ID            int64  `json:"id"`
+	Name          string `json:"name"`
+	Remark        string `json:"remark,omitempty"`
+	ExpiryTime    int64  `json:"expiryTime,omitempty"`
+	RenewalCycle  string `json:"renewalCycle,omitempty"`
+	Secret        string `json:"secret"`
+	ServerIP      string `json:"serverIp"`
+	ServerIPv4    string `json:"serverIpV4,omitempty"`
+	ServerIPv6    string `json:"serverIpV6,omitempty"`
+	ExtraIPs      string `json:"extraIPs,omitempty"`
+	Port          string `json:"port"`
+	InterfaceName string `json:"interfaceName,omitempty"`
+	Version       string `json:"version,omitempty"`
+	HTTP          int    `json:"http"`
+	TLS           int    `json:"tls"`
+	Socks         int    `json:"socks"`
+	CreatedTime   int64  `json:"createdTime"`
+	UpdatedTime   int64  `json:"updatedTime,omitempty"`
+	Status        int    `json:"status"`
+	TCPListenAddr string `json:"tcpListenAddr"`
+	UDPListenAddr string `json:"udpListenAddr"`
+	Inx           int    `json:"inx"`
+	IsRemote      int    `json:"isRemote"`
+	RemoteURL     string `json:"remoteUrl,omitempty"`
+	RemoteToken   string `json:"remoteToken,omitempty"`
+	RemoteConfig  string `json:"remoteConfig,omitempty"`
+}
+
+type TunnelBackup struct {
+	ID           int64               `json:"id"`
+	Name         string              `json:"name"`
+	TrafficRatio float64             `json:"trafficRatio"`
+	Type         int                 `json:"type"`
+	Protocol     string              `json:"protocol"`
+	Flow         int64               `json:"flow"`
+	CreatedTime  int64               `json:"createdTime"`
+	UpdatedTime  int64               `json:"updatedTime"`
+	Status       int                 `json:"status"`
+	InIP         string              `json:"inIp,omitempty"`
+	Inx          int                 `json:"inx"`
+	IPPreference string              `json:"ipPreference,omitempty"`
+	ChainTunnels []ChainTunnelBackup `json:"chainTunnels,omitempty"`
+}
+
+type ChainTunnelBackup struct {
+	ID        int64  `json:"id"`
+	TunnelID  int64  `json:"tunnelId"`
+	ChainType string `json:"chainType"`
+	NodeID    int64  `json:"nodeId"`
+	Port      int    `json:"port,omitempty"`
+	Strategy  string `json:"strategy,omitempty"`
+	Inx       int    `json:"inx,omitempty"`
+	Protocol  string `json:"protocol,omitempty"`
+}
+
+type ForwardBackup struct {
+	ID           int64                `json:"id"`
+	UserID       int64                `json:"userId"`
+	UserName     string               `json:"userName"`
+	Name         string               `json:"name"`
+	TunnelID     int64                `json:"tunnelId"`
+	RemoteAddr   string               `json:"remoteAddr"`
+	Strategy     string               `json:"strategy"`
+	InFlow       int64                `json:"inFlow"`
+	OutFlow      int64                `json:"outFlow"`
+	CreatedTime  int64                `json:"createdTime"`
+	UpdatedTime  int64                `json:"updatedTime"`
+	Status       int                  `json:"status"`
+	Inx          int                  `json:"inx"`
+	SpeedID      *int64               `json:"speedId,omitempty"`
+	ForwardPorts *[]ForwardPortBackup `json:"forwardPorts,omitempty"`
+}
+
+type ForwardPortBackup struct {
+	NodeID int64 `json:"nodeId"`
+	Port   int   `json:"port"`
+}
+
+type UserTunnelBackup struct {
+	ID            int64 `json:"id"`
+	UserID        int64 `json:"userId"`
+	TunnelID      int64 `json:"tunnelId"`
+	SpeedID       int64 `json:"speedId,omitempty"`
+	Num           int   `json:"num"`
+	Flow          int64 `json:"flow"`
+	InFlow        int64 `json:"inFlow"`
+	OutFlow       int64 `json:"outFlow"`
+	FlowResetTime int64 `json:"flowResetTime"`
+	ExpTime       int64 `json:"expTime"`
+	Status        int   `json:"status"`
+}
+
+type SpeedLimitBackup struct {
+	ID          int64  `json:"id"`
+	Name        string `json:"name"`
+	Speed       int64  `json:"speed"`
+	TunnelID    *int64 `json:"tunnelId,omitempty"`
+	TunnelName  string `json:"tunnelName,omitempty"`
+	CreatedTime int64  `json:"createdTime"`
+	UpdatedTime int64  `json:"updatedTime,omitempty"`
+	Status      int    `json:"status"`
+}
+
+type TunnelGroupBackup struct {
+	ID          int64   `json:"id"`
+	Name        string  `json:"name"`
+	CreatedTime int64   `json:"createdTime"`
+	UpdatedTime int64   `json:"updatedTime"`
+	Status      int     `json:"status"`
+	Tunnels     []int64 `json:"tunnels,omitempty"`
+}
+
+type UserGroupBackup struct {
+	ID          int64   `json:"id"`
+	Name        string  `json:"name"`
+	CreatedTime int64   `json:"createdTime"`
+	UpdatedTime int64   `json:"updatedTime"`
+	Status      int     `json:"status"`
+	Users       []int64 `json:"users,omitempty"`
+}
+
+type PermissionBackup struct {
+	ID             int64                   `json:"id"`
+	UserGroupID    int64                   `json:"userGroupId"`
+	TunnelGroupID  int64                   `json:"tunnelGroupId"`
+	CreatedTime    int64                   `json:"createdTime"`
+	CreatedByGroup int                     `json:"createdByGroup"`
+	Grants         []PermissionGrantBackup `json:"grants,omitempty"`
+}
+
+type PermissionGrantBackup struct {
+	ID             int64 `json:"id"`
+	UserGroupID    int64 `json:"userGroupId"`
+	TunnelGroupID  int64 `json:"tunnelGroupId"`
+	UserTunnelID   int64 `json:"userTunnelId"`
+	CreatedTime    int64 `json:"createdTime"`
+	CreatedByGroup int   `json:"createdByGroup"`
+}
+
+// ImportResult contains the result of an import operation.
+type ImportResult struct {
+	UsersImported        int         `json:"usersImported"`
+	NodesImported        int         `json:"nodesImported"`
+	TunnelsImported      int         `json:"tunnelsImported"`
+	ForwardsImported     int         `json:"forwardsImported"`
+	UserTunnelsImported  int         `json:"userTunnelsImported"`
+	SpeedLimitsImported  int         `json:"speedLimitsImported"`
+	TunnelGroupsImported int         `json:"tunnelGroupsImported"`
+	UserGroupsImported   int         `json:"userGroupsImported"`
+	PermissionsImported  int         `json:"permissionsImported"`
+	ConfigsImported      int         `json:"configsImported"`
+	AutoBackup           *BackupData `json:"autoBackup,omitempty"`
+}
+
+// ─── View Structs (used by Repository, not GORM models) ─────────────
+// These are used for JOIN query results that don't map 1:1 to a table.
+
+// ForwardRecord is a minimal forward view used by control plane and flow policy.
+type ForwardRecord struct {
+	ID         int64
+	UserID     int64
+	UserName   string
+	Name       string
+	TunnelID   int64
+	RemoteAddr string
+	Strategy   string
+	Status     int
+	SpeedID    sql.NullInt64
+}
+
+// TunnelRecord is a minimal tunnel view used by control plane.
+type TunnelRecord struct {
+	ID           int64
+	Type         int
+	Status       int
+	Flow         int64
+	TrafficRatio float64
+}
+
+type UserQuotaView struct {
+	UserID           int64
+	DailyLimitGB     int64
+	MonthlyLimitGB   int64
+	DailyUsedBytes   int64
+	MonthlyUsedBytes int64
+	DayKey           int64
+	MonthKey         int64
+	DisabledByQuota  int
+	DisabledAt       int64
+	PausedForwardIDs string
+}
+
+// ForwardPortRecord is a forward port mapping used by control plane.
+type ForwardPortRecord struct {
+	NodeID int64
+	Port   int
+	InIP   string
+}
+
+// NodeRecord is a node view used by control plane.
+type NodeRecord struct {
+	ID            int64
+	Name          string
+	ServerIP      string
+	ServerIPv4    string
+	ServerIPv6    string
+	ExtraIPs      string
+	Status        int
+	PortRange     string
+	TCPListenAddr string
+	UDPListenAddr string
+	InterfaceName string
+	IsRemote      int
+	RemoteURL     string
+	RemoteToken   string
+	RemoteConfig  string
+}
+
+type ChainNodeRecord struct {
+	ChainType int
+	Inx       int64
+	NodeID    int64
+	Port      int
+	NodeName  string
+	Protocol  string
+	Strategy  string
+	ConnectIP string
+}
+
+type UserTunnelLimiterInfo struct {
+	UserTunnelID int64
+	LimiterID    *int64
+	Speed        *int
+}
+
+// UserFlowSnapshot holds a user's current flow counters (used by stats job).
+type UserFlowSnapshot struct {
+	UserID  int64
+	InFlow  int64
+	OutFlow int64
+}
+
+// ExpiredUserTunnel holds minimal info for an expired user_tunnel row.
+type ExpiredUserTunnel struct {
+	ID       int64
+	UserID   int64
+	TunnelID int64
+}
+
+// UserTunnelDetail is a joined view of user_tunnel + tunnel + speed_limit.
+type UserTunnelDetail struct {
+	ID            int64
+	UserID        int64
+	TunnelID      int64
+	TunnelName    string
+	Status        int
+	TunnelFlow    int
+	Flow          int64
+	InFlow        int64
+	OutFlow       int64
+	Num           int
+	FlowResetTime int64
+	ExpTime       int64
+	SpeedID       sql.NullInt64
+	SpeedLimit    sql.NullString
+	Speed         sql.NullInt64
+}
+
+// UserForwardDetail is a joined view of forward + tunnel.
+type UserForwardDetail struct {
+	ID         int64
+	Name       string
+	TunnelID   int64
+	TunnelName string
+	InIP       string
+	InPort     sql.NullInt64
+	RemoteAddr string
+	InFlow     int64
+	OutFlow    int64
+	Status     int
+	CreatedAt  int64
+}
+
+type NodeMetric struct {
+	ID          int64   `gorm:"primaryKey;autoIncrement" json:"id"`
+	NodeID      int64   `gorm:"column:node_id;not null;index:idx_node_metric_node_time,priority:1" json:"nodeId"`
+	Timestamp   int64   `gorm:"not null;index:idx_node_metric_node_time,priority:2;index:idx_node_metric_time" json:"timestamp"`
+	CPUUsage    float64 `gorm:"column:cpu_usage" json:"cpuUsage"`
+	MemUsage    float64 `gorm:"column:mem_usage" json:"memoryUsage"`
+	DiskUsage   float64 `gorm:"column:disk_usage" json:"diskUsage"`
+	NetInBytes  int64   `gorm:"column:net_in_bytes" json:"netInBytes"`
+	NetOutBytes int64   `gorm:"column:net_out_bytes" json:"netOutBytes"`
+	NetInSpeed  int64   `gorm:"column:net_in_speed" json:"netInSpeed"`
+	NetOutSpeed int64   `gorm:"column:net_out_speed" json:"netOutSpeed"`
+	Load1       float64 `gorm:"column:load1" json:"load1"`
+	Load5       float64 `gorm:"column:load5" json:"load5"`
+	Load15      float64 `gorm:"column:load15" json:"load15"`
+	TCPConns    int64   `gorm:"column:tcp_conns" json:"tcpConns"`
+	UDPConns    int64   `gorm:"column:udp_conns" json:"udpConns"`
+	Uptime      int64   `gorm:"column:uptime" json:"uptime"`
+}
+
+func (NodeMetric) TableName() string { return "node_metric" }
+
+type TunnelMetric struct {
+	ID           int64   `gorm:"primaryKey;autoIncrement" json:"id"`
+	TunnelID     int64   `gorm:"column:tunnel_id;not null;uniqueIndex:idx_tunnel_metric_tunnel_time,priority:1" json:"tunnelId"`
+	NodeID       int64   `gorm:"column:node_id;not null;uniqueIndex:idx_tunnel_metric_tunnel_time,priority:2" json:"nodeId"`
+	Timestamp    int64   `gorm:"not null;uniqueIndex:idx_tunnel_metric_tunnel_time,priority:3;index:idx_tunnel_metric_time" json:"timestamp"`
+	BytesIn      int64   `gorm:"column:bytes_in" json:"bytesIn"`
+	BytesOut     int64   `gorm:"column:bytes_out" json:"bytesOut"`
+	Connections  int64   `gorm:"column:connections" json:"connections"`
+	Errors       int64   `gorm:"column:errors" json:"errors"`
+	AvgLatencyMs float64 `gorm:"column:avg_latency_ms" json:"avgLatencyMs"`
+}
+
+func (TunnelMetric) TableName() string { return "tunnel_metric" }
+
+type ServiceMonitor struct {
+	ID          int64  `gorm:"primaryKey;autoIncrement" json:"id"`
+	Name        string `gorm:"type:varchar(100);not null" json:"name"`
+	Type        string `gorm:"type:varchar(20);not null" json:"type"`
+	Target      string `gorm:"type:text;not null" json:"target"`
+	IntervalSec int    `gorm:"column:interval_sec;not null;default:60" json:"intervalSec"`
+	TimeoutSec  int    `gorm:"column:timeout_sec;not null;default:5" json:"timeoutSec"`
+	NodeID      int64  `gorm:"column:node_id;index" json:"nodeId"`
+	Enabled     int    `gorm:"not null;default:1" json:"enabled"`
+	CreatedTime int64  `gorm:"column:created_time;not null" json:"createdTime"`
+	UpdatedTime int64  `gorm:"column:updated_time;not null" json:"updatedTime"`
+}
+
+func (ServiceMonitor) TableName() string { return "service_monitor" }
+
+type ServiceMonitorResult struct {
+	ID           int64   `gorm:"primaryKey;autoIncrement" json:"id"`
+	MonitorID    int64   `gorm:"column:monitor_id;not null;index:idx_monitor_result_monitor_time,priority:1" json:"monitorId"`
+	NodeID       int64   `gorm:"column:node_id;not null;index" json:"nodeId"`
+	Timestamp    int64   `gorm:"not null;index:idx_monitor_result_monitor_time,priority:2" json:"timestamp"`
+	Success      int     `gorm:"not null" json:"success"`
+	LatencyMs    float64 `gorm:"column:latency_ms" json:"latencyMs"`
+	StatusCode   int     `gorm:"column:status_code" json:"statusCode"`
+	ErrorMessage string  `gorm:"column:error_message;type:text" json:"errorMessage"`
+}
+
+func (ServiceMonitorResult) TableName() string { return "service_monitor_result" }
+
+// TunnelQuality stores periodic probe results for a tunnel.
+// Unlike the old upsert model, rows accumulate for history/charting.
+// Old rows are pruned periodically (default: keep 24h).
+type TunnelQuality struct {
+	ID                 int64   `gorm:"primaryKey;autoIncrement" json:"id"`
+	TunnelID           int64   `gorm:"column:tunnel_id;not null;index:idx_tunnel_quality_tunnel_time,priority:1" json:"tunnelId"`
+	EntryToExitLatency float64 `gorm:"column:entry_to_exit_latency" json:"entryToExitLatency"`
+	ExitToBingLatency  float64 `gorm:"column:exit_to_bing_latency" json:"exitToBingLatency"`
+	EntryToExitLoss    float64 `gorm:"column:entry_to_exit_loss" json:"entryToExitLoss"`
+	ExitToBingLoss     float64 `gorm:"column:exit_to_bing_loss" json:"exitToBingLoss"`
+	Success            int     `gorm:"not null;default:1" json:"success"`
+	ErrorMessage       string  `gorm:"column:error_message;type:text" json:"errorMessage,omitempty"`
+	Timestamp          int64   `gorm:"not null;index:idx_tunnel_quality_tunnel_time,priority:2;index:idx_tunnel_quality_time" json:"timestamp"`
+	ChainDetails       string  `gorm:"column:chain_details;type:text" json:"chainDetails,omitempty"`
+}
+
+func (TunnelQuality) TableName() string { return "tunnel_quality" }

go-backend/internal/store/repo/repository_control.go

@@ -0,0 +1,397 @@
+package repo
+
+import (
+	"database/sql"
+	"errors"
+	"fmt"
+	"strconv"
+	"strings"
+
+	"gorm.io/gorm"
+
+	"go-backend/internal/store/model"
+)
+
+func (r *Repository) UserTunnelExistsByUserAndTunnel(userID, tunnelID int64) (bool, error) {
+	if r == nil || r.db == nil {
+		return false, errors.New("repository not initialized")
+	}
+	var count int64
+	err := r.db.Model(&model.UserTunnel{}).
+		Where("user_id = ? AND tunnel_id = ? AND status = 1", userID, tunnelID).
+		Count(&count).Error
+	if err != nil {
+		return false, err
+	}
+	return count > 0, nil
+}
+
+func (r *Repository) ListForwardsByTunnel(tunnelID int64) ([]model.ForwardRecord, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	return r.ListForwardsByTunnelTx(r.db, tunnelID)
+}
+
+func (r *Repository) ListForwardsByTunnelTx(tx *gorm.DB, tunnelID int64) ([]model.ForwardRecord, error) {
+	if tx == nil {
+		return nil, errors.New("database unavailable")
+	}
+	var forwards []model.Forward
+	err := tx.Where("tunnel_id = ?", tunnelID).Order("id ASC").Find(&forwards).Error
+	if err != nil {
+		return nil, err
+	}
+	rows := make([]model.ForwardRecord, 0, len(forwards))
+	for _, f := range forwards {
+		rows = append(rows, model.ForwardRecord{
+			ID:         f.ID,
+			UserID:     f.UserID,
+			UserName:   f.UserName,
+			Name:       f.Name,
+			TunnelID:   f.TunnelID,
+			RemoteAddr: f.RemoteAddr,
+			Strategy:   f.Strategy,
+			Status:     f.Status,
+			SpeedID:    f.SpeedID,
+		})
+	}
+	for i := range rows {
+		if strings.TrimSpace(rows[i].Strategy) == "" {
+			rows[i].Strategy = "fifo"
+		}
+	}
+	return rows, nil
+}
+
+
+func (r *Repository) ListActiveTunnelIDsByNode(nodeID int64) ([]int64, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var ids []int64
+	err := r.db.Model(&model.ChainTunnel{}).
+		Joins("JOIN tunnel ON tunnel.id = chain_tunnel.tunnel_id").
+		Where("chain_tunnel.node_id = ? AND tunnel.status = 1", nodeID).
+		Select("DISTINCT chain_tunnel.tunnel_id").
+		Order("chain_tunnel.tunnel_id ASC").
+		Pluck("chain_tunnel.tunnel_id", &ids).Error
+	if err != nil {
+		return nil, err
+	}
+	return ids, nil
+}
+
+func (r *Repository) ListActiveForwardIDsByNode(nodeID int64) ([]int64, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var ids []int64
+	err := r.db.Model(&model.ForwardPort{}).
+		Joins("JOIN forward ON forward.id = forward_port.forward_id").
+		Where("forward_port.node_id = ? AND forward.status = 1", nodeID).
+		Select("DISTINCT forward_port.forward_id").
+		Order("forward_port.forward_id ASC").
+		Pluck("forward_port.forward_id", &ids).Error
+	if err != nil {
+		return nil, err
+	}
+	return ids, nil
+}
+
+func (r *Repository) ListForwardPorts(forwardID int64) ([]model.ForwardPortRecord, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	return r.ListForwardPortsTx(r.db, forwardID)
+}
+
+func (r *Repository) ListForwardPortsTx(tx *gorm.DB, forwardID int64) ([]model.ForwardPortRecord, error) {
+	if tx == nil {
+		return nil, errors.New("database unavailable")
+	}
+	var ports []model.ForwardPort
+	err := tx.Where("forward_id = ?", forwardID).Order("id ASC").Find(&ports).Error
+	if err != nil {
+		return nil, err
+	}
+	rows := make([]model.ForwardPortRecord, 0, len(ports))
+	for _, p := range ports {
+		inIP := ""
+		if p.InIP.Valid {
+			inIP = p.InIP.String
+		}
+		rows = append(rows, model.ForwardPortRecord{NodeID: p.NodeID, Port: p.Port, InIP: inIP})
+	}
+	return rows, nil
+}
+
+
+func (r *Repository) HasOtherForwardOnNodePort(nodeID int64, port int, currentForwardID int64) (bool, error) {
+	if r == nil || r.db == nil {
+		return false, errors.New("repository not initialized")
+	}
+	return r.HasOtherForwardOnNodePortTx(r.db, nodeID, port, currentForwardID)
+}
+
+func (r *Repository) HasOtherForwardOnNodePortTx(tx *gorm.DB, nodeID int64, port int, currentForwardID int64) (bool, error) {
+	if tx == nil {
+		return false, errors.New("database unavailable")
+	}
+	if nodeID <= 0 || port <= 0 {
+		return false, nil
+	}
+
+	var count int64
+	err := tx.Model(&model.ForwardPort{}).
+		Where("node_id = ? AND port = ? AND forward_id <> ?", nodeID, port, currentForwardID).
+		Count(&count).Error
+	if err != nil {
+		return false, err
+	}
+
+	return count > 0, nil
+}
+
+
+func (r *Repository) GetTunnelOutProtocol(tunnelID int64) (string, error) {
+	if r == nil || r.db == nil {
+		return "", errors.New("repository not initialized")
+	}
+	var ct model.ChainTunnel
+	err := r.db.Select("protocol").
+		Where("tunnel_id = ? AND chain_type = ?", tunnelID, "3").
+		Order("id ASC").
+		Take(&ct).Error
+	if err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return "", nil
+		}
+		return "", err
+	}
+	if ct.Protocol.Valid {
+		return ct.Protocol.String, nil
+	}
+	return "", nil
+}
+
+func (r *Repository) GetNodeRecord(nodeID int64) (*model.NodeRecord, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var n model.Node
+	err := r.db.Where("id = ?", nodeID).First(&n).Error
+	if errors.Is(err, gorm.ErrRecordNotFound) {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, err
+	}
+	return nodeRecordFromModel(&n), nil
+}
+
+func (r *Repository) GetNodeRecordTx(tx *gorm.DB, nodeID int64) (*model.NodeRecord, error) {
+	if tx == nil {
+		return nil, errors.New("database unavailable")
+	}
+	var n model.Node
+	err := tx.Where("id = ?", nodeID).First(&n).Error
+	if errors.Is(err, gorm.ErrRecordNotFound) {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, err
+	}
+	return nodeRecordFromModel(&n), nil
+}
+
+func nodeRecordFromModel(n *model.Node) *model.NodeRecord {
+	if n == nil {
+		return nil
+	}
+	rec := &model.NodeRecord{
+		ID:            n.ID,
+		Name:          n.Name,
+		ServerIP:      n.ServerIP,
+		Status:        n.Status,
+		PortRange:     n.Port,
+		TCPListenAddr: n.TCPListenAddr, UDPListenAddr: n.UDPListenAddr,
+		IsRemote: n.IsRemote,
+	}
+	if n.ServerIPV4.Valid {
+		rec.ServerIPv4 = strings.TrimSpace(n.ServerIPV4.String)
+	}
+	if n.ServerIPV6.Valid {
+		rec.ServerIPv6 = strings.TrimSpace(n.ServerIPV6.String)
+	}
+	if n.ExtraIPs.Valid {
+		rec.ExtraIPs = strings.TrimSpace(n.ExtraIPs.String)
+	}
+	if n.InterfaceName.Valid {
+		rec.InterfaceName = strings.TrimSpace(n.InterfaceName.String)
+	}
+	if n.RemoteURL.Valid {
+		rec.RemoteURL = strings.TrimSpace(n.RemoteURL.String)
+	}
+	if n.RemoteToken.Valid {
+		rec.RemoteToken = strings.TrimSpace(n.RemoteToken.String)
+	}
+	if n.RemoteConfig.Valid {
+		rec.RemoteConfig = strings.TrimSpace(n.RemoteConfig.String)
+	}
+	if rec.TCPListenAddr == "" {
+		rec.TCPListenAddr = "[::]"
+	}
+	if rec.UDPListenAddr == "" {
+		rec.UDPListenAddr = "[::]"
+	}
+	if strings.TrimSpace(rec.Name) == "" {
+		rec.Name = fmt.Sprintf("node_%d", rec.ID)
+	}
+	return rec
+}
+
+func (r *Repository) ResolveUserTunnelAndLimiter(userID, tunnelID int64) (*model.UserTunnelLimiterInfo, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	type row struct {
+		UserTunnelID int64         `gorm:"column:user_tunnel_id"`
+		LimiterID    sql.NullInt64 `gorm:"column:limiter_id"`
+		Speed        sql.NullInt64 `gorm:"column:speed"`
+	}
+	var rec row
+	err := r.db.Model(&model.UserTunnel{}).
+		Select("user_tunnel.id AS user_tunnel_id, speed_limit.id AS limiter_id, speed_limit.speed AS speed").
+		Joins("LEFT JOIN speed_limit ON speed_limit.id = user_tunnel.speed_id").
+		Where("user_tunnel.user_id = ? AND user_tunnel.tunnel_id = ?", userID, tunnelID).
+		Order("user_tunnel.id ASC").
+		Limit(1).
+		Take(&rec).Error
+	if err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return &model.UserTunnelLimiterInfo{}, nil
+		}
+		return nil, err
+	}
+	info := &model.UserTunnelLimiterInfo{UserTunnelID: rec.UserTunnelID}
+	if rec.LimiterID.Valid && rec.LimiterID.Int64 > 0 {
+		v := rec.LimiterID.Int64
+		info.LimiterID = &v
+		s := int(rec.Speed.Int64)
+		info.Speed = &s
+	}
+	return info, nil
+}
+
+func (r *Repository) ListUserTunnelIDs(userID, tunnelID int64) ([]int64, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var ids []int64
+	err := r.db.Model(&model.UserTunnel{}).
+		Where("user_id = ? AND tunnel_id = ?", userID, tunnelID).
+		Order("id ASC").Pluck("id", &ids).Error
+	if err != nil {
+		return nil, err
+	}
+	return ids, nil
+}
+
+func (r *Repository) ListUserTunnelIDsByUser(userID int64) ([]int64, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var ids []int64
+	err := r.db.Model(&model.UserTunnel{}).
+		Where("user_id = ?", userID).
+		Order("id ASC").Pluck("id", &ids).Error
+	if err != nil {
+		return nil, err
+	}
+	return ids, nil
+}
+
+func (r *Repository) GetTunnelName(tunnelID int64) (string, error) {
+	if r == nil || r.db == nil {
+		return "", errors.New("repository not initialized")
+	}
+	var name string
+	err := r.db.Model(&model.Tunnel{}).Where("id = ?", tunnelID).Pluck("name", &name).Error
+	if err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return "", nil
+		}
+		return "", err
+	}
+	return name, nil
+}
+
+func (r *Repository) ListChainNodesForTunnel(tunnelID int64) ([]model.ChainNodeRecord, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	type row struct {
+		ChainType string
+		Inx       sql.NullInt64
+		NodeID    int64
+		Port      sql.NullInt64
+		Name      sql.NullString
+		Protocol  sql.NullString
+		Strategy  sql.NullString
+		ConnectIP sql.NullString
+	}
+	var rows []row
+	err := r.db.Model(&model.ChainTunnel{}).
+		Select("chain_tunnel.chain_type, chain_tunnel.inx, chain_tunnel.node_id, chain_tunnel.port, node.name, chain_tunnel.protocol, chain_tunnel.strategy, chain_tunnel.connect_ip").
+		Joins("LEFT JOIN node ON node.id = chain_tunnel.node_id").
+		Where("chain_tunnel.tunnel_id = ?", tunnelID).
+		Order("chain_tunnel.chain_type ASC, chain_tunnel.inx ASC, chain_tunnel.id ASC").
+		Find(&rows).Error
+	if err != nil {
+		return nil, err
+	}
+	result := make([]model.ChainNodeRecord, 0, len(rows))
+	for _, row := range rows {
+		chainType := 0
+		if v := strings.TrimSpace(row.ChainType); v != "" {
+			if parsed, parseErr := strconv.Atoi(v); parseErr == nil {
+				chainType = parsed
+			}
+		}
+		inx := int64(0)
+		if row.Inx.Valid {
+			inx = row.Inx.Int64
+		}
+		port := 0
+		if row.Port.Valid {
+			port = int(row.Port.Int64)
+		}
+		item := model.ChainNodeRecord{
+			ChainType: chainType,
+			Inx:       inx,
+			NodeID:    row.NodeID,
+			Port:      port,
+		}
+		if strings.TrimSpace(row.Name.String) == "" {
+			item.NodeName = fmt.Sprintf("node_%d", row.NodeID)
+		} else {
+			item.NodeName = row.Name.String
+		}
+		if strings.TrimSpace(row.Protocol.String) == "" {
+			item.Protocol = "tls"
+		} else {
+			item.Protocol = row.Protocol.String
+		}
+		if strings.TrimSpace(row.Strategy.String) == "" {
+			item.Strategy = "round"
+		} else {
+			item.Strategy = row.Strategy.String
+		}
+		if row.ConnectIP.Valid {
+			item.ConnectIP = row.ConnectIP.String
+		}
+		result = append(result, item)
+	}
+	return result, nil
+}

go-backend/internal/store/repo/repository_federation.go

@@ -0,0 +1,294 @@
+package repo
+
+import (
+	"database/sql"
+	"errors"
+
+	"go-backend/internal/store/model"
+
+	"gorm.io/gorm"
+)
+
+// RemoteNodeRow holds the columns fetched for a remote node listing.
+type RemoteNodeRow struct {
+	ID           int64
+	Name         string
+	RemoteURL    sql.NullString
+	RemoteToken  sql.NullString
+	RemoteConfig sql.NullString
+}
+
+// NodeBasicInfo holds name, server_ip, and status for a node.
+type NodeBasicInfo struct {
+	Name     string
+	ServerIP string
+	Status   int
+}
+
+// FederationBindingRow holds the columns for an active federation tunnel binding.
+type FederationBindingRow struct {
+	ID              int64
+	TunnelID        int64
+	TunnelName      string
+	ChainType       int
+	HopInx          int
+	AllocatedPort   int
+	ResourceKey     string
+	RemoteBindingID string
+	UpdatedTime     int64
+}
+
+type ActiveForwardPortRow struct {
+	ForwardID   int64
+	TunnelID    int64
+	TunnelName  string
+	Port        int
+	UpdatedTime int64
+}
+
+// ListRemoteNodes returns all nodes with is_remote=1, ordered by id desc.
+func (r *Repository) ListRemoteNodes() ([]RemoteNodeRow, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var result []RemoteNodeRow
+	err := r.db.Model(&model.Node{}).
+		Select("id, name, remote_url, remote_token, remote_config").
+		Where("is_remote = 1").
+		Order("id DESC").
+		Find(&result).Error
+	if err != nil {
+		return nil, err
+	}
+	if result == nil {
+		result = make([]RemoteNodeRow, 0)
+	}
+	return result, nil
+}
+
+// UpdateNodeRemoteConfig sets the remote_config JSON for a given node.
+func (r *Repository) UpdateNodeRemoteConfig(nodeID int64, configJSON string) error {
+	if r == nil || r.db == nil {
+		return errors.New("repository not initialized")
+	}
+	return r.db.Model(&model.Node{}).Where("id = ?", nodeID).Update("remote_config", configJSON).Error
+}
+
+// ListActiveBindingsForNode returns active federation tunnel bindings for a node.
+func (r *Repository) ListActiveBindingsForNode(nodeID int64) ([]FederationBindingRow, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var result []FederationBindingRow
+	err := r.db.Model(&model.FederationTunnelBinding{}).
+		Select("federation_tunnel_binding.id, federation_tunnel_binding.tunnel_id, COALESCE(tunnel.name, '') AS tunnel_name, federation_tunnel_binding.chain_type, federation_tunnel_binding.hop_inx, federation_tunnel_binding.allocated_port, federation_tunnel_binding.resource_key, federation_tunnel_binding.remote_binding_id, federation_tunnel_binding.updated_time").
+		Joins("LEFT JOIN tunnel ON tunnel.id = federation_tunnel_binding.tunnel_id").
+		Where("federation_tunnel_binding.node_id = ? AND federation_tunnel_binding.status = 1", nodeID).
+		Order("federation_tunnel_binding.allocated_port ASC, federation_tunnel_binding.id ASC").
+		Find(&result).Error
+	if err != nil {
+		return nil, err
+	}
+	if result == nil {
+		result = make([]FederationBindingRow, 0)
+	}
+	return result, nil
+}
+
+func (r *Repository) ListActiveForwardPortsForNode(nodeID int64) ([]ActiveForwardPortRow, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var result []ActiveForwardPortRow
+	err := r.db.Model(&model.ForwardPort{}).
+		Select("forward_port.forward_id, forward.tunnel_id, COALESCE(tunnel.name, '') AS tunnel_name, forward_port.port, forward.updated_time").
+		Joins("JOIN forward ON forward.id = forward_port.forward_id").
+		Joins("LEFT JOIN tunnel ON tunnel.id = forward.tunnel_id").
+		Where("forward_port.node_id = ? AND forward_port.port > 0", nodeID).
+		Order("forward_port.port ASC, forward_port.id ASC").
+		Find(&result).Error
+	if err != nil {
+		return nil, err
+	}
+	if result == nil {
+		result = make([]ActiveForwardPortRow, 0)
+	}
+	return result, nil
+}
+
+// GetNodeBasicInfo returns the name, server_ip, and status for a given node.
+func (r *Repository) GetNodeBasicInfo(nodeID int64) (*NodeBasicInfo, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var n model.Node
+	err := r.db.Select("name", "server_ip", "status").Where("id = ?", nodeID).First(&n).Error
+	if err != nil {
+		return nil, err
+	}
+	return &NodeBasicInfo{Name: n.Name, ServerIP: n.ServerIP, Status: n.Status}, nil
+}
+
+// CreateFederationTunnel creates a tunnel and chain_tunnel entry in a transaction,
+// returning the new tunnel ID.
+func (r *Repository) CreateFederationTunnel(name string, tunnelType int, protocol string, now int64, nodeID int64, remotePort int) (int64, error) {
+	if r == nil || r.db == nil {
+		return 0, errors.New("repository not initialized")
+	}
+	tunnel := model.Tunnel{
+		Name:        name,
+		Type:        tunnelType,
+		Protocol:    protocol,
+		Flow:        0,
+		CreatedTime: now,
+		UpdatedTime: now,
+		Status:      1,
+		InIP:        sql.NullString{String: "", Valid: false},
+	}
+	err := r.db.Transaction(func(tx *gorm.DB) error {
+		if err := tx.Create(&tunnel).Error; err != nil {
+			return err
+		}
+		ct := model.ChainTunnel{
+			TunnelID:  tunnel.ID,
+			ChainType: "1",
+			NodeID:    nodeID,
+			Port:      sql.NullInt64{Int64: int64(remotePort), Valid: true},
+			Strategy:  sql.NullString{String: "fifo", Valid: true},
+			Inx:       sql.NullInt64{Int64: 0, Valid: true},
+			Protocol:  sql.NullString{String: protocol, Valid: true},
+		}
+		if err := tx.Create(&ct).Error; err != nil {
+			return err
+		}
+		return nil
+	})
+	if err != nil {
+		return 0, err
+	}
+	return tunnel.ID, nil
+}
+
+// ListUsedPortsOnNode returns all ports in use on a given node from chain_tunnel and forward_port tables.
+func (r *Repository) ListUsedPortsOnNode(nodeID int64) ([]int, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	used := make(map[int]struct{})
+
+	var chainPorts []int
+	err := r.db.Model(&model.ChainTunnel{}).
+		Where("node_id = ? AND port > 0", nodeID).
+		Pluck("port", &chainPorts).Error
+	if err != nil {
+		return nil, err
+	}
+	for _, p := range chainPorts {
+		if p > 0 {
+			used[p] = struct{}{}
+		}
+	}
+
+	var forwardPorts []int
+	err = r.db.Model(&model.ForwardPort{}).
+		Where("node_id = ? AND port > 0", nodeID).
+		Pluck("port", &forwardPorts).Error
+	if err != nil {
+		return nil, err
+	}
+	for _, p := range forwardPorts {
+		if p > 0 {
+			used[p] = struct{}{}
+		}
+	}
+
+	result := make([]int, 0, len(used))
+	for p := range used {
+		result = append(result, p)
+	}
+	return result, nil
+}
+
+// ListTunnelIDsByNamePrefix returns all tunnel IDs whose name starts with the given prefix.
+func (r *Repository) ListTunnelIDsByNamePrefix(prefix string) ([]int64, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var ids []int64
+	err := r.db.Model(&model.Tunnel{}).
+		Where("name LIKE ?", prefix+"%").
+		Order("id ASC").
+		Pluck("id", &ids).Error
+	if err != nil {
+		return nil, err
+	}
+	if ids == nil {
+		ids = make([]int64, 0)
+	}
+	return ids, nil
+}
+
+func (r *Repository) NextIndex(table string) int {
+	if r == nil || r.db == nil {
+		return 0
+	}
+	var modelRef interface{}
+	switch table {
+	case "node":
+		modelRef = &model.Node{}
+	case "tunnel":
+		modelRef = &model.Tunnel{}
+	case "forward":
+		modelRef = &model.Forward{}
+	default:
+		return 0
+	}
+
+	type inxRow struct {
+		Inx int
+	}
+	var row inxRow
+	err := r.db.Model(modelRef).
+		Select("inx").
+		Order("inx ASC, id ASC").
+		Limit(1).
+		Take(&row).Error
+	if errors.Is(err, gorm.ErrRecordNotFound) {
+		return 0
+	}
+	if err != nil {
+		return 0
+	}
+	return row.Inx - 1
+}
+
+// CreateRemoteNode inserts a new remote node.
+func (r *Repository) CreateRemoteNode(name, secret, serverIP, portRange string, now int64, status int, inx int, remoteURL, remoteToken, remoteConfigJSON string) error {
+	if r == nil || r.db == nil {
+		return errors.New("repository not initialized")
+	}
+	node := model.Node{
+		Name:          name,
+		Secret:        secret,
+		ServerIP:      serverIP,
+		ServerIPV4:    sql.NullString{},
+		ServerIPV6:    sql.NullString{},
+		Port:          portRange,
+		InterfaceName: sql.NullString{},
+		Version:       sql.NullString{},
+		HTTP:          0,
+		TLS:           0,
+		Socks:         0,
+		CreatedTime:   now,
+		UpdatedTime:   sql.NullInt64{Int64: now, Valid: true},
+		Status:        status,
+		TCPListenAddr: "[::]",
+		UDPListenAddr: "[::]",
+		Inx:           inx,
+		IsRemote:      1,
+		RemoteURL:     sql.NullString{String: remoteURL, Valid: remoteURL != ""},
+		RemoteToken:   sql.NullString{String: remoteToken, Valid: remoteToken != ""},
+		RemoteConfig:  sql.NullString{String: remoteConfigJSON, Valid: remoteConfigJSON != ""},
+	}
+	return r.db.Create(&node).Error
+}

go-backend/internal/store/repo/repository_flow.go

@@ -0,0 +1,293 @@
+package repo
+
+import (
+	"errors"
+	"strings"
+
+	"gorm.io/gorm"
+
+	"go-backend/internal/store/model"
+)
+
+func (r *Repository) UpdateForwardStatus(forwardID int64, status int, now int64) error {
+	if r == nil || r.db == nil {
+		return errors.New("repository not initialized")
+	}
+	return r.db.Model(&model.Forward{}).Where("id = ?", forwardID).Updates(map[string]interface{}{
+		"status": status, "updated_time": now,
+	}).Error
+}
+
+func (r *Repository) ListActiveForwardsByUser(userID int64) ([]model.ForwardRecord, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var forwards []model.Forward
+	err := r.db.Where("user_id = ? AND status = 1", userID).Order("id ASC").Find(&forwards).Error
+	if err != nil {
+		return nil, err
+	}
+	rows := make([]model.ForwardRecord, 0, len(forwards))
+	for _, f := range forwards {
+		rows = append(rows, model.ForwardRecord{
+			ID:         f.ID,
+			UserID:     f.UserID,
+			UserName:   f.UserName,
+			Name:       f.Name,
+			TunnelID:   f.TunnelID,
+			RemoteAddr: f.RemoteAddr,
+			Strategy:   f.Strategy,
+			Status:     f.Status,
+			SpeedID:    f.SpeedID,
+		})
+	}
+	for i := range rows {
+		if strings.TrimSpace(rows[i].Strategy) == "" {
+			rows[i].Strategy = "fifo"
+		}
+	}
+	return rows, nil
+}
+
+func (r *Repository) ListActiveForwardsByUserTunnel(userID, tunnelID int64) ([]model.ForwardRecord, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var forwards []model.Forward
+	err := r.db.Where("user_id = ? AND tunnel_id = ? AND status = 1", userID, tunnelID).Order("id ASC").Find(&forwards).Error
+	if err != nil {
+		return nil, err
+	}
+	rows := make([]model.ForwardRecord, 0, len(forwards))
+	for _, f := range forwards {
+		rows = append(rows, model.ForwardRecord{
+			ID:         f.ID,
+			UserID:     f.UserID,
+			UserName:   f.UserName,
+			Name:       f.Name,
+			TunnelID:   f.TunnelID,
+			RemoteAddr: f.RemoteAddr,
+			Strategy:   f.Strategy,
+			Status:     f.Status,
+			SpeedID:    f.SpeedID,
+		})
+	}
+	for i := range rows {
+		if strings.TrimSpace(rows[i].Strategy) == "" {
+			rows[i].Strategy = "fifo"
+		}
+	}
+	return rows, nil
+}
+
+func (r *Repository) ListForwardsByUserAndTunnel(userID, tunnelID int64) ([]model.ForwardRecord, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var forwards []model.Forward
+	err := r.db.Where("user_id = ? AND tunnel_id = ?", userID, tunnelID).Order("id ASC").Find(&forwards).Error
+	if err != nil {
+		return nil, err
+	}
+	rows := make([]model.ForwardRecord, 0, len(forwards))
+	for _, f := range forwards {
+		rows = append(rows, model.ForwardRecord{
+			ID:         f.ID,
+			UserID:     f.UserID,
+			UserName:   f.UserName,
+			Name:       f.Name,
+			TunnelID:   f.TunnelID,
+			RemoteAddr: f.RemoteAddr,
+			Strategy:   f.Strategy,
+			Status:     f.Status,
+			SpeedID:    f.SpeedID,
+		})
+	}
+	for i := range rows {
+		if strings.TrimSpace(rows[i].Strategy) == "" {
+			rows[i].Strategy = "fifo"
+		}
+	}
+	return rows, nil
+}
+
+func (r *Repository) GetForwardRecord(forwardID int64) (*model.ForwardRecord, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var f model.Forward
+	err := r.db.Where("id = ?", forwardID).First(&f).Error
+	if err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return nil, nil
+		}
+		return nil, err
+	}
+	fr := model.ForwardRecord{
+		ID:         f.ID,
+		UserID:     f.UserID,
+		UserName:   f.UserName,
+		Name:       f.Name,
+		TunnelID:   f.TunnelID,
+		RemoteAddr: f.RemoteAddr,
+		Strategy:   f.Strategy,
+		Status:     f.Status,
+		SpeedID:    f.SpeedID,
+	}
+	if strings.TrimSpace(fr.Strategy) == "" {
+		fr.Strategy = "fifo"
+	}
+	return &fr, nil
+}
+
+func (r *Repository) GetTunnelRecord(tunnelID int64) (*model.TunnelRecord, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var t model.Tunnel
+	err := r.db.Where("id = ?", tunnelID).First(&t).Error
+	if err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return nil, nil
+		}
+		return nil, err
+	}
+	tr := model.TunnelRecord{
+		ID:           t.ID,
+		Type:         t.Type,
+		Status:       t.Status,
+		Flow:         t.Flow,
+		TrafficRatio: t.TrafficRatio,
+	}
+	if tr.Flow <= 0 {
+		tr.Flow = 1
+	}
+	if tr.TrafficRatio <= 0 {
+		tr.TrafficRatio = 1
+	}
+	return &tr, nil
+}
+
+func (r *Repository) TunnelExists(tunnelID int64) (bool, error) {
+	if r == nil || r.db == nil {
+		return false, errors.New("repository not initialized")
+	}
+	var count int64
+	err := r.db.Model(&model.Tunnel{}).Where("id = ?", tunnelID).Count(&count).Error
+	if err != nil {
+		return false, err
+	}
+	return count > 0, nil
+}
+
+func (r *Repository) ForwardExists(forwardID int64) (bool, error) {
+	if r == nil || r.db == nil {
+		return false, errors.New("repository not initialized")
+	}
+	var count int64
+	err := r.db.Model(&model.Forward{}).Where("id = ?", forwardID).Count(&count).Error
+	if err != nil {
+		return false, err
+	}
+	return count > 0, nil
+}
+
+// MapForwardIDsToTunnelIDs returns a mapping from forward.id to forward.tunnel_id.
+// Missing forward IDs are omitted from the returned map.
+func (r *Repository) MapForwardIDsToTunnelIDs(forwardIDs []int64) (map[int64]int64, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	if len(forwardIDs) == 0 {
+		return map[int64]int64{}, nil
+	}
+
+	// Deduplicate and filter invalid IDs.
+	ids := make([]int64, 0, len(forwardIDs))
+	seen := make(map[int64]struct{}, len(forwardIDs))
+	for _, id := range forwardIDs {
+		if id <= 0 {
+			continue
+		}
+		if _, ok := seen[id]; ok {
+			continue
+		}
+		seen[id] = struct{}{}
+		ids = append(ids, id)
+	}
+	if len(ids) == 0 {
+		return map[int64]int64{}, nil
+	}
+
+	type row struct {
+		ID       int64 `gorm:"column:id"`
+		TunnelID int64 `gorm:"column:tunnel_id"`
+	}
+
+	out := make(map[int64]int64, len(ids))
+	const chunkSize = 500
+	for start := 0; start < len(ids); start += chunkSize {
+		end := start + chunkSize
+		if end > len(ids) {
+			end = len(ids)
+		}
+
+		var rows []row
+		if err := r.db.Model(&model.Forward{}).
+			Select("id", "tunnel_id").
+			Where("id IN ?", ids[start:end]).
+			Find(&rows).Error; err != nil {
+			return nil, err
+		}
+		for _, r := range rows {
+			if r.ID <= 0 || r.TunnelID <= 0 {
+				continue
+			}
+			out[r.ID] = r.TunnelID
+		}
+	}
+
+	return out, nil
+}
+
+func (r *Repository) SpeedLimitExists(id int64) (bool, error) {
+	if r == nil || r.db == nil {
+		return false, errors.New("repository not initialized")
+	}
+	var count int64
+	err := r.db.Model(&model.SpeedLimit{}).Where("id = ?", id).Count(&count).Error
+	if err != nil {
+		return false, err
+	}
+	return count > 0, nil
+}
+
+func (r *Repository) CountActiveForwardsByUser(userID int64) (int64, error) {
+	if r == nil || r.db == nil {
+		return 0, errors.New("repository not initialized")
+	}
+	var count int64
+	err := r.db.Model(&model.Forward{}).Where("user_id = ? AND status = 1", userID).Count(&count).Error
+	return count, err
+}
+
+func (r *Repository) CountActiveForwardsByUserTunnel(userID, tunnelID int64) (int64, error) {
+	if r == nil || r.db == nil {
+		return 0, errors.New("repository not initialized")
+	}
+	var count int64
+	err := r.db.Model(&model.Forward{}).Where("user_id = ? AND tunnel_id = ? AND status = 1", userID, tunnelID).Count(&count).Error
+	return count, err
+}
+
+func (r *Repository) GetSpeedLimitSpeed(id int64) (int, error) {
+	if r == nil || r.db == nil {
+		return 0, errors.New("repository not initialized")
+	}
+	var sl model.SpeedLimit
+	err := r.db.Select("speed").Where("id = ?", id).First(&sl).Error
+	if err != nil {
+		return 0, err
+	}
+	return sl.Speed, nil
+}

go-backend/internal/store/repo/repository_groups.go

@@ -0,0 +1,78 @@
+package repo
+
+import (
+	"errors"
+
+	"go-backend/internal/store/model"
+)
+
+// ─── Semantic Group Queries (replacing QueryInt64List/QueryPairs passthrough) ─
+
+// ListUserIDsByUserGroup returns all user IDs belonging to a user group.
+func (r *Repository) ListUserIDsByUserGroup(userGroupID int64) ([]int64, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var ids []int64
+	err := r.db.Model(&model.UserGroupUser{}).
+		Where("user_group_id = ?", userGroupID).
+		Pluck("user_id", &ids).Error
+	return ids, err
+}
+
+// ListTunnelIDsByTunnelGroup returns all tunnel IDs belonging to a tunnel group.
+func (r *Repository) ListTunnelIDsByTunnelGroup(tunnelGroupID int64) ([]int64, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var ids []int64
+	err := r.db.Model(&model.TunnelGroupTunnel{}).
+		Where("tunnel_group_id = ?", tunnelGroupID).
+		Pluck("tunnel_id", &ids).Error
+	return ids, err
+}
+
+// ListGroupPermissionPairsByUserGroup returns [userGroupID, tunnelGroupID] pairs
+// for all group permissions associated with a user group.
+func (r *Repository) ListGroupPermissionPairsByUserGroup(userGroupID int64) ([][2]int64, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var perms []model.GroupPermission
+	err := r.db.Where("user_group_id = ?", userGroupID).Find(&perms).Error
+	if err != nil {
+		return nil, err
+	}
+	result := make([][2]int64, len(perms))
+	for i, p := range perms {
+		result[i] = [2]int64{p.UserGroupID, p.TunnelGroupID}
+	}
+	return result, err
+}
+
+func (r *Repository) GetUserGroupIDsByUserID(userID int64) ([]int64, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var ids []int64
+	err := r.db.Model(&model.UserGroupUser{}).
+		Where("user_id = ?", userID).
+		Pluck("user_group_id", &ids).Error
+	return ids, err
+}
+
+func (r *Repository) ListGroupPermissionPairsByTunnelGroup(tunnelGroupID int64) ([][2]int64, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var perms []model.GroupPermission
+	err := r.db.Where("tunnel_group_id = ?", tunnelGroupID).Find(&perms).Error
+	if err != nil {
+		return nil, err
+	}
+	result := make([][2]int64, len(perms))
+	for i, p := range perms {
+		result[i] = [2]int64{p.UserGroupID, p.TunnelGroupID}
+	}
+	return result, err
+}

go-backend/internal/store/repo/repository_migrate_test.go

@@ -0,0 +1,412 @@
+package repo
+
+import (
+	"database/sql"
+	"errors"
+	"strings"
+	"testing"
+
+	gsqlite "github.com/glebarez/sqlite"
+	"go-backend/internal/store/model"
+	"gorm.io/gorm"
+	"gorm.io/gorm/logger"
+)
+
+func TestPrepareSQLiteLegacyColumnsAddsNodeMetadataColumns(t *testing.T) {
+	db, err := gorm.Open(gsqlite.Open(":memory:"), &gorm.Config{
+		Logger: logger.Default.LogMode(logger.Silent),
+	})
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	t.Cleanup(func() {
+		sqlDB, _ := db.DB()
+		if sqlDB != nil {
+			_ = sqlDB.Close()
+		}
+	})
+
+	if err := db.Exec(`
+		CREATE TABLE node (
+			id INTEGER PRIMARY KEY AUTOINCREMENT,
+			name VARCHAR(100) NOT NULL,
+			secret VARCHAR(100) NOT NULL,
+			server_ip VARCHAR(100) NOT NULL,
+			port TEXT NOT NULL,
+			interface_name VARCHAR(200),
+			version VARCHAR(100),
+			http INTEGER NOT NULL DEFAULT 0,
+			tls INTEGER NOT NULL DEFAULT 0,
+			socks INTEGER NOT NULL DEFAULT 0,
+			created_time INTEGER NOT NULL,
+			updated_time INTEGER,
+			status INTEGER NOT NULL
+		)
+	`).Error; err != nil {
+		t.Fatalf("create legacy node table: %v", err)
+	}
+
+	if err := prepareSQLiteLegacyColumns(db); err != nil {
+		t.Fatalf("prepareSQLiteLegacyColumns: %v", err)
+	}
+
+	m := db.Migrator()
+	for _, field := range []string{"Remark", "ExpiryTime", "RenewalCycle"} {
+		if !m.HasColumn(&model.Node{}, field) {
+			t.Fatalf("expected node.%s column to exist", field)
+		}
+	}
+}
+
+func TestMigrateSchemaRunsPostgresIDRepairEvenAtCurrentVersion(t *testing.T) {
+	db, err := gorm.Open(gsqlite.Open(":memory:"), &gorm.Config{
+		Logger: logger.Default.LogMode(logger.Silent),
+	})
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	t.Cleanup(func() {
+		sqlDB, _ := db.DB()
+		if sqlDB != nil {
+			_ = sqlDB.Close()
+		}
+	})
+
+	if err := db.Exec(`CREATE TABLE schema_version (version INTEGER NOT NULL DEFAULT 0)`).Error; err != nil {
+		t.Fatalf("create schema_version: %v", err)
+	}
+	if err := db.Exec(`INSERT INTO schema_version(version) VALUES(?)`, currentSchemaVersion).Error; err != nil {
+		t.Fatalf("seed schema_version: %v", err)
+	}
+
+	called := 0
+	original := ensurePostgresIDDefaultsFn
+	ensurePostgresIDDefaultsFn = func(db *gorm.DB) error {
+		called++
+		return nil
+	}
+	t.Cleanup(func() {
+		ensurePostgresIDDefaultsFn = original
+	})
+
+	if err := migrateSchema(db); err != nil {
+		t.Fatalf("migrateSchema: %v", err)
+	}
+	if called != 1 {
+		t.Fatalf("expected postgres id repair to run once, got %d", called)
+	}
+}
+
+func TestMigrateSchemaReturnsPostgresIDRepairError(t *testing.T) {
+	db, err := gorm.Open(gsqlite.Open(":memory:"), &gorm.Config{
+		Logger: logger.Default.LogMode(logger.Silent),
+	})
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	t.Cleanup(func() {
+		sqlDB, _ := db.DB()
+		if sqlDB != nil {
+			_ = sqlDB.Close()
+		}
+	})
+
+	if err := db.Exec(`CREATE TABLE schema_version (version INTEGER NOT NULL DEFAULT 0)`).Error; err != nil {
+		t.Fatalf("create schema_version: %v", err)
+	}
+	if err := db.Exec(`INSERT INTO schema_version(version) VALUES(?)`, currentSchemaVersion).Error; err != nil {
+		t.Fatalf("seed schema_version: %v", err)
+	}
+
+	wantErr := errors.New("repair failed")
+	original := ensurePostgresIDDefaultsFn
+	ensurePostgresIDDefaultsFn = func(db *gorm.DB) error {
+		return wantErr
+	}
+	t.Cleanup(func() {
+		ensurePostgresIDDefaultsFn = original
+	})
+
+	err = migrateSchema(db)
+	if !errors.Is(err, wantErr) {
+		t.Fatalf("expected error %v, got %v", wantErr, err)
+	}
+}
+
+func TestMigrateSchemaRunsViteConfigValueMigrationForLegacySchema(t *testing.T) {
+	db, err := gorm.Open(gsqlite.Open(":memory:"), &gorm.Config{
+		Logger: logger.Default.LogMode(logger.Silent),
+	})
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	t.Cleanup(func() {
+		sqlDB, _ := db.DB()
+		if sqlDB != nil {
+			_ = sqlDB.Close()
+		}
+	})
+
+	if err := db.Exec(`CREATE TABLE schema_version (version INTEGER NOT NULL DEFAULT 0)`).Error; err != nil {
+		t.Fatalf("create schema_version: %v", err)
+	}
+	if err := db.Exec(`INSERT INTO schema_version(version) VALUES(?)`, 2).Error; err != nil {
+		t.Fatalf("seed schema_version: %v", err)
+	}
+
+	originalIDRepair := ensurePostgresIDDefaultsFn
+	ensurePostgresIDDefaultsFn = func(db *gorm.DB) error {
+		return nil
+	}
+	t.Cleanup(func() {
+		ensurePostgresIDDefaultsFn = originalIDRepair
+	})
+
+	called := 0
+	originalMigrate := migrateViteConfigValueColumnTypeFn
+	migrateViteConfigValueColumnTypeFn = func(db *gorm.DB) error {
+		called++
+		return nil
+	}
+	t.Cleanup(func() {
+		migrateViteConfigValueColumnTypeFn = originalMigrate
+	})
+
+	if err := migrateSchema(db); err != nil {
+		t.Fatalf("migrateSchema: %v", err)
+	}
+
+	if called != 1 {
+		t.Fatalf("expected vite_config migration to run once, got %d", called)
+	}
+}
+
+func TestMigrateSchemaReturnsViteConfigMigrationError(t *testing.T) {
+	db, err := gorm.Open(gsqlite.Open(":memory:"), &gorm.Config{
+		Logger: logger.Default.LogMode(logger.Silent),
+	})
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	t.Cleanup(func() {
+		sqlDB, _ := db.DB()
+		if sqlDB != nil {
+			_ = sqlDB.Close()
+		}
+	})
+
+	if err := db.Exec(`CREATE TABLE schema_version (version INTEGER NOT NULL DEFAULT 0)`).Error; err != nil {
+		t.Fatalf("create schema_version: %v", err)
+	}
+	if err := db.Exec(`INSERT INTO schema_version(version) VALUES(?)`, 2).Error; err != nil {
+		t.Fatalf("seed schema_version: %v", err)
+	}
+
+	originalIDRepair := ensurePostgresIDDefaultsFn
+	ensurePostgresIDDefaultsFn = func(db *gorm.DB) error {
+		return nil
+	}
+	t.Cleanup(func() {
+		ensurePostgresIDDefaultsFn = originalIDRepair
+	})
+
+	wantErr := errors.New("vite config migration failed")
+	originalMigrate := migrateViteConfigValueColumnTypeFn
+	migrateViteConfigValueColumnTypeFn = func(db *gorm.DB) error {
+		return wantErr
+	}
+	t.Cleanup(func() {
+		migrateViteConfigValueColumnTypeFn = originalMigrate
+	})
+
+	err = migrateSchema(db)
+	if !errors.Is(err, wantErr) {
+		t.Fatalf("expected error %v, got %v", wantErr, err)
+	}
+}
+
+func TestMigrateSchemaClearsSpeedLimitTunnelBinding(t *testing.T) {
+	db, err := gorm.Open(gsqlite.Open(":memory:"), &gorm.Config{
+		Logger: logger.Default.LogMode(logger.Silent),
+	})
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	t.Cleanup(func() {
+		sqlDB, _ := db.DB()
+		if sqlDB != nil {
+			_ = sqlDB.Close()
+		}
+	})
+
+	if err := db.Exec(`CREATE TABLE schema_version (version INTEGER NOT NULL DEFAULT 0)`).Error; err != nil {
+		t.Fatalf("create schema_version: %v", err)
+	}
+	if err := db.Exec(`INSERT INTO schema_version(version) VALUES(?)`, 3).Error; err != nil {
+		t.Fatalf("seed schema_version: %v", err)
+	}
+	if err := db.Exec(`
+		CREATE TABLE speed_limit (
+			id INTEGER PRIMARY KEY AUTOINCREMENT,
+			name VARCHAR(100) NOT NULL,
+			speed INTEGER NOT NULL,
+			tunnel_id INTEGER,
+			tunnel_name VARCHAR(100),
+			created_time INTEGER NOT NULL,
+			updated_time INTEGER,
+			status INTEGER NOT NULL
+		)
+	`).Error; err != nil {
+		t.Fatalf("create speed_limit: %v", err)
+	}
+	if err := db.Exec(`
+		INSERT INTO speed_limit(name, speed, tunnel_id, tunnel_name, created_time, updated_time, status)
+		VALUES(?, ?, ?, ?, ?, ?, ?)
+	`, "legacy-speed-limit", 100, 101, "legacy-tunnel", 1, 1, 1).Error; err != nil {
+		t.Fatalf("seed speed_limit: %v", err)
+	}
+
+	originalIDRepair := ensurePostgresIDDefaultsFn
+	ensurePostgresIDDefaultsFn = func(db *gorm.DB) error {
+		return nil
+	}
+	t.Cleanup(func() {
+		ensurePostgresIDDefaultsFn = originalIDRepair
+	})
+
+	if err := migrateSchema(db); err != nil {
+		t.Fatalf("migrateSchema: %v", err)
+	}
+
+	var tunnelID sql.NullInt64
+	var tunnelName sql.NullString
+	if err := db.Raw(`SELECT tunnel_id, tunnel_name FROM speed_limit WHERE name = ?`, "legacy-speed-limit").Row().Scan(&tunnelID, &tunnelName); err != nil {
+		t.Fatalf("query speed_limit: %v", err)
+	}
+	if tunnelID.Valid {
+		t.Fatalf("expected tunnel_id cleared to NULL, got %d", tunnelID.Int64)
+	}
+	if tunnelName.Valid {
+		t.Fatalf("expected tunnel_name cleared to NULL, got %q", tunnelName.String)
+	}
+
+	var schemaVersion int
+	if err := db.Raw(`SELECT version FROM schema_version LIMIT 1`).Row().Scan(&schemaVersion); err != nil {
+		t.Fatalf("query schema_version: %v", err)
+	}
+	if schemaVersion != currentSchemaVersion {
+		t.Fatalf("expected schema version %d, got %d", currentSchemaVersion, schemaVersion)
+	}
+}
+
+func TestMigrateSchemaRunsTrafficInt64MigrationForLegacySchema(t *testing.T) {
+	db, err := gorm.Open(gsqlite.Open(":memory:"), &gorm.Config{
+		Logger: logger.Default.LogMode(logger.Silent),
+	})
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	t.Cleanup(func() {
+		sqlDB, _ := db.DB()
+		if sqlDB != nil {
+			_ = sqlDB.Close()
+		}
+	})
+
+	if err := db.Exec(`CREATE TABLE schema_version (version INTEGER NOT NULL DEFAULT 0)`).Error; err != nil {
+		t.Fatalf("create schema_version: %v", err)
+	}
+	if err := db.Exec(`INSERT INTO schema_version(version) VALUES(?)`, 4).Error; err != nil {
+		t.Fatalf("seed schema_version: %v", err)
+	}
+
+	originalIDRepair := ensurePostgresIDDefaultsFn
+	ensurePostgresIDDefaultsFn = func(db *gorm.DB) error {
+		return nil
+	}
+	t.Cleanup(func() {
+		ensurePostgresIDDefaultsFn = originalIDRepair
+	})
+
+	called := 0
+	originalMigrate := migratePostgresTrafficInt64ColumnsFn
+	migratePostgresTrafficInt64ColumnsFn = func(db *gorm.DB) error {
+		called++
+		return nil
+	}
+	t.Cleanup(func() {
+		migratePostgresTrafficInt64ColumnsFn = originalMigrate
+	})
+
+	if err := migrateSchema(db); err != nil {
+		t.Fatalf("migrateSchema: %v", err)
+	}
+
+	if called != 1 {
+		t.Fatalf("expected traffic bigint migration to run once, got %d", called)
+	}
+
+	var schemaVersion int
+	if err := db.Raw(`SELECT version FROM schema_version LIMIT 1`).Row().Scan(&schemaVersion); err != nil {
+		t.Fatalf("query schema_version: %v", err)
+	}
+	if schemaVersion != currentSchemaVersion {
+		t.Fatalf("expected schema version %d, got %d", currentSchemaVersion, schemaVersion)
+	}
+}
+
+func TestMigrateSchemaReturnsTrafficInt64MigrationError(t *testing.T) {
+	db, err := gorm.Open(gsqlite.Open(":memory:"), &gorm.Config{
+		Logger: logger.Default.LogMode(logger.Silent),
+	})
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	t.Cleanup(func() {
+		sqlDB, _ := db.DB()
+		if sqlDB != nil {
+			_ = sqlDB.Close()
+		}
+	})
+
+	if err := db.Exec(`CREATE TABLE schema_version (version INTEGER NOT NULL DEFAULT 0)`).Error; err != nil {
+		t.Fatalf("create schema_version: %v", err)
+	}
+	if err := db.Exec(`INSERT INTO schema_version(version) VALUES(?)`, 4).Error; err != nil {
+		t.Fatalf("seed schema_version: %v", err)
+	}
+
+	originalIDRepair := ensurePostgresIDDefaultsFn
+	ensurePostgresIDDefaultsFn = func(db *gorm.DB) error {
+		return nil
+	}
+	t.Cleanup(func() {
+		ensurePostgresIDDefaultsFn = originalIDRepair
+	})
+
+	wantErr := errors.New("traffic bigint migration failed")
+	originalMigrate := migratePostgresTrafficInt64ColumnsFn
+	migratePostgresTrafficInt64ColumnsFn = func(db *gorm.DB) error {
+		return wantErr
+	}
+	t.Cleanup(func() {
+		migratePostgresTrafficInt64ColumnsFn = originalMigrate
+	})
+
+	err = migrateSchema(db)
+	if !errors.Is(err, wantErr) {
+		t.Fatalf("expected error %v, got %v", wantErr, err)
+	}
+}
+
+func TestAlterPostgresColumnToBigIntIfNeededValidatesNames(t *testing.T) {
+	if err := alterPostgresColumnToBigIntIfNeeded(nil, "peer_share", "max_bandwidth"); err == nil || !strings.Contains(err.Error(), "nil db") {
+		t.Fatalf("expected nil db error, got %v", err)
+	}
+	if err := alterPostgresColumnToBigIntIfNeeded(&gorm.DB{}, "", "max_bandwidth"); err == nil || !strings.Contains(err.Error(), "empty table or column name") {
+		t.Fatalf("expected empty name error, got %v", err)
+	}
+	if err := alterPostgresColumnToBigIntIfNeeded(&gorm.DB{}, "peer_share", ""); err == nil || !strings.Contains(err.Error(), "empty table or column name") {
+		t.Fatalf("expected empty name error, got %v", err)
+	}
+}

go-backend/internal/store/repo/repository_monitor_nodes.go

@@ -0,0 +1,19 @@
+package repo
+
+import (
+	"errors"
+
+	"go-backend/internal/store/model"
+)
+
+func (r *Repository) ListMonitorNodes() ([]model.Node, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var nodes []model.Node
+	err := r.db.Select("id", "inx", "name", "status", "version", "updated_time").
+		Where("is_remote = ?", 0).
+		Order("inx ASC, id ASC").
+		Find(&nodes).Error
+	return nodes, err
+}

go-backend/internal/store/repo/repository_monitor_permission.go

@@ -0,0 +1,54 @@
+package repo
+
+import (
+	"errors"
+
+	"go-backend/internal/store/model"
+
+	"gorm.io/gorm/clause"
+)
+
+func (r *Repository) InsertMonitorPermission(userID int64, now int64) error {
+	if r == nil || r.db == nil {
+		return errors.New("repository not initialized")
+	}
+	if userID <= 0 {
+		return nil
+	}
+	row := model.MonitorPermission{UserID: userID, CreatedTime: now}
+	return r.db.Clauses(clause.OnConflict{DoNothing: true}).Create(&row).Error
+}
+
+func (r *Repository) DeleteMonitorPermission(userID int64) error {
+	if r == nil || r.db == nil {
+		return errors.New("repository not initialized")
+	}
+	if userID <= 0 {
+		return nil
+	}
+	return r.db.Where("user_id = ?", userID).Delete(&model.MonitorPermission{}).Error
+}
+
+func (r *Repository) HasMonitorPermission(userID int64) (bool, error) {
+	if r == nil || r.db == nil {
+		return false, errors.New("repository not initialized")
+	}
+	if userID <= 0 {
+		return false, nil
+	}
+	var count int64
+	err := r.db.Model(&model.MonitorPermission{}).Where("user_id = ?", userID).Count(&count).Error
+	if err != nil {
+		return false, err
+	}
+	return count > 0, nil
+}
+
+func (r *Repository) ListMonitorPermissions() ([]model.MonitorPermission, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var items []model.MonitorPermission
+	err := r.db.Order("id ASC").Find(&items).Error
+	return items, err
+}

go-backend/internal/store/repo/repository_monitor_tunnels.go

@@ -0,0 +1,18 @@
+package repo
+
+import (
+	"errors"
+
+	"go-backend/internal/store/model"
+)
+
+func (r *Repository) ListMonitorTunnels() ([]model.Tunnel, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var tunnels []model.Tunnel
+	err := r.db.Select("id", "inx", "name", "status", "updated_time").
+		Order("inx ASC, id ASC").
+		Find(&tunnels).Error
+	return tunnels, err
+}

go-backend/internal/store/repo/repository_monitoring_test.go

@@ -0,0 +1,134 @@
+package repo
+
+import (
+	"sync"
+	"testing"
+	"time"
+
+	"go-backend/internal/store/model"
+)
+
+func TestGetTunnelMetricsAggregatedSumsAcrossNodes(t *testing.T) {
+	r, err := Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	ts := time.Now().UnixMilli()
+
+	if err := r.InsertTunnelMetric(&model.TunnelMetric{
+		TunnelID:  1,
+		NodeID:    1,
+		Timestamp: ts,
+		BytesIn:   100,
+		BytesOut:  200,
+	}); err != nil {
+		t.Fatalf("insert tunnel metric n1: %v", err)
+	}
+	if err := r.InsertTunnelMetric(&model.TunnelMetric{
+		TunnelID:  1,
+		NodeID:    2,
+		Timestamp: ts,
+		BytesIn:   300,
+		BytesOut:  400,
+	}); err != nil {
+		t.Fatalf("insert tunnel metric n2: %v", err)
+	}
+
+	metrics, err := r.GetTunnelMetricsAggregated(1, ts-1000, ts+1000)
+	if err != nil {
+		t.Fatalf("get aggregated tunnel metrics: %v", err)
+	}
+	if len(metrics) != 1 {
+		t.Fatalf("expected 1 aggregated point, got %d", len(metrics))
+	}
+	if metrics[0].Timestamp != ts {
+		t.Fatalf("expected timestamp %d, got %d", ts, metrics[0].Timestamp)
+	}
+	if metrics[0].BytesIn != 400 {
+		t.Fatalf("expected bytesIn 400, got %d", metrics[0].BytesIn)
+	}
+	if metrics[0].BytesOut != 600 {
+		t.Fatalf("expected bytesOut 600, got %d", metrics[0].BytesOut)
+	}
+}
+
+func TestUpsertTunnelMetricBucketsAggregatesDuplicateKeysInBatch(t *testing.T) {
+	r, err := Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	ts := time.Now().UnixMilli()
+
+	items := []*model.TunnelMetric{
+		{TunnelID: 1, NodeID: 1, Timestamp: ts, BytesIn: 10, BytesOut: 20},
+		{TunnelID: 1, NodeID: 1, Timestamp: ts, BytesIn: 30, BytesOut: 40},
+	}
+	if err := r.UpsertTunnelMetricBuckets(items); err != nil {
+		t.Fatalf("upsert buckets: %v", err)
+	}
+
+	rows, err := r.GetTunnelMetrics(1, ts-1000, ts+1000)
+	if err != nil {
+		t.Fatalf("get tunnel metrics: %v", err)
+	}
+	if len(rows) != 1 {
+		t.Fatalf("expected 1 stored row, got %d", len(rows))
+	}
+	if rows[0].BytesIn != 40 {
+		t.Fatalf("expected bytesIn 40, got %d", rows[0].BytesIn)
+	}
+	if rows[0].BytesOut != 60 {
+		t.Fatalf("expected bytesOut 60, got %d", rows[0].BytesOut)
+	}
+}
+
+func TestUpsertTunnelMetricBucketsIsSafeUnderConcurrency(t *testing.T) {
+	r, err := Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	ts := time.Now().UnixMilli()
+
+	const workers = 20
+	const perWorkerIn = int64(5)
+	const perWorkerOut = int64(7)
+
+	var wg sync.WaitGroup
+	wg.Add(workers)
+	for i := 0; i < workers; i++ {
+		go func() {
+			defer wg.Done()
+			_ = r.UpsertTunnelMetricBuckets([]*model.TunnelMetric{{
+				TunnelID:  1,
+				NodeID:    1,
+				Timestamp: ts,
+				BytesIn:   perWorkerIn,
+				BytesOut:  perWorkerOut,
+			}})
+		}()
+	}
+	wg.Wait()
+
+	rows, err := r.GetTunnelMetrics(1, ts-1000, ts+1000)
+	if err != nil {
+		t.Fatalf("get tunnel metrics: %v", err)
+	}
+	if len(rows) != 1 {
+		t.Fatalf("expected 1 stored row, got %d", len(rows))
+	}
+
+	wantIn := int64(workers) * perWorkerIn
+	wantOut := int64(workers) * perWorkerOut
+	if rows[0].BytesIn != wantIn {
+		t.Fatalf("expected bytesIn %d, got %d", wantIn, rows[0].BytesIn)
+	}
+	if rows[0].BytesOut != wantOut {
+		t.Fatalf("expected bytesOut %d, got %d", wantOut, rows[0].BytesOut)
+	}
+}

go-backend/internal/store/repo/repository_tunnel_quality.go

@@ -0,0 +1,98 @@
+package repo
+
+import (
+	"errors"
+
+	"go-backend/internal/store/model"
+)
+
+// InsertTunnelQuality appends a tunnel quality probe result.
+// (Follows the same pattern as InsertServiceMonitorResult.)
+func (r *Repository) InsertTunnelQuality(q *model.TunnelQuality) error {
+	if r == nil || r.db == nil {
+		return errors.New("repository not initialized")
+	}
+	if q == nil || q.TunnelID <= 0 {
+		return nil
+	}
+	return r.db.Create(q).Error
+}
+
+// GetTunnelQualityHistory returns quality probe results for a tunnel
+// within a time range, ordered by timestamp ascending.
+// (Mirrors GetServiceMonitorResults pattern.)
+func (r *Repository) GetTunnelQualityHistory(tunnelID int64, startMs, endMs int64) ([]model.TunnelQuality, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var results []model.TunnelQuality
+	err := r.db.Where("tunnel_id = ? AND timestamp >= ? AND timestamp <= ?", tunnelID, startMs, endMs).
+		Order("timestamp ASC").
+		Find(&results).Error
+	return results, err
+}
+
+// GetLatestTunnelQualities returns the newest quality result per tunnel_id.
+// (Mirrors GetLatestServiceMonitorResults pattern.)
+func (r *Repository) GetLatestTunnelQualities() ([]model.TunnelQuality, error) {
+	if r == nil || r.db == nil {
+		return nil, nil
+	}
+
+	var results []model.TunnelQuality
+
+	// Use window function (works on modern SQLite 3.25+ and PostgreSQL).
+	q := `
+		SELECT id, tunnel_id, entry_to_exit_latency, exit_to_bing_latency,
+		       entry_to_exit_loss, exit_to_bing_loss, success, error_message, timestamp
+		FROM (
+			SELECT *, ROW_NUMBER() OVER (PARTITION BY tunnel_id ORDER BY timestamp DESC, id DESC) AS rn
+			FROM tunnel_quality
+		) t
+		WHERE rn = 1
+		ORDER BY tunnel_id ASC
+	`
+	if err := r.db.Raw(q).Scan(&results).Error; err == nil {
+		return results, nil
+	}
+
+	// Fallback for older SQLite
+	results = nil
+	err := r.db.Order("timestamp DESC, id DESC").Limit(5000).Find(&results).Error
+	if err != nil {
+		return nil, err
+	}
+
+	seen := make(map[int64]struct{}, len(results))
+	out := make([]model.TunnelQuality, 0, len(results))
+	for _, row := range results {
+		if row.TunnelID <= 0 {
+			continue
+		}
+		if _, ok := seen[row.TunnelID]; ok {
+			continue
+		}
+		seen[row.TunnelID] = struct{}{}
+		out = append(out, row)
+	}
+	return out, nil
+}
+
+// PruneTunnelQualityResults deletes quality results older than the given timestamp.
+// (Mirrors PruneServiceMonitorResults pattern.)
+func (r *Repository) PruneTunnelQualityResults(olderThanMs int64) error {
+	if r == nil || r.db == nil {
+		return nil
+	}
+	return r.db.Where("timestamp < ?", olderThanMs).Delete(&model.TunnelQuality{}).Error
+}
+
+// ListEnabledTunnelIDs returns IDs of all tunnels with status=1.
+func (r *Repository) ListEnabledTunnelIDs() ([]int64, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var ids []int64
+	err := r.db.Model(&model.Tunnel{}).Where("status = ?", 1).Pluck("id", &ids).Error
+	return ids, err
+}

go-backend/internal/store/repo/repository_user_quota.go

@@ -0,0 +1,378 @@
+package repo
+
+import (
+	"errors"
+	"fmt"
+	"strconv"
+	"strings"
+	"time"
+
+	"go-backend/internal/store/model"
+
+	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
+)
+
+const userQuotaBytesPerGB int64 = 1024 * 1024 * 1024
+
+type UserQuotaRelease struct {
+	UserID      int64
+	ForwardIDs  []int64
+	UnblockUser bool
+}
+
+func userQuotaWindowKeys(now time.Time) (int64, int64) {
+	return int64(now.Year()*10000 + int(now.Month())*100 + now.Day()), int64(now.Year()*100 + int(now.Month()))
+}
+
+func cloneUserQuotaView(q model.UserQuota) *model.UserQuotaView {
+	return &model.UserQuotaView{
+		UserID:           q.UserID,
+		DailyLimitGB:     q.DailyLimitGB,
+		MonthlyLimitGB:   q.MonthlyLimitGB,
+		DailyUsedBytes:   q.DailyUsedBytes,
+		MonthlyUsedBytes: q.MonthlyUsedBytes,
+		DayKey:           q.DayKey,
+		MonthKey:         q.MonthKey,
+		DisabledByQuota:  q.DisabledByQuota,
+		DisabledAt:       q.DisabledAt,
+		PausedForwardIDs: q.PausedForwardIDs,
+	}
+}
+
+func normalizeUserQuotaView(view *model.UserQuotaView, now time.Time) *model.UserQuotaView {
+	if view == nil {
+		return nil
+	}
+	dayKey, monthKey := userQuotaWindowKeys(now)
+	out := *view
+	if out.DayKey != dayKey {
+		out.DayKey = dayKey
+		out.DailyUsedBytes = 0
+	}
+	if out.MonthKey != monthKey {
+		out.MonthKey = monthKey
+		out.MonthlyUsedBytes = 0
+	}
+	return &out
+}
+
+func userQuotaExceeded(view *model.UserQuotaView) bool {
+	if view == nil {
+		return false
+	}
+	if view.DailyLimitGB > 0 && view.DailyUsedBytes >= view.DailyLimitGB*userQuotaBytesPerGB {
+		return true
+	}
+	if view.MonthlyLimitGB > 0 && view.MonthlyUsedBytes >= view.MonthlyLimitGB*userQuotaBytesPerGB {
+		return true
+	}
+	return false
+}
+
+func parsePausedForwardIDs(raw string) []int64 {
+	parts := strings.Split(strings.TrimSpace(raw), ",")
+	out := make([]int64, 0, len(parts))
+	seen := make(map[int64]struct{}, len(parts))
+	for _, part := range parts {
+		id, err := strconv.ParseInt(strings.TrimSpace(part), 10, 64)
+		if err != nil || id <= 0 {
+			continue
+		}
+		if _, ok := seen[id]; ok {
+			continue
+		}
+		seen[id] = struct{}{}
+		out = append(out, id)
+	}
+	return out
+}
+
+func joinPausedForwardIDs(ids []int64) string {
+	if len(ids) == 0 {
+		return ""
+	}
+	parts := make([]string, 0, len(ids))
+	seen := make(map[int64]struct{}, len(ids))
+	for _, id := range ids {
+		if id <= 0 {
+			continue
+		}
+		if _, ok := seen[id]; ok {
+			continue
+		}
+		seen[id] = struct{}{}
+		parts = append(parts, strconv.FormatInt(id, 10))
+	}
+	return strings.Join(parts, ",")
+}
+
+func (r *Repository) loadOrCreateUserQuotaTx(tx *gorm.DB, userID int64, now time.Time) (*model.UserQuota, error) {
+	if tx == nil {
+		return nil, errors.New("database unavailable")
+	}
+	dayKey, monthKey := userQuotaWindowKeys(now)
+	q := &model.UserQuota{}
+	err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).Where("user_id = ?", userID).First(q).Error
+	if err == nil {
+		return q, nil
+	}
+	if !errors.Is(err, gorm.ErrRecordNotFound) {
+		return nil, err
+	}
+	nowMs := now.UnixMilli()
+	q = &model.UserQuota{
+		UserID:           userID,
+		DayKey:           dayKey,
+		MonthKey:         monthKey,
+		CreatedTime:      nowMs,
+		UpdatedTime:      nowMs,
+		PausedForwardIDs: "",
+	}
+	if err := tx.Create(q).Error; err != nil {
+		return nil, err
+	}
+	return q, nil
+}
+
+func applyUserQuotaWindowRoll(q *model.UserQuota, now time.Time) bool {
+	if q == nil {
+		return false
+	}
+	changed := false
+	dayKey, monthKey := userQuotaWindowKeys(now)
+	if q.DayKey != dayKey {
+		q.DayKey = dayKey
+		q.DailyUsedBytes = 0
+		changed = true
+	}
+	if q.MonthKey != monthKey {
+		q.MonthKey = monthKey
+		q.MonthlyUsedBytes = 0
+		changed = true
+	}
+	return changed
+}
+
+func (r *Repository) SaveUserQuotaConfigTx(tx *gorm.DB, userID, dailyLimitGB, monthlyLimitGB int64, now int64) error {
+	if tx == nil {
+		return errors.New("database unavailable")
+	}
+	if userID <= 0 {
+		return errors.New("user id is required")
+	}
+	if dailyLimitGB < 0 || monthlyLimitGB < 0 {
+		return errors.New("quota limit cannot be negative")
+	}
+	current := time.UnixMilli(now)
+	q, err := r.loadOrCreateUserQuotaTx(tx, userID, current)
+	if err != nil {
+		return err
+	}
+	updates := map[string]interface{}{
+		"daily_limit_gb":   dailyLimitGB,
+		"monthly_limit_gb": monthlyLimitGB,
+		"updated_time":     now,
+	}
+	if q.DayKey == 0 || q.MonthKey == 0 {
+		dayKey, monthKey := userQuotaWindowKeys(current)
+		updates["day_key"] = dayKey
+		updates["month_key"] = monthKey
+	}
+	return tx.Model(&model.UserQuota{}).Where("user_id = ?", userID).Updates(updates).Error
+}
+
+func (r *Repository) ListUserQuotaViewsByUserIDs(userIDs []int64, now time.Time) (map[int64]*model.UserQuotaView, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	out := make(map[int64]*model.UserQuotaView)
+	if len(userIDs) == 0 {
+		return out, nil
+	}
+	var rows []model.UserQuota
+	if err := r.db.Where("user_id IN ?", userIDs).Find(&rows).Error; err != nil {
+		return nil, err
+	}
+	for _, row := range rows {
+		out[row.UserID] = normalizeUserQuotaView(cloneUserQuotaView(row), now)
+	}
+	return out, nil
+}
+
+func (r *Repository) GetUserQuotaView(userID int64, now time.Time) (*model.UserQuotaView, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	if userID <= 0 {
+		return nil, nil
+	}
+	var row model.UserQuota
+	err := r.db.Where("user_id = ?", userID).First(&row).Error
+	if errors.Is(err, gorm.ErrRecordNotFound) {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, err
+	}
+	return normalizeUserQuotaView(cloneUserQuotaView(row), now), nil
+}
+
+func (r *Repository) AddUserQuotaUsage(userID int64, usedBytes int64, now time.Time) (*model.UserQuotaView, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	if userID <= 0 {
+		return nil, nil
+	}
+	result := &model.UserQuotaView{}
+	err := r.db.Transaction(func(tx *gorm.DB) error {
+		q, err := r.loadOrCreateUserQuotaTx(tx, userID, now)
+		if err != nil {
+			return err
+		}
+		applyUserQuotaWindowRoll(q, now)
+		if usedBytes > 0 {
+			q.DailyUsedBytes += usedBytes
+			q.MonthlyUsedBytes += usedBytes
+		}
+		q.UpdatedTime = now.UnixMilli()
+		if err := tx.Model(&model.UserQuota{}).Where("user_id = ?", userID).Updates(map[string]interface{}{
+			"daily_used_bytes":   q.DailyUsedBytes,
+			"monthly_used_bytes": q.MonthlyUsedBytes,
+			"day_key":            q.DayKey,
+			"month_key":          q.MonthKey,
+			"updated_time":       q.UpdatedTime,
+		}).Error; err != nil {
+			return err
+		}
+		*result = *cloneUserQuotaView(*q)
+		return nil
+	})
+	if err != nil {
+		return nil, err
+	}
+	return normalizeUserQuotaView(result, now), nil
+}
+
+func (r *Repository) MarkUserQuotaDisabled(userID int64, pausedForwardIDs []int64, now int64) error {
+	if r == nil || r.db == nil {
+		return errors.New("repository not initialized")
+	}
+	if userID <= 0 {
+		return errors.New("user id is required")
+	}
+	return r.db.Model(&model.UserQuota{}).Where("user_id = ?", userID).Updates(map[string]interface{}{
+		"disabled_by_quota":  1,
+		"disabled_at":        now,
+		"paused_forward_ids": joinPausedForwardIDs(pausedForwardIDs),
+		"updated_time":       now,
+	}).Error
+}
+
+func (r *Repository) ResetUserQuotaUsage(userID int64, scope string, now time.Time) (*UserQuotaRelease, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	if userID <= 0 {
+		return nil, errors.New("user id is required")
+	}
+	scope = strings.TrimSpace(strings.ToLower(scope))
+	if scope == "" {
+		scope = "all"
+	}
+	if scope != "daily" && scope != "monthly" && scope != "all" {
+		return nil, fmt.Errorf("unsupported quota reset scope: %s", scope)
+	}
+	var release *UserQuotaRelease
+	err := r.db.Transaction(func(tx *gorm.DB) error {
+		q, err := r.loadOrCreateUserQuotaTx(tx, userID, now)
+		if err != nil {
+			return err
+		}
+		applyUserQuotaWindowRoll(q, now)
+		switch scope {
+		case "daily":
+			q.DailyUsedBytes = 0
+		case "monthly":
+			q.MonthlyUsedBytes = 0
+		case "all":
+			q.DailyUsedBytes = 0
+			q.MonthlyUsedBytes = 0
+		}
+		q.UpdatedTime = now.UnixMilli()
+		release = &UserQuotaRelease{UserID: userID}
+		if q.DisabledByQuota == 1 && !userQuotaExceeded(cloneUserQuotaView(*q)) {
+			release.UnblockUser = true
+			release.ForwardIDs = parsePausedForwardIDs(q.PausedForwardIDs)
+			q.DisabledByQuota = 0
+			q.DisabledAt = 0
+			q.PausedForwardIDs = ""
+		}
+		return tx.Model(&model.UserQuota{}).Where("user_id = ?", userID).Updates(map[string]interface{}{
+			"daily_used_bytes":   q.DailyUsedBytes,
+			"monthly_used_bytes": q.MonthlyUsedBytes,
+			"day_key":            q.DayKey,
+			"month_key":          q.MonthKey,
+			"disabled_by_quota":  q.DisabledByQuota,
+			"disabled_at":        q.DisabledAt,
+			"paused_forward_ids": q.PausedForwardIDs,
+			"updated_time":       q.UpdatedTime,
+		}).Error
+	})
+	if err != nil {
+		return nil, err
+	}
+	return release, nil
+}
+
+func (r *Repository) RollUserQuotaWindows(now time.Time) ([]UserQuotaRelease, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var releases []UserQuotaRelease
+	err := r.db.Transaction(func(tx *gorm.DB) error {
+		var rows []model.UserQuota
+		if err := tx.Find(&rows).Error; err != nil {
+			return err
+		}
+		nowMs := now.UnixMilli()
+		for _, row := range rows {
+			q := row
+			changed := applyUserQuotaWindowRoll(&q, now)
+			release := UserQuotaRelease{UserID: q.UserID}
+			if q.DisabledByQuota == 1 && !userQuotaExceeded(cloneUserQuotaView(q)) {
+				release.UnblockUser = true
+				release.ForwardIDs = parsePausedForwardIDs(q.PausedForwardIDs)
+				q.DisabledByQuota = 0
+				q.DisabledAt = 0
+				q.PausedForwardIDs = ""
+				changed = true
+			}
+			if !changed {
+				continue
+			}
+			q.UpdatedTime = nowMs
+			if err := tx.Model(&model.UserQuota{}).Where("user_id = ?", q.UserID).Updates(map[string]interface{}{
+				"daily_used_bytes":   q.DailyUsedBytes,
+				"monthly_used_bytes": q.MonthlyUsedBytes,
+				"day_key":            q.DayKey,
+				"month_key":          q.MonthKey,
+				"disabled_by_quota":  q.DisabledByQuota,
+				"disabled_at":        q.DisabledAt,
+				"paused_forward_ids": q.PausedForwardIDs,
+				"updated_time":       q.UpdatedTime,
+			}).Error; err != nil {
+				return err
+			}
+			if release.UnblockUser {
+				releases = append(releases, release)
+			}
+		}
+		return nil
+	})
+	if err != nil {
+		return nil, err
+	}
+	return releases, nil
+}

go-backend/internal/ws/server.go

@@ -0,0 +1,628 @@
+package ws
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"log"
+	"net/http"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/gorilla/websocket"
+
+	"go-backend/internal/auth"
+	"go-backend/internal/security"
+	"go-backend/internal/store/repo"
+)
+
+type encryptedMessage struct {
+	Encrypted bool   `json:"encrypted"`
+	Data      string `json:"data"`
+	Timestamp int64  `json:"timestamp"`
+}
+
+type broadcastMessage struct {
+	ID   int64  `json:"id"`
+	Type string `json:"type"`
+	Data string `json:"data"`
+}
+
+type connWrap struct {
+	conn *websocket.Conn
+	mu   sync.Mutex
+}
+
+type nodeSession struct {
+	nodeID int64
+	secret string
+	conn   *connWrap
+	crypto *security.AESCrypto // 缓存的 AES 加密器，避免每条消息重建
+}
+
+type commandResponse struct {
+	Type      string          `json:"type"`
+	Success   bool            `json:"success"`
+	Message   string          `json:"message"`
+	Data      json.RawMessage `json:"data,omitempty"`
+	RequestID string          `json:"requestId,omitempty"`
+}
+
+type pendingRequest struct {
+	nodeID int64
+	ch     chan CommandResult
+}
+
+const (
+	wsPingPeriod = 15 * time.Second
+	wsPongWait   = 45 * time.Second
+	wsWriteWait  = 5 * time.Second
+)
+
+type CommandResult struct {
+	Type    string                 `json:"type"`
+	Success bool                   `json:"success"`
+	Message string                 `json:"message"`
+	Data    map[string]interface{} `json:"data,omitempty"`
+}
+
+type Server struct {
+	repo         *repo.Repository
+	jwtSecret    string
+	upgrader     websocket.Upgrader
+	onNodeOnline func(nodeID int64)
+	onNodeMetric func(nodeID int64, info SystemInfo)
+
+	mu      sync.RWMutex
+	admins  map[*connWrap]struct{}
+	nodes   map[int64]*nodeSession
+	byConn  map[*websocket.Conn]*nodeSession
+	pending map[string]pendingRequest
+}
+
+type SystemInfo struct {
+	Uptime           uint64  `json:"uptime"`
+	BytesReceived    uint64  `json:"bytes_received"`
+	BytesTransmitted uint64  `json:"bytes_transmitted"`
+	CPUUsage         float64 `json:"cpu_usage"`
+	MemoryUsage      float64 `json:"memory_usage"`
+	DiskUsage        float64 `json:"disk_usage"`
+	Load1            float64 `json:"load1"`
+	Load5            float64 `json:"load5"`
+	Load15           float64 `json:"load15"`
+	TCPConns         int64   `json:"tcp_conns"`
+	UDPConns         int64   `json:"udp_conns"`
+	NetInSpeed       int64   `json:"net_in_speed"`
+	NetOutSpeed      int64   `json:"net_out_speed"`
+}
+
+func (s *Server) SetNodeOnlineHook(fn func(nodeID int64)) {
+	if s == nil {
+		return
+	}
+	s.mu.Lock()
+	s.onNodeOnline = fn
+	s.mu.Unlock()
+}
+
+func (s *Server) SetNodeMetricHook(fn func(nodeID int64, info SystemInfo)) {
+	if s == nil {
+		return
+	}
+	s.mu.Lock()
+	s.onNodeMetric = fn
+	s.mu.Unlock()
+}
+
+func NewServer(repo *repo.Repository, jwtSecret string) *Server {
+	return &Server{
+		repo:      repo,
+		jwtSecret: jwtSecret,
+		upgrader: websocket.Upgrader{
+			CheckOrigin: func(r *http.Request) bool { return true },
+		},
+		admins:  make(map[*connWrap]struct{}),
+		nodes:   make(map[int64]*nodeSession),
+		byConn:  make(map[*websocket.Conn]*nodeSession),
+		pending: make(map[string]pendingRequest),
+	}
+}
+
+func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	query := r.URL.Query()
+	typeVal := query.Get("type")
+	secret := query.Get("secret")
+
+	if typeVal == "1" {
+		node, err := s.repo.GetNodeBySecret(secret)
+		if err != nil || node == nil {
+			http.Error(w, "forbidden", http.StatusForbidden)
+			return
+		}
+		s.handleNode(w, r, node.ID, secret)
+		return
+	}
+
+	if typeVal == "0" {
+		if _, ok := auth.ValidateToken(secret, s.jwtSecret); !ok {
+			http.Error(w, "forbidden", http.StatusForbidden)
+			return
+		}
+		s.handleAdmin(w, r)
+		return
+	}
+
+	http.Error(w, "bad request", http.StatusBadRequest)
+}
+
+func (s *Server) handleAdmin(w http.ResponseWriter, r *http.Request) {
+	conn, err := s.upgrader.Upgrade(w, r, nil)
+	if err != nil {
+		return
+	}
+	cw := &connWrap{conn: conn}
+	_ = conn.SetReadDeadline(time.Now().Add(wsPongWait))
+	conn.SetPongHandler(func(string) error {
+		return conn.SetReadDeadline(time.Now().Add(wsPongWait))
+	})
+	done := make(chan struct{})
+	go startKeepalive(cw, done)
+
+	s.mu.Lock()
+	s.admins[cw] = struct{}{}
+	s.mu.Unlock()
+
+	defer func() {
+		close(done)
+		s.mu.Lock()
+		delete(s.admins, cw)
+		s.mu.Unlock()
+		_ = conn.Close()
+	}()
+
+	for {
+		if _, _, err := conn.ReadMessage(); err != nil {
+			return
+		}
+	}
+}
+
+func (s *Server) handleNode(w http.ResponseWriter, r *http.Request, nodeID int64, secret string) {
+	conn, err := s.upgrader.Upgrade(w, r, nil)
+	if err != nil {
+		return
+	}
+	cw := &connWrap{conn: conn}
+	_ = conn.SetReadDeadline(time.Now().Add(wsPongWait))
+	conn.SetPongHandler(func(string) error {
+		return conn.SetReadDeadline(time.Now().Add(wsPongWait))
+	})
+	done := make(chan struct{})
+	go startKeepalive(cw, done)
+
+	version := r.URL.Query().Get("version")
+	httpVal := parseIntDefault(r.URL.Query().Get("http"), 0)
+	tlsVal := parseIntDefault(r.URL.Query().Get("tls"), 0)
+	socksVal := parseIntDefault(r.URL.Query().Get("socks"), 0)
+
+	s.mu.Lock()
+	if old, ok := s.nodes[nodeID]; ok {
+		_ = old.conn.conn.Close()
+		delete(s.byConn, old.conn.conn)
+	}
+	// 初始化 AES 加密器并缓存（仅创建一次）
+	var nodeCrypto *security.AESCrypto
+	if strings.TrimSpace(secret) != "" {
+		nodeCrypto, _ = security.NewAESCrypto(secret)
+	}
+	ns := &nodeSession{nodeID: nodeID, secret: secret, conn: cw, crypto: nodeCrypto}
+	s.nodes[nodeID] = ns
+	s.byConn[conn] = ns
+	s.mu.Unlock()
+
+	_ = s.repo.UpdateNodeOnline(nodeID, 1, version, httpVal, tlsVal, socksVal)
+	s.broadcastStatus(nodeID, 1)
+
+	s.mu.RLock()
+	onlineHook := s.onNodeOnline
+	s.mu.RUnlock()
+	if onlineHook != nil {
+		go onlineHook(nodeID)
+	}
+
+	defer func() {
+		close(done)
+		needOfflineBroadcast := false
+		s.mu.Lock()
+		current, ok := s.nodes[nodeID]
+		if ok && current.conn.conn == conn {
+			delete(s.nodes, nodeID)
+			needOfflineBroadcast = true
+		}
+		delete(s.byConn, conn)
+		s.mu.Unlock()
+		if needOfflineBroadcast {
+			s.failPendingForNode(nodeID, "节点连接已断开")
+			_ = s.repo.UpdateNodeStatus(nodeID, 0)
+			s.broadcastStatus(nodeID, 0)
+		}
+		_ = conn.Close()
+	}()
+
+	for {
+		_, payload, err := conn.ReadMessage()
+		if err != nil {
+			return
+		}
+
+		msg := decryptIfNeeded(payload, ns.crypto, secret)
+		s.tryResolvePending(nodeID, msg)
+
+		var parsed struct {
+			Type string `json:"type"`
+		}
+		if json.Unmarshal([]byte(msg), &parsed) == nil && parsed.Type != "" {
+			switch parsed.Type {
+			case "metric":
+				// Agent 新版指标消息：{type:"metric", data:{...}}
+				var envelope struct {
+					Data json.RawMessage `json:"data"`
+				}
+				if err := json.Unmarshal([]byte(msg), &envelope); err == nil && len(envelope.Data) > 0 {
+					// 解析 SystemInfo 并调用 hook
+					var sysInfo SystemInfo
+					if json.Unmarshal(envelope.Data, &sysInfo) == nil {
+						s.mu.RLock()
+						onMetric := s.onNodeMetric
+						s.mu.RUnlock()
+						if onMetric != nil {
+							go onMetric(nodeID, sysInfo)
+						}
+					}
+					// 广播内层 data 给前端（保持平坦结构兼容性）
+					s.broadcastTyped(nodeID, "metric", string(envelope.Data))
+				}
+				continue
+			case "UpgradeProgress":
+				s.broadcastTyped(nodeID, "upgrade_progress", msg)
+				continue
+			default:
+				// Unknown typed messages still get broadcast so future
+				// agent message types are not silently lost.
+				s.broadcastInfo(nodeID, msg)
+				continue
+			}
+		}
+
+		// 兼容旧版 Agent：无 type 字段的系统信息消息
+		if looksLikeSystemInfoMessage(msg) {
+			var sysInfo SystemInfo
+			if err := json.Unmarshal([]byte(msg), &sysInfo); err == nil {
+				s.mu.RLock()
+				onMetric := s.onNodeMetric
+				s.mu.RUnlock()
+				if onMetric != nil {
+					go onMetric(nodeID, sysInfo)
+				}
+				s.broadcastTyped(nodeID, "metric", msg)
+				continue
+			}
+		}
+
+		s.broadcastInfo(nodeID, msg)
+	}
+}
+
+func looksLikeSystemInfoMessage(msg string) bool {
+	// Keep this as a cheap heuristic so that arbitrary JSON objects don't get
+	// misclassified as metrics (SystemInfo unmarshal would otherwise succeed with
+	// all-zero values).
+	if strings.TrimSpace(msg) == "" {
+		return false
+	}
+	if !strings.Contains(msg, "{") {
+		return false
+	}
+
+	keys := []string{
+		"\"uptime\"",
+		"\"cpu_usage\"",
+		"\"memory_usage\"",
+		"\"disk_usage\"",
+		"\"bytes_received\"",
+		"\"bytes_transmitted\"",
+		"\"net_in_speed\"",
+		"\"net_out_speed\"",
+		"\"tcp_conns\"",
+		"\"udp_conns\"",
+		"\"load1\"",
+		"\"load5\"",
+		"\"load15\"",
+	}
+	matched := 0
+	for _, k := range keys {
+		if strings.Contains(msg, k) {
+			matched++
+			if matched >= 3 {
+				return true
+			}
+		}
+	}
+	return false
+}
+
+func (s *Server) SendCommand(nodeID int64, cmdType string, data interface{}, timeout time.Duration) (CommandResult, error) {
+	if s == nil {
+		return CommandResult{}, errors.New("server not initialized")
+	}
+	if strings.TrimSpace(cmdType) == "" {
+		return CommandResult{}, errors.New("command type is empty")
+	}
+	if timeout <= 0 {
+		timeout = 10 * time.Second
+	}
+
+	s.mu.RLock()
+	ns, ok := s.nodes[nodeID]
+	s.mu.RUnlock()
+	if !ok || ns == nil || ns.conn == nil || ns.conn.conn == nil {
+		return CommandResult{}, errors.New("节点不在线")
+	}
+
+	requestID := fmt.Sprintf("%d_%d", nodeID, time.Now().UnixNano())
+	ch := make(chan CommandResult, 1)
+
+	s.mu.Lock()
+	s.pending[requestID] = pendingRequest{nodeID: nodeID, ch: ch}
+	s.mu.Unlock()
+
+	cleanup := func() {
+		s.mu.Lock()
+		if p, exists := s.pending[requestID]; exists {
+			delete(s.pending, requestID)
+			close(p.ch)
+		}
+		s.mu.Unlock()
+	}
+
+	cmdPayload := map[string]interface{}{
+		"type":      cmdType,
+		"data":      data,
+		"requestId": requestID,
+	}
+	rawCmd, err := json.Marshal(cmdPayload)
+	if err != nil {
+		cleanup()
+		return CommandResult{}, err
+	}
+
+	messageData := rawCmd
+	if ns.crypto != nil {
+		encrypted, err := ns.crypto.Encrypt(rawCmd)
+		if err != nil {
+			cleanup()
+			return CommandResult{}, err
+		}
+		wrapper := map[string]interface{}{
+			"encrypted": true,
+			"data":      encrypted,
+			"timestamp": time.Now().UnixMilli(),
+		}
+		messageData, err = json.Marshal(wrapper)
+		if err != nil {
+			cleanup()
+			return CommandResult{}, err
+		}
+	}
+
+	ns.conn.mu.Lock()
+	_ = ns.conn.conn.SetWriteDeadline(time.Now().Add(wsWriteWait))
+	err = ns.conn.conn.WriteMessage(websocket.TextMessage, messageData)
+	_ = ns.conn.conn.SetWriteDeadline(time.Time{})
+	ns.conn.mu.Unlock()
+	if err != nil {
+		cleanup()
+		return CommandResult{}, err
+	}
+
+	select {
+	case result, ok := <-ch:
+		if !ok {
+			return CommandResult{}, errors.New("命令通道已关闭")
+		}
+		if !result.Success {
+			if strings.TrimSpace(result.Message) == "" {
+				result.Message = "命令执行失败"
+			}
+			return result, errors.New(result.Message)
+		}
+		return result, nil
+	case <-time.After(timeout):
+		cleanup()
+		return CommandResult{}, errors.New("等待节点响应超时")
+	}
+}
+
+func (s *Server) tryResolvePending(nodeID int64, message string) {
+	if s == nil || strings.TrimSpace(message) == "" {
+		return
+	}
+
+	// 快速短路：指标消息永远不含 requestId，跳过完整 JSON 解析
+	if !strings.Contains(message, "\"requestId\"") {
+		return
+	}
+
+	var resp commandResponse
+	if err := json.Unmarshal([]byte(message), &resp); err != nil {
+		return
+	}
+	if strings.TrimSpace(resp.RequestID) == "" {
+		return
+	}
+
+	s.mu.Lock()
+	p, ok := s.pending[resp.RequestID]
+	if ok {
+		delete(s.pending, resp.RequestID)
+	}
+	s.mu.Unlock()
+	if !ok {
+		return
+	}
+	if p.nodeID != nodeID {
+		select {
+		case p.ch <- CommandResult{Type: resp.Type, Success: false, Message: "节点响应与请求不匹配"}:
+		default:
+		}
+		close(p.ch)
+		return
+	}
+
+	result := CommandResult{
+		Type:    resp.Type,
+		Success: resp.Success,
+		Message: resp.Message,
+	}
+	if len(resp.Data) > 0 {
+		var data map[string]interface{}
+		if err := json.Unmarshal(resp.Data, &data); err == nil {
+			result.Data = data
+		}
+	}
+
+	select {
+	case p.ch <- result:
+	default:
+	}
+	close(p.ch)
+}
+
+func (s *Server) failPendingForNode(nodeID int64, message string) {
+	if s == nil {
+		return
+	}
+
+	type pair struct {
+		id string
+		pr pendingRequest
+	}
+	items := make([]pair, 0)
+
+	s.mu.Lock()
+	for id, pr := range s.pending {
+		if pr.nodeID != nodeID {
+			continue
+		}
+		items = append(items, pair{id: id, pr: pr})
+		delete(s.pending, id)
+	}
+	s.mu.Unlock()
+
+	for _, item := range items {
+		select {
+		case item.pr.ch <- CommandResult{Success: false, Message: message}:
+		default:
+		}
+		close(item.pr.ch)
+	}
+}
+
+func (s *Server) broadcastStatus(nodeID int64, status int) {
+	payload := map[string]interface{}{
+		"id":   strconv.FormatInt(nodeID, 10),
+		"type": "status",
+		"data": status,
+	}
+	raw, _ := json.Marshal(payload)
+	s.broadcastToAdmins(string(raw))
+}
+
+func (s *Server) broadcastInfo(nodeID int64, data string) {
+	payload := broadcastMessage{ID: nodeID, Type: "info", Data: data}
+	raw, _ := json.Marshal(payload)
+	s.broadcastToAdmins(string(raw))
+}
+
+func (s *Server) broadcastTyped(nodeID int64, msgType string, data string) {
+	payload := broadcastMessage{ID: nodeID, Type: msgType, Data: data}
+	raw, _ := json.Marshal(payload)
+	s.broadcastToAdmins(string(raw))
+}
+
+func (s *Server) broadcastToAdmins(message string) {
+	s.mu.RLock()
+	admins := make([]*connWrap, 0, len(s.admins))
+	for c := range s.admins {
+		admins = append(admins, c)
+	}
+	s.mu.RUnlock()
+
+	for _, c := range admins {
+		c.mu.Lock()
+		_ = c.conn.SetWriteDeadline(time.Now().Add(wsWriteWait))
+		err := c.conn.WriteMessage(websocket.TextMessage, []byte(message))
+		_ = c.conn.SetWriteDeadline(time.Time{})
+		c.mu.Unlock()
+		if err != nil {
+			log.Printf("websocket broadcast failed: %v", err)
+		}
+	}
+}
+
+func decryptIfNeeded(payload []byte, crypto *security.AESCrypto, secret string) string {
+	text := string(payload)
+	var wrap encryptedMessage
+	if err := json.Unmarshal(payload, &wrap); err != nil || !wrap.Encrypted || strings.TrimSpace(wrap.Data) == "" {
+		return text
+	}
+
+	// 优先使用缓存的 crypto 实例
+	c := crypto
+	if c == nil && strings.TrimSpace(secret) != "" {
+		c, _ = security.NewAESCrypto(secret)
+	}
+	if c == nil {
+		return text
+	}
+	plain, err := c.Decrypt(wrap.Data)
+	if err != nil {
+		return text
+	}
+	return string(plain)
+}
+
+func parseIntDefault(v string, fallback int) int {
+	x, err := strconv.Atoi(v)
+	if err != nil {
+		return fallback
+	}
+	return x
+}
+
+func startKeepalive(cw *connWrap, done <-chan struct{}) {
+	if cw == nil || cw.conn == nil {
+		return
+	}
+	ticker := time.NewTicker(wsPingPeriod)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-done:
+			return
+		case <-ticker.C:
+			cw.mu.Lock()
+			_ = cw.conn.SetWriteDeadline(time.Now().Add(wsWriteWait))
+			err := cw.conn.WriteMessage(websocket.PingMessage, nil)
+			_ = cw.conn.SetWriteDeadline(time.Time{})
+			cw.mu.Unlock()
+			if err != nil {
+				_ = cw.conn.Close()
+				return
+			}
+		}
+	}
+}

go-backend/tests/contract/auth_contract_test.go

@@ -0,0 +1,90 @@
+package contract_test
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"go-backend/internal/auth"
+	"go-backend/internal/http/middleware"
+	"go-backend/internal/http/response"
+)
+
+func TestJWTMiddlewareContracts(t *testing.T) {
+	secret := "unit-test-secret"
+
+	next := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		response.WriteJSON(w, response.OK("pass"))
+	})
+
+	wrapped := middleware.JWT(middleware.AuthOptions{JWTSecret: secret})(next)
+
+	t.Run("login path is excluded", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/user/login", nil)
+		res := httptest.NewRecorder()
+		wrapped.ServeHTTP(res, req)
+		assertCode(t, res, 0)
+	})
+
+	t.Run("missing token returns 401 contract message", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/tunnel/list", nil)
+		res := httptest.NewRecorder()
+		wrapped.ServeHTTP(res, req)
+		assertCodeMsg(t, res, 401, "未登录或token已过期")
+	})
+
+	t.Run("invalid token returns 401 contract message", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/tunnel/list", nil)
+		req.Header.Set("Authorization", "invalid.token.value")
+		res := httptest.NewRecorder()
+		wrapped.ServeHTTP(res, req)
+		assertCodeMsg(t, res, 401, "无效的token或token已过期")
+	})
+
+	t.Run("valid token reaches next", func(t *testing.T) {
+		token, err := auth.GenerateToken(1, "admin_user", 0, secret)
+		if err != nil {
+			t.Fatalf("generate token: %v", err)
+		}
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/tunnel/list", nil)
+		req.Header.Set("Authorization", token)
+		res := httptest.NewRecorder()
+		wrapped.ServeHTTP(res, req)
+		assertCode(t, res, 0)
+	})
+
+	t.Run("non-admin blocked on admin path", func(t *testing.T) {
+		token, err := auth.GenerateToken(2, "normal_user", 1, secret)
+		if err != nil {
+			t.Fatalf("generate token: %v", err)
+		}
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/config/update", nil)
+		req.Header.Set("Authorization", token)
+		res := httptest.NewRecorder()
+		wrapped.ServeHTTP(res, req)
+		assertCodeMsg(t, res, 403, "权限不足，仅管理员可操作")
+	})
+}
+
+func assertCode(t *testing.T, rec *httptest.ResponseRecorder, expected int) {
+	t.Helper()
+	var out response.R
+	if err := json.NewDecoder(rec.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code != expected {
+		t.Fatalf("expected code %d, got %d", expected, out.Code)
+	}
+}
+
+func assertCodeMsg(t *testing.T, rec *httptest.ResponseRecorder, expectedCode int, expectedMsg string) {
+	t.Helper()
+	var out response.R
+	if err := json.NewDecoder(rec.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code != expectedCode || out.Msg != expectedMsg {
+		t.Fatalf("expected (%d,%q), got (%d,%q)", expectedCode, expectedMsg, out.Code, out.Msg)
+	}
+}

go-backend/tests/contract/batch_action_failure_details_contract_test.go

@@ -0,0 +1,202 @@
+package contract_test
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+	"time"
+
+	"go-backend/internal/auth"
+	"go-backend/internal/http/response"
+	"go-backend/internal/store/repo"
+)
+
+func TestForwardBatchDeleteReturnsFailureReasonsContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, _ := setupContractRouter(t, secret)
+	adminToken := mustAdminToken(t, secret)
+
+	out := postBatchRequest(t, router, adminToken, "/api/v1/forward/batch-delete", `{"ids":[999]}`)
+	result := mustBatchResult(t, out)
+	assertBatchFailureReasonContains(t, result, "转发不存在")
+}
+
+func TestForwardBatchPauseReturnsFailureReasonsContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, _ := setupContractRouter(t, secret)
+	adminToken := mustAdminToken(t, secret)
+
+	out := postBatchRequest(t, router, adminToken, "/api/v1/forward/batch-pause", `{"ids":[999]}`)
+	result := mustBatchResult(t, out)
+	assertBatchFailureReasonContains(t, result, "转发不存在")
+}
+
+func TestForwardBatchResumeReturnsFailureReasonsContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	adminToken := mustAdminToken(t, secret)
+	now := time.Now().UnixMilli()
+
+	forwardID := seedForwardForBatchAction(t, repo, batchForwardSeedOptions{
+		Now:              now,
+		TunnelName:       "resume-detail-tunnel",
+		ForwardName:      "resume-detail-forward",
+		CreateUserTunnel: true,
+		UserTunnelStatus: 0,
+	})
+
+	out := postBatchRequest(t, router, adminToken, "/api/v1/forward/batch-resume", `{"ids":[`+jsonNumber(forwardID)+`]}`)
+	result := mustBatchResult(t, out)
+	assertBatchFailureNameAndReason(t, result, "resume-detail-forward", "该隧道已禁用")
+}
+
+func TestForwardBatchChangeTunnelReturnsFailureReasonsContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	adminToken := mustAdminToken(t, secret)
+	now := time.Now().UnixMilli()
+
+	forwardID := seedForwardForBatchAction(t, repo, batchForwardSeedOptions{
+		Now:         now,
+		TunnelName:  "change-detail-tunnel",
+		ForwardName: "change-detail-forward",
+	})
+	tunnelID := mustQueryInt64(t, repo, `SELECT tunnel_id FROM forward WHERE id = ?`, forwardID)
+
+	payload := `{"forwardIds":[` + jsonNumber(forwardID) + `],"targetTunnelId":` + jsonNumber(tunnelID) + `}`
+	out := postBatchRequest(t, router, adminToken, "/api/v1/forward/batch-change-tunnel", payload)
+	result := mustBatchResult(t, out)
+	assertBatchFailureNameAndReason(t, result, "change-detail-forward", "规则已在目标隧道中")
+}
+
+func TestTunnelBatchDeleteReturnsFailureReasonsContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, _ := setupContractRouter(t, secret)
+	adminToken := mustAdminToken(t, secret)
+
+	out := postBatchRequest(t, router, adminToken, "/api/v1/tunnel/batch-delete", `{"ids":[999]}`)
+	result := mustBatchResult(t, out)
+	assertBatchFailureReasonContains(t, result, "隧道不存在")
+}
+
+type batchForwardSeedOptions struct {
+	Now              int64
+	TunnelName       string
+	ForwardName      string
+	CreateUserTunnel bool
+	UserTunnelStatus int
+}
+
+func mustAdminToken(t *testing.T, secret string) string {
+	t.Helper()
+	token, err := auth.GenerateToken(1, "admin_user", 0, secret)
+	if err != nil {
+		t.Fatalf("generate admin token: %v", err)
+	}
+	return token
+}
+
+func postBatchRequest(t *testing.T, router http.Handler, token, path, payload string) response.R {
+	t.Helper()
+	req := httptest.NewRequest(http.MethodPost, path, bytes.NewBufferString(payload))
+	req.Header.Set("Authorization", token)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+	router.ServeHTTP(res, req)
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code != 0 {
+		t.Fatalf("expected API success envelope, got code=%d msg=%q", out.Code, out.Msg)
+	}
+	return out
+}
+
+func mustBatchResult(t *testing.T, out response.R) map[string]interface{} {
+	t.Helper()
+	result, ok := out.Data.(map[string]interface{})
+	if !ok {
+		t.Fatalf("expected map result, got %T", out.Data)
+	}
+	if int(result["failCount"].(float64)) != 1 {
+		t.Fatalf("expected failCount=1, got %v", result["failCount"])
+	}
+	return result
+}
+
+func assertBatchFailureReasonContains(t *testing.T, result map[string]interface{}, snippet string) {
+	t.Helper()
+	failures, ok := result["failures"].([]interface{})
+	if !ok || len(failures) != 1 {
+		t.Fatalf("expected exactly one failure detail, got %#v", result["failures"])
+	}
+	first, ok := failures[0].(map[string]interface{})
+	if !ok {
+		t.Fatalf("expected failure detail object, got %T", failures[0])
+	}
+	reason, _ := first["reason"].(string)
+	if !strings.Contains(reason, snippet) {
+		t.Fatalf("expected failure reason to contain %q, got %q", snippet, reason)
+	}
+}
+
+func assertBatchFailureNameAndReason(t *testing.T, result map[string]interface{}, expectedName, reasonSnippet string) {
+	t.Helper()
+	failures, ok := result["failures"].([]interface{})
+	if !ok || len(failures) != 1 {
+		t.Fatalf("expected exactly one failure detail, got %#v", result["failures"])
+	}
+	first, ok := failures[0].(map[string]interface{})
+	if !ok {
+		t.Fatalf("expected failure detail object, got %T", failures[0])
+	}
+	gotName, _ := first["name"].(string)
+	if strings.TrimSpace(gotName) != expectedName {
+		t.Fatalf("expected failure name %q, got %q", expectedName, gotName)
+	}
+	reason, _ := first["reason"].(string)
+	if !strings.Contains(reason, reasonSnippet) {
+		t.Fatalf("expected failure reason to contain %q, got %q", reasonSnippet, reason)
+	}
+}
+
+func seedForwardForBatchAction(t *testing.T, repo *repo.Repository, opts batchForwardSeedOptions) int64 {
+	t.Helper()
+	if err := repo.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(2, 'batch_action_user', '3c85cdebade1c51cf64ca9f3c09d182d', 1, 2727251700000, 99999, 0, 0, 1, 99999, ?, ?, 1)
+	`, opts.Now, opts.Now).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, opts.TunnelName, 1.0, 1, "tls", 99999, opts.Now, opts.Now, 1, nil, 0).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	tunnelID := mustLastInsertID(t, repo, opts.TunnelName)
+
+	if opts.CreateUserTunnel {
+		if err := repo.DB().Exec(`
+			INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+			VALUES(20, 2, ?, NULL, 999, 99999, 0, 0, 1, 2727251700000, ?)
+		`, tunnelID, opts.UserTunnelStatus).Error; err != nil {
+			t.Fatalf("insert user_tunnel: %v", err)
+		}
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO forward(user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(2, 'batch_action_user', ?, ?, '1.1.1.1:443', 'fifo', 0, 0, ?, ?, 1, 0)
+	`, opts.ForwardName, tunnelID, opts.Now, opts.Now).Error; err != nil {
+		t.Fatalf("insert forward: %v", err)
+	}
+
+	return mustLastInsertID(t, repo, opts.ForwardName)
+}

go-backend/tests/contract/batch_redeploy_error_details_contract_test.go

@@ -0,0 +1,161 @@
+package contract_test
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+	"time"
+
+	"go-backend/internal/auth"
+	"go-backend/internal/http/response"
+)
+
+func TestForwardBatchRedeployReturnsFailureReasonsContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	adminToken, err := auth.GenerateToken(1, "admin_user", 0, secret)
+	if err != nil {
+		t.Fatalf("generate admin token: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(2, 'batch_redeploy_user', '3c85cdebade1c51cf64ca9f3c09d182d', 1, 2727251700000, 99999, 0, 0, 1, 99999, ?, ?, 1)
+	`, now, now).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "batch-redeploy-tunnel", 1.0, 1, "tls", 99999, now, now, 1, nil, 0).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	tunnelID := mustLastInsertID(t, repo, "batch-redeploy-tunnel")
+
+	if err := repo.DB().Exec(`
+		INSERT INTO forward(user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(?, ?, ?, ?, ?, ?, 0, 0, ?, ?, 1, 0)
+	`, 2, "batch_redeploy_user", "redeploy-forward", tunnelID, "1.1.1.1:443", "fifo", now, now).Error; err != nil {
+		t.Fatalf("insert forward: %v", err)
+	}
+	forwardID := mustLastInsertID(t, repo, "redeploy-forward")
+
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/batch-redeploy", bytes.NewBufferString(`{"ids":[`+jsonNumber(forwardID)+`]}`))
+	req.Header.Set("Authorization", adminToken)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+	router.ServeHTTP(res, req)
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code != 0 {
+		t.Fatalf("expected API success envelope, got code=%d msg=%q", out.Code, out.Msg)
+	}
+
+	result, ok := out.Data.(map[string]interface{})
+	if !ok {
+		t.Fatalf("expected map result, got %T", out.Data)
+	}
+	if int(result["failCount"].(float64)) != 1 {
+		t.Fatalf("expected failCount=1, got %v", result["failCount"])
+	}
+	if int(result["successCount"].(float64)) != 0 {
+		t.Fatalf("expected successCount=0, got %v", result["successCount"])
+	}
+
+	failures, ok := result["failures"].([]interface{})
+	if !ok || len(failures) != 1 {
+		t.Fatalf("expected exactly one failure detail, got %#v", result["failures"])
+	}
+	first, ok := failures[0].(map[string]interface{})
+	if !ok {
+		t.Fatalf("expected failure detail object, got %T", failures[0])
+	}
+	if gotName := strings.TrimSpace(first["name"].(string)); gotName != "redeploy-forward" {
+		t.Fatalf("expected failure name redeploy-forward, got %q", gotName)
+	}
+	reason, _ := first["reason"].(string)
+	if !strings.Contains(reason, "转发入口端口不存在") {
+		t.Fatalf("expected forward failure reason to mention missing entry port, got %q", reason)
+	}
+}
+
+func TestTunnelBatchRedeployReturnsFailureReasonsContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	adminToken, err := auth.GenerateToken(1, "admin_user", 0, secret)
+	if err != nil {
+		t.Fatalf("generate admin token: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "broken-redeploy-tunnel", 1.0, 2, "tls", 99999, now, now, 1, nil, 0).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	tunnelID := mustLastInsertID(t, repo, "broken-redeploy-tunnel")
+
+	if err := repo.DB().Exec(`
+		INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "entry-only-node", "entry-only-secret", "10.0.0.20", "10.0.0.20", "", "20000-20010", "", "v1", 1, 1, 1, now, now, 1, "[::]", "[::]", 0).Error; err != nil {
+		t.Fatalf("insert node: %v", err)
+	}
+	entryNodeID := mustLastInsertID(t, repo, "entry-only-node")
+
+	if err := repo.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 1, ?, 20001, 'round', 1, 'tls')
+	`, tunnelID, entryNodeID).Error; err != nil {
+		t.Fatalf("insert chain_tunnel: %v", err)
+	}
+
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/tunnel/batch-redeploy", bytes.NewBufferString(`{"ids":[`+jsonNumber(tunnelID)+`]}`))
+	req.Header.Set("Authorization", adminToken)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+	router.ServeHTTP(res, req)
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code != 0 {
+		t.Fatalf("expected API success envelope, got code=%d msg=%q", out.Code, out.Msg)
+	}
+
+	result, ok := out.Data.(map[string]interface{})
+	if !ok {
+		t.Fatalf("expected map result, got %T", out.Data)
+	}
+	if int(result["failCount"].(float64)) != 1 {
+		t.Fatalf("expected failCount=1, got %v", result["failCount"])
+	}
+
+	failures, ok := result["failures"].([]interface{})
+	if !ok || len(failures) != 1 {
+		t.Fatalf("expected exactly one failure detail, got %#v", result["failures"])
+	}
+	first, ok := failures[0].(map[string]interface{})
+	if !ok {
+		t.Fatalf("expected failure detail object, got %T", failures[0])
+	}
+	if gotName := strings.TrimSpace(first["name"].(string)); gotName != "broken-redeploy-tunnel" {
+		t.Fatalf("expected failure name broken-redeploy-tunnel, got %q", gotName)
+	}
+	reason, _ := first["reason"].(string)
+	if !strings.Contains(reason, "转发链目标不能为空") {
+		t.Fatalf("expected tunnel failure reason to mention missing target, got %q", reason)
+	}
+}

go-backend/tests/contract/db_test_helper_test.go

@@ -0,0 +1,161 @@
+package contract_test
+
+import (
+	"database/sql"
+	"strconv"
+	"strings"
+	"testing"
+
+	"go-backend/internal/store/repo"
+)
+
+func mustLastInsertID(t *testing.T, r *repo.Repository, label string) int64 {
+	t.Helper()
+	var id int64
+	if err := r.DB().Raw("SELECT last_insert_rowid()").Row().Scan(&id); err != nil {
+		t.Fatalf("read last_insert_rowid for %s: %v", label, err)
+	}
+	if id <= 0 {
+		t.Fatalf("invalid last_insert_rowid for %s: %d", label, id)
+	}
+	return id
+}
+
+func mustQueryInt(t *testing.T, r *repo.Repository, query string, args ...interface{}) int {
+	t.Helper()
+	var v int
+	if err := r.DB().Raw(query, args...).Row().Scan(&v); err != nil {
+		t.Fatalf("query int failed: %v (query=%q)", err, query)
+	}
+	return v
+}
+
+func mustQueryInt64(t *testing.T, r *repo.Repository, query string, args ...interface{}) int64 {
+	t.Helper()
+	var v int64
+	if err := r.DB().Raw(query, args...).Row().Scan(&v); err != nil {
+		t.Fatalf("query int64 failed: %v (query=%q)", err, query)
+	}
+	return v
+}
+
+func mustQueryString(t *testing.T, r *repo.Repository, query string, args ...interface{}) string {
+	t.Helper()
+	var v string
+	if err := r.DB().Raw(query, args...).Row().Scan(&v); err != nil {
+		t.Fatalf("query string failed: %v (query=%q)", err, query)
+	}
+	return v
+}
+
+func mustQueryInt64Int(t *testing.T, r *repo.Repository, query string, args ...interface{}) (int64, int) {
+	t.Helper()
+	var a int64
+	var b int
+	if err := r.DB().Raw(query, args...).Row().Scan(&a, &b); err != nil {
+		t.Fatalf("query int64+int failed: %v (query=%q)", err, query)
+	}
+	return a, b
+}
+
+func tryQueryString(t *testing.T, r *repo.Repository, query string, args ...interface{}) (string, error) {
+	t.Helper()
+	var v string
+	err := r.DB().Raw(query, args...).Row().Scan(&v)
+	if err != nil {
+		return "", err
+	}
+	return v, nil
+}
+
+func mustQueryNullString(t *testing.T, r *repo.Repository, query string, args ...interface{}) sql.NullString {
+	t.Helper()
+	var v sql.NullString
+	if err := r.DB().Raw(query, args...).Row().Scan(&v); err != nil {
+		t.Fatalf("query null string failed: %v (query=%q)", err, query)
+	}
+	return v
+}
+
+func mustQueryTwoNullStrings(t *testing.T, r *repo.Repository, query string, args ...interface{}) (sql.NullString, sql.NullString) {
+	t.Helper()
+	var a sql.NullString
+	var b sql.NullString
+	if err := r.DB().Raw(query, args...).Row().Scan(&a, &b); err != nil {
+		t.Fatalf("query two null strings failed: %v (query=%q)", err, query)
+	}
+	return a, b
+}
+
+func mustQueryNodePorts(t *testing.T, r *repo.Repository, query string, args ...interface{}) map[int64]int {
+	t.Helper()
+	rows, err := r.DB().Raw(query, args...).Rows()
+	if err != nil {
+		t.Fatalf("query node ports failed: %v (query=%q)", err, query)
+	}
+	defer rows.Close()
+
+	out := make(map[int64]int)
+	for rows.Next() {
+		var nodeID int64
+		var port int
+		if err := rows.Scan(&nodeID, &port); err != nil {
+			t.Fatalf("scan node ports row failed: %v (query=%q)", err, query)
+		}
+		out[nodeID] = port
+	}
+	if err := rows.Err(); err != nil {
+		t.Fatalf("iterate node ports rows failed: %v (query=%q)", err, query)
+	}
+	return out
+}
+
+func tryQueryInt(t *testing.T, r *repo.Repository, query string, args ...interface{}) (int, error) {
+	t.Helper()
+	var v int
+	err := r.DB().Raw(query, args...).Row().Scan(&v)
+	if err != nil {
+		return 0, err
+	}
+	return v, nil
+}
+
+func valueAsInt(v interface{}) int {
+	switch n := v.(type) {
+	case float64:
+		return int(n)
+	case int:
+		return n
+	case int64:
+		return int(n)
+	default:
+		return 0
+	}
+}
+
+func valueAsString(v interface{}) string {
+	s, _ := v.(string)
+	return s
+}
+
+func valueAsBool(v interface{}) bool {
+	switch b := v.(type) {
+	case bool:
+		return b
+	case float64:
+		return b != 0
+	case int:
+		return b != 0
+	case int64:
+		return b != 0
+	case string:
+		s := strings.TrimSpace(strings.ToLower(b))
+		return s == "1" || s == "t" || s == "true" || s == "yes" || s == "y"
+	default:
+		return false
+	}
+}
+
+func jsonInt64(v int64) string {
+	return strconv.FormatInt(v, 10)
+}

go-backend/tests/contract/diagnosis_contract_test.go

@@ -0,0 +1,628 @@
+package contract_test
+
+import (
+	"bufio"
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"strconv"
+	"strings"
+	"sync/atomic"
+	"testing"
+	"time"
+
+	"go-backend/internal/auth"
+	"go-backend/internal/http/response"
+)
+
+func TestDiagnosisChainCoverageContracts(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, r := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	if err := r.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(2, 'normal_user', '3c85cdebade1c51cf64ca9f3c09d182d', 1, 2727251700000, 99999, 0, 0, 1, 99999, ?, ?, 1)
+	`, now, now).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "diagnose-chain-tunnel", 1.0, 2, "tls", 99999, now, now, 1, nil, 0).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	tunnelID := mustLastInsertID(t, r, "diagnose-chain-tunnel")
+
+	insertNode := func(name, ip string) int64 {
+		if err := r.DB().Exec(`
+			INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx)
+			VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+		`, name, name+"-secret", ip, ip, "", "30000-30010", "", "v1", 1, 1, 1, now, now, 1, "[::]", "[::]", 0).Error; err != nil {
+			t.Fatalf("insert node %s: %v", name, err)
+		}
+		return mustLastInsertID(t, r, name)
+	}
+
+	entryNodeID := insertNode("entry-node", "10.0.1.10")
+	chainNodeID := insertNode("chain-node", "10.0.1.20")
+	exitNodeID := insertNode("exit-node", "10.0.1.30")
+
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 1, ?, 30001, 'round', 1, 'tls')
+	`, tunnelID, entryNodeID).Error; err != nil {
+		t.Fatalf("insert entry chain: %v", err)
+	}
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 2, ?, 30002, 'round', 1, 'tls')
+	`, tunnelID, chainNodeID).Error; err != nil {
+		t.Fatalf("insert middle chain: %v", err)
+	}
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 3, ?, 30003, 'round', 1, 'tls')
+	`, tunnelID, exitNodeID).Error; err != nil {
+		t.Fatalf("insert exit chain: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO forward(user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(?, ?, ?, ?, ?, ?, 0, 0, ?, ?, 1, ?)
+	`, 2, "normal_user", "chain-forward", tunnelID, "8.8.8.8:53", "fifo", now, now, 0).Error; err != nil {
+		t.Fatalf("insert forward: %v", err)
+	}
+	forwardID := mustLastInsertID(t, r, "chain-forward")
+
+	userToken, err := auth.GenerateToken(2, "normal_user", 1, secret)
+	if err != nil {
+		t.Fatalf("generate user token: %v", err)
+	}
+	adminToken, err := auth.GenerateToken(1, "admin_user", 0, secret)
+	if err != nil {
+		t.Fatalf("generate admin token: %v", err)
+	}
+
+	t.Run("forward diagnose includes entry chain exit paths", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/diagnose", bytes.NewBufferString(`{"forwardId":`+strconv.FormatInt(forwardID, 10)+`}`))
+		req.Header.Set("Authorization", userToken)
+		res := httptest.NewRecorder()
+
+		router.ServeHTTP(res, req)
+
+		var out response.R
+		if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+			t.Fatalf("decode response: %v", err)
+		}
+		if out.Code != 0 {
+			t.Fatalf("expected code 0, got %d (%s)", out.Code, out.Msg)
+		}
+
+		payload, ok := out.Data.(map[string]interface{})
+		if !ok {
+			t.Fatalf("expected object payload, got %T", out.Data)
+		}
+		results, ok := payload["results"].([]interface{})
+		if !ok || len(results) == 0 {
+			t.Fatalf("expected non-empty results, got %v", payload["results"])
+		}
+
+		hasEntryToChain := false
+		hasChainToExit := false
+		hasExitToTarget := false
+		for _, raw := range results {
+			item, ok := raw.(map[string]interface{})
+			if !ok {
+				t.Fatalf("expected result object, got %T", raw)
+			}
+			if strings.TrimSpace(valueAsString(item["message"])) == "" {
+				t.Fatalf("expected non-empty message field")
+			}
+			from := valueAsInt(item["fromChainType"])
+			to := valueAsInt(item["toChainType"])
+			if from == 1 && to == 2 {
+				hasEntryToChain = true
+			}
+			if from == 2 && to == 3 {
+				hasChainToExit = true
+			}
+			if from == 3 {
+				hasExitToTarget = true
+			}
+		}
+
+		if !hasEntryToChain || !hasChainToExit || !hasExitToTarget {
+			t.Fatalf("expected entry->chain, chain->exit, exit->target coverage; got entry=%v chain=%v exit=%v", hasEntryToChain, hasChainToExit, hasExitToTarget)
+		}
+	})
+
+	t.Run("tunnel diagnose includes entry chain exit groups", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/tunnel/diagnose", bytes.NewBufferString(`{"tunnelId":`+strconv.FormatInt(tunnelID, 10)+`}`))
+		req.Header.Set("Authorization", adminToken)
+		res := httptest.NewRecorder()
+
+		router.ServeHTTP(res, req)
+
+		var out response.R
+		if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+			t.Fatalf("decode response: %v", err)
+		}
+		if out.Code != 0 {
+			t.Fatalf("expected code 0, got %d (%s)", out.Code, out.Msg)
+		}
+
+		payload, ok := out.Data.(map[string]interface{})
+		if !ok {
+			t.Fatalf("expected object payload, got %T", out.Data)
+		}
+		results, ok := payload["results"].([]interface{})
+		if !ok || len(results) == 0 {
+			t.Fatalf("expected non-empty results, got %v", payload["results"])
+		}
+
+		hasEntry := false
+		hasChain := false
+		hasExit := false
+		for _, raw := range results {
+			item, ok := raw.(map[string]interface{})
+			if !ok {
+				t.Fatalf("expected result object, got %T", raw)
+			}
+			if strings.TrimSpace(valueAsString(item["message"])) == "" {
+				t.Fatalf("expected non-empty message field")
+			}
+			switch valueAsInt(item["fromChainType"]) {
+			case 1:
+				hasEntry = true
+			case 2:
+				hasChain = true
+			case 3:
+				hasExit = true
+			}
+		}
+
+		if !hasEntry || !hasChain || !hasExit {
+			t.Fatalf("expected entry/chain/exit groups, got entry=%v chain=%v exit=%v", hasEntry, hasChain, hasExit)
+		}
+	})
+}
+
+func TestForwardDiagnosisRespectsTunnelIPPreferenceContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, r := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	if err := r.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(2, 'normal_user', '3c85cdebade1c51cf64ca9f3c09d182d', 1, 2727251700000, 99999, 0, 0, 1, 99999, ?, ?, 1)
+	`, now, now).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx, ip_preference)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "diagnose-ip-pref-forward", 1.0, 2, "tls", 99999, now, now, 1, nil, 0, "v6").Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	tunnelID := mustLastInsertID(t, r, "diagnose-ip-pref-forward")
+
+	insertNode := func(name, v4, v6 string) int64 {
+		if err := r.DB().Exec(`
+			INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx)
+			VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+		`, name, name+"-secret", v4, v4, v6, "30000-30010", "", "v1", 1, 1, 1, now, now, 1, "[::]", "[::]", 0).Error; err != nil {
+			t.Fatalf("insert node %s: %v", name, err)
+		}
+		return mustLastInsertID(t, r, name)
+	}
+
+	entryNodeID := insertNode("entry-node-v6", "10.10.1.10", "2001:db8:10::10")
+	chainNodeID := insertNode("chain-node-v6", "10.10.1.20", "2001:db8:10::20")
+	exitNodeID := insertNode("exit-node-v6", "10.10.1.30", "2001:db8:10::30")
+
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 1, ?, 30001, 'round', 1, 'tls')
+	`, tunnelID, entryNodeID).Error; err != nil {
+		t.Fatalf("insert entry chain: %v", err)
+	}
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 2, ?, 30002, 'round', 1, 'tls')
+	`, tunnelID, chainNodeID).Error; err != nil {
+		t.Fatalf("insert middle chain: %v", err)
+	}
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 3, ?, 30003, 'round', 1, 'tls')
+	`, tunnelID, exitNodeID).Error; err != nil {
+		t.Fatalf("insert exit chain: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO forward(user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(?, ?, ?, ?, ?, ?, 0, 0, ?, ?, 1, ?)
+	`, 2, "normal_user", "ip-pref-forward", tunnelID, "8.8.8.8:53", "fifo", now, now, 0).Error; err != nil {
+		t.Fatalf("insert forward: %v", err)
+	}
+	forwardID := mustLastInsertID(t, r, "ip-pref-forward")
+
+	userToken, err := auth.GenerateToken(2, "normal_user", 1, secret)
+	if err != nil {
+		t.Fatalf("generate user token: %v", err)
+	}
+
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/diagnose", bytes.NewBufferString(`{"forwardId":`+strconv.FormatInt(forwardID, 10)+`}`))
+	req.Header.Set("Authorization", userToken)
+	res := httptest.NewRecorder()
+
+	router.ServeHTTP(res, req)
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code != 0 {
+		t.Fatalf("expected code 0, got %d (%s)", out.Code, out.Msg)
+	}
+
+	payload, ok := out.Data.(map[string]interface{})
+	if !ok {
+		t.Fatalf("expected object payload, got %T", out.Data)
+	}
+	results, ok := payload["results"].([]interface{})
+	if !ok || len(results) == 0 {
+		t.Fatalf("expected non-empty results, got %v", payload["results"])
+	}
+
+	hasEntryToChain := false
+	hasChainToExit := false
+	for _, raw := range results {
+		item, ok := raw.(map[string]interface{})
+		if !ok {
+			continue
+		}
+		from := valueAsInt(item["fromChainType"])
+		to := valueAsInt(item["toChainType"])
+		targetIP := strings.TrimSpace(valueAsString(item["targetIp"]))
+
+		if from == 1 && to == 2 {
+			hasEntryToChain = true
+			if targetIP != "2001:db8:10::20" {
+				t.Fatalf("expected entry->chain diagnosis target to use IPv6, got %q", targetIP)
+			}
+		}
+
+		if from == 2 && to == 3 {
+			hasChainToExit = true
+			if targetIP != "2001:db8:10::30" {
+				t.Fatalf("expected chain->exit diagnosis target to use IPv6, got %q", targetIP)
+			}
+		}
+	}
+
+	if !hasEntryToChain || !hasChainToExit {
+		t.Fatalf("expected entry->chain and chain->exit steps, got entry=%v chain=%v", hasEntryToChain, hasChainToExit)
+	}
+}
+
+func TestDiagnosisUsesFederationRuntimeForRemoteNodes(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, r := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	remoteToken := "remote-diagnose-token"
+	var remoteDiagnoseCalls int32
+	remoteServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path != "/api/v1/federation/runtime/diagnose" {
+			http.NotFound(w, r)
+			return
+		}
+		if got := strings.TrimSpace(r.Header.Get("Authorization")); got != "Bearer "+remoteToken {
+			w.WriteHeader(http.StatusUnauthorized)
+			_ = json.NewEncoder(w).Encode(map[string]interface{}{"code": -1, "msg": "unauthorized"})
+			return
+		}
+
+		var req map[string]interface{}
+		if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+			w.WriteHeader(http.StatusBadRequest)
+			_ = json.NewEncoder(w).Encode(map[string]interface{}{"code": -1, "msg": "bad request"})
+			return
+		}
+		if strings.TrimSpace(valueAsString(req["ip"])) != "10.50.0.30" {
+			w.WriteHeader(http.StatusBadRequest)
+			_ = json.NewEncoder(w).Encode(map[string]interface{}{"code": -1, "msg": "unexpected target ip"})
+			return
+		}
+		if valueAsInt(req["port"]) != 30003 {
+			w.WriteHeader(http.StatusBadRequest)
+			_ = json.NewEncoder(w).Encode(map[string]interface{}{"code": -1, "msg": "unexpected target port"})
+			return
+		}
+
+		atomic.AddInt32(&remoteDiagnoseCalls, 1)
+		_ = json.NewEncoder(w).Encode(map[string]interface{}{
+			"code": 0,
+			"msg":  "success",
+			"data": map[string]interface{}{
+				"success":     true,
+				"averageTime": 12.5,
+				"packetLoss":  0,
+				"message":     "remote tcp ok",
+			},
+		})
+	}))
+	defer remoteServer.Close()
+
+	insertLocalNode := func(name, ip string) int64 {
+		if err := r.DB().Exec(`
+			INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx)
+			VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+		`, name, name+"-secret", ip, ip, "", "30000-30010", "", "v1", 1, 1, 1, now, now, 1, "[::]", "[::]", 0).Error; err != nil {
+			t.Fatalf("insert local node %s: %v", name, err)
+		}
+		return mustLastInsertID(t, r, name)
+	}
+
+	insertRemoteNode := func(name, ip string) int64 {
+		if err := r.DB().Exec(`
+			INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx, is_remote, remote_url, remote_token, remote_config)
+			VALUES(?, ?, ?, ?, ?, ?, ?, ?, 0, 0, 0, ?, ?, 1, ?, ?, ?, 1, ?, ?, ?)
+		`, name, name+"-secret", ip, "", "", "31000-31010", "", "", now, now, "[::]", "[::]", 1, remoteServer.URL, remoteToken, `{"shareId": 123}`).Error; err != nil {
+			t.Fatalf("insert remote node %s: %v", name, err)
+		}
+		return mustLastInsertID(t, r, name)
+	}
+
+	entryNodeID := insertLocalNode("entry-local", "10.50.0.10")
+	remoteChainNodeID := insertRemoteNode("middle-remote", "10.50.0.20")
+	exitNodeID := insertLocalNode("exit-local", "10.50.0.30")
+
+	if err := r.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "diagnose-remote-tunnel", 1.0, 2, "tls", 99999, now, now, 1, nil, 0).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	tunnelID := mustLastInsertID(t, r, "diagnose-remote-tunnel")
+
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 1, ?, 30001, 'round', 1, 'tls')
+	`, tunnelID, entryNodeID).Error; err != nil {
+		t.Fatalf("insert entry chain: %v", err)
+	}
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 2, ?, 30002, 'round', 1, 'tls')
+	`, tunnelID, remoteChainNodeID).Error; err != nil {
+		t.Fatalf("insert middle chain: %v", err)
+	}
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 3, ?, 30003, 'round', 1, 'tls')
+	`, tunnelID, exitNodeID).Error; err != nil {
+		t.Fatalf("insert exit chain: %v", err)
+	}
+
+	adminToken, err := auth.GenerateToken(1, "admin_user", 0, secret)
+	if err != nil {
+		t.Fatalf("generate admin token: %v", err)
+	}
+
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/tunnel/diagnose", bytes.NewBufferString(`{"tunnelId":`+strconv.FormatInt(tunnelID, 10)+`}`))
+	req.Header.Set("Authorization", adminToken)
+	res := httptest.NewRecorder()
+
+	router.ServeHTTP(res, req)
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code != 0 {
+		t.Fatalf("expected code 0, got %d (%s)", out.Code, out.Msg)
+	}
+
+	payload, ok := out.Data.(map[string]interface{})
+	if !ok {
+		t.Fatalf("expected object payload, got %T", out.Data)
+	}
+	results, ok := payload["results"].([]interface{})
+	if !ok || len(results) == 0 {
+		t.Fatalf("expected non-empty results, got %v", payload["results"])
+	}
+
+	remoteStepFound := false
+	for _, raw := range results {
+		item, ok := raw.(map[string]interface{})
+		if !ok {
+			continue
+		}
+		if valueAsInt(item["fromChainType"]) == 2 && valueAsInt(item["toChainType"]) == 3 {
+			remoteStepFound = true
+			if !valueAsBool(item["success"]) {
+				t.Fatalf("expected remote chain->exit diagnosis success, got item=%v", item)
+			}
+			if strings.TrimSpace(valueAsString(item["message"])) != "remote tcp ok" {
+				t.Fatalf("expected remote diagnosis message, got %q", valueAsString(item["message"]))
+			}
+		}
+	}
+
+	if !remoteStepFound {
+		t.Fatalf("expected chain->exit diagnosis item for remote node")
+	}
+	if atomic.LoadInt32(&remoteDiagnoseCalls) == 0 {
+		t.Fatalf("expected federation runtime diagnose endpoint to be called")
+	}
+}
+
+func TestTunnelDiagnosisUsesConfiguredConnectIPContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, r := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	insertNode := func(name, ip string) int64 {
+		if err := r.DB().Exec(`
+			INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx)
+			VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+		`, name, name+"-secret", ip, ip, "", "30000-30010", "", "v1", 1, 1, 1, now, now, 1, "[::]", "[::]", 0).Error; err != nil {
+			t.Fatalf("insert node %s: %v", name, err)
+		}
+		return mustLastInsertID(t, r, name)
+	}
+
+	entryNodeID := insertNode("entry-connectip", "10.80.0.10")
+	middleNodeID := insertNode("middle-connectip", "10.80.0.20")
+	exitNodeID := insertNode("exit-connectip", "10.80.0.30")
+
+	if err := r.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "diagnose-connectip-tunnel", 1.0, 2, "tls", 99999, now, now, 1, nil, 0).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	tunnelID := mustLastInsertID(t, r, "diagnose-connectip-tunnel")
+
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 1, ?, 30001, 'round', 1, 'tls')
+	`, tunnelID, entryNodeID).Error; err != nil {
+		t.Fatalf("insert entry chain: %v", err)
+	}
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol, connect_ip)
+		VALUES(?, 2, ?, 30002, 'round', 1, 'tls', ?)
+	`, tunnelID, middleNodeID, "10.99.0.22").Error; err != nil {
+		t.Fatalf("insert middle chain: %v", err)
+	}
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol, connect_ip)
+		VALUES(?, 3, ?, 30003, 'round', 1, 'tls', ?)
+	`, tunnelID, exitNodeID, "10.99.0.33").Error; err != nil {
+		t.Fatalf("insert exit chain: %v", err)
+	}
+
+	adminToken, err := auth.GenerateToken(1, "admin_user", 0, secret)
+	if err != nil {
+		t.Fatalf("generate admin token: %v", err)
+	}
+
+	t.Run("normal diagnose should use configured connectIp", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/tunnel/diagnose", bytes.NewBufferString(`{"tunnelId":`+strconv.FormatInt(tunnelID, 10)+`}`))
+		req.Header.Set("Authorization", adminToken)
+		res := httptest.NewRecorder()
+
+		router.ServeHTTP(res, req)
+
+		var out response.R
+		if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+			t.Fatalf("decode response: %v", err)
+		}
+		if out.Code != 0 {
+			t.Fatalf("expected code 0, got %d (%s)", out.Code, out.Msg)
+		}
+
+		payload, ok := out.Data.(map[string]interface{})
+		if !ok {
+			t.Fatalf("expected object payload, got %T", out.Data)
+		}
+		results, ok := payload["results"].([]interface{})
+		if !ok || len(results) == 0 {
+			t.Fatalf("expected non-empty results, got %v", payload["results"])
+		}
+
+		entryToMiddleOK := false
+		middleToExitOK := false
+		for _, raw := range results {
+			item, ok := raw.(map[string]interface{})
+			if !ok {
+				continue
+			}
+			from := valueAsInt(item["fromChainType"])
+			to := valueAsInt(item["toChainType"])
+			targetIP := strings.TrimSpace(valueAsString(item["targetIp"]))
+
+			if from == 1 && to == 2 && targetIP == "10.99.0.22" {
+				entryToMiddleOK = true
+			}
+			if from == 2 && to == 3 && targetIP == "10.99.0.33" {
+				middleToExitOK = true
+			}
+		}
+
+		if !entryToMiddleOK || !middleToExitOK {
+			t.Fatalf("expected connectIp targets 10.99.0.22/10.99.0.33, got entry=%v middle=%v", entryToMiddleOK, middleToExitOK)
+		}
+	})
+
+	t.Run("stream diagnose start items should use configured connectIp", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/tunnel/diagnose/stream", bytes.NewBufferString(`{"tunnelId":`+strconv.FormatInt(tunnelID, 10)+`}`))
+		req.Header.Set("Authorization", adminToken)
+		res := httptest.NewRecorder()
+
+		router.ServeHTTP(res, req)
+
+		if res.Code != http.StatusOK {
+			t.Fatalf("expected status 200, got %d", res.Code)
+		}
+
+		scanner := bufio.NewScanner(bytes.NewReader(res.Body.Bytes()))
+		startFound := false
+		entryToMiddleOK := false
+		middleToExitOK := false
+		for scanner.Scan() {
+			line := strings.TrimSpace(scanner.Text())
+			if line == "" {
+				continue
+			}
+			var event map[string]interface{}
+			if err := json.Unmarshal([]byte(line), &event); err != nil {
+				continue
+			}
+			if strings.TrimSpace(valueAsString(event["type"])) != "start" {
+				continue
+			}
+			startFound = true
+			data, ok := event["data"].(map[string]interface{})
+			if !ok {
+				break
+			}
+			items, ok := data["items"].([]interface{})
+			if !ok {
+				break
+			}
+			for _, raw := range items {
+				item, ok := raw.(map[string]interface{})
+				if !ok {
+					continue
+				}
+				from := valueAsInt(item["fromChainType"])
+				to := valueAsInt(item["toChainType"])
+				targetIP := strings.TrimSpace(valueAsString(item["targetIp"]))
+				if from == 1 && to == 2 && targetIP == "10.99.0.22" {
+					entryToMiddleOK = true
+				}
+				if from == 2 && to == 3 && targetIP == "10.99.0.33" {
+					middleToExitOK = true
+				}
+			}
+			break
+		}
+		if err := scanner.Err(); err != nil {
+			t.Fatalf("scan stream body: %v", err)
+		}
+		if !startFound {
+			t.Fatalf("expected start event in stream response")
+		}
+		if !entryToMiddleOK || !middleToExitOK {
+			t.Fatalf("expected start items with connectIp targets 10.99.0.22/10.99.0.33, got entry=%v middle=%v", entryToMiddleOK, middleToExitOK)
+		}
+	})
+}

go-backend/tests/contract/federation_dual_panel_contract_test.go

@@ -0,0 +1,749 @@
+package contract_test
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"strings"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/gorilla/websocket"
+
+	"go-backend/internal/auth"
+	"go-backend/internal/http/response"
+	"go-backend/internal/security"
+	"go-backend/internal/store/repo"
+)
+
+func TestFederationDualPanelMiddleExitAutoPortContract(t *testing.T) {
+	providerSecret := "provider-contract-jwt"
+	providerRouter, providerRepo := setupContractRouter(t, providerSecret)
+	providerServer := httptest.NewServer(providerRouter)
+	defer providerServer.Close()
+
+	consumerSecret := "consumer-contract-jwt"
+	consumerRouter, consumerRepo := setupContractRouter(t, consumerSecret)
+
+	consumerAdminToken, err := auth.GenerateToken(1, "consumer-admin", 0, consumerSecret)
+	if err != nil {
+		t.Fatalf("generate consumer admin token: %v", err)
+	}
+
+	now := time.Now().UnixMilli()
+	providerEntryNodeID := insertContractNode(t, providerRepo, "provider-entry", "198.51.100.11", "43000-43010", "provider-entry-secret", 1)
+	providerMiddleNodeID := insertContractNode(t, providerRepo, "provider-middle", "198.51.100.12", "44000-44010", "provider-middle-secret", 1)
+	providerExitNodeID := insertContractNode(t, providerRepo, "provider-exit", "198.51.100.13", "45000-45010", "provider-exit-secret", 1)
+
+	entryShareID := insertPeerShare(t, providerRepo, &repo.PeerShare{
+		Name:           "entry-share",
+		NodeID:         providerEntryNodeID,
+		Token:          "share-entry-token",
+		PortRangeStart: 43000,
+		PortRangeEnd:   43010,
+		IsActive:       1,
+		CreatedTime:    now,
+		UpdatedTime:    now,
+	})
+	middleShareID := insertPeerShare(t, providerRepo, &repo.PeerShare{
+		Name:           "middle-share",
+		NodeID:         providerMiddleNodeID,
+		Token:          "share-middle-token",
+		PortRangeStart: 44000,
+		PortRangeEnd:   44010,
+		IsActive:       1,
+		CreatedTime:    now,
+		UpdatedTime:    now,
+	})
+	exitShareID := insertPeerShare(t, providerRepo, &repo.PeerShare{
+		Name:           "exit-share",
+		NodeID:         providerExitNodeID,
+		Token:          "share-exit-token",
+		PortRangeStart: 45000,
+		PortRangeEnd:   45010,
+		IsActive:       1,
+		CreatedTime:    now,
+		UpdatedTime:    now,
+	})
+
+	importRemoteNodeForContract(t, consumerRouter, consumerAdminToken, providerServer.URL, "share-entry-token")
+	importRemoteNodeForContract(t, consumerRouter, consumerAdminToken, providerServer.URL, "share-middle-token")
+	importRemoteNodeForContract(t, consumerRouter, consumerAdminToken, providerServer.URL, "share-exit-token")
+
+	entryRemoteNodeID := queryRemoteNodeIDByToken(t, consumerRepo, "share-entry-token")
+	middleRemoteNodeID := queryRemoteNodeIDByToken(t, consumerRepo, "share-middle-token")
+	exitRemoteNodeID := queryRemoteNodeIDByToken(t, consumerRepo, "share-exit-token")
+
+	stopEntry := startMockNodeSession(t, providerServer.URL, "provider-entry-secret")
+	defer stopEntry()
+	stopMiddle := startMockNodeSession(t, providerServer.URL, "provider-middle-secret")
+	defer stopMiddle()
+	stopExit := startMockNodeSession(t, providerServer.URL, "provider-exit-secret")
+	defer stopExit()
+
+	createTunnel := func(name string) int64 {
+		payload := map[string]interface{}{
+			"name":   name,
+			"type":   2,
+			"flow":   99999,
+			"status": 1,
+			"inNodeId": []map[string]interface{}{
+				{"nodeId": entryRemoteNodeID, "protocol": "tls", "strategy": "round"},
+			},
+			"chainNodes": [][]map[string]interface{}{
+				{{"nodeId": middleRemoteNodeID, "protocol": "tls", "strategy": "round"}},
+			},
+			"outNodeId": []map[string]interface{}{
+				{"nodeId": exitRemoteNodeID, "protocol": "tls", "strategy": "round"},
+			},
+		}
+		body, err := json.Marshal(payload)
+		if err != nil {
+			t.Fatalf("marshal create payload: %v", err)
+		}
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/tunnel/create", bytes.NewReader(body))
+		req.Header.Set("Authorization", consumerAdminToken)
+		req.Header.Set("Content-Type", "application/json")
+		res := httptest.NewRecorder()
+		consumerRouter.ServeHTTP(res, req)
+		assertCode(t, res, 0)
+
+		tunnelID := mustQueryInt64(t, consumerRepo, `SELECT id FROM tunnel WHERE name = ? ORDER BY id DESC LIMIT 1`, name)
+		if tunnelID <= 0 {
+			t.Fatalf("invalid tunnel id for %s", name)
+		}
+		return tunnelID
+	}
+
+	firstTunnelID := createTunnel("dual-panel-middle-exit-1")
+
+	assertTunnelPortInRange(t, consumerRepo, firstTunnelID, 2, middleRemoteNodeID, 44000, 44010)
+	assertTunnelPortInRange(t, consumerRepo, firstTunnelID, 3, exitRemoteNodeID, 45000, 45010)
+
+	assertCount(t, consumerRepo, `SELECT COUNT(1) FROM federation_tunnel_binding WHERE tunnel_id = ? AND status = 1`, firstTunnelID, 2)
+	assertCount(t, providerRepo, `SELECT COUNT(1) FROM peer_share_runtime WHERE share_id = ? AND status = 1 AND applied = 1`, middleShareID, 1)
+	assertCount(t, providerRepo, `SELECT COUNT(1) FROM peer_share_runtime WHERE share_id = ? AND status = 1 AND applied = 1`, exitShareID, 1)
+
+	deleteBody, err := json.Marshal(map[string]interface{}{"id": firstTunnelID})
+	if err != nil {
+		t.Fatalf("marshal delete payload: %v", err)
+	}
+	deleteReq := httptest.NewRequest(http.MethodPost, "/api/v1/tunnel/delete", bytes.NewReader(deleteBody))
+	deleteReq.Header.Set("Authorization", consumerAdminToken)
+	deleteReq.Header.Set("Content-Type", "application/json")
+	deleteRes := httptest.NewRecorder()
+	consumerRouter.ServeHTTP(deleteRes, deleteReq)
+	assertCode(t, deleteRes, 0)
+
+	assertCount(t, consumerRepo, `SELECT COUNT(1) FROM federation_tunnel_binding WHERE tunnel_id = ?`, firstTunnelID, 0)
+	assertCount(t, providerRepo, `SELECT COUNT(1) FROM peer_share_runtime WHERE share_id = ? AND status = 0`, middleShareID, 1)
+	assertCount(t, providerRepo, `SELECT COUNT(1) FROM peer_share_runtime WHERE share_id = ? AND status = 0`, exitShareID, 1)
+
+	secondTunnelID := createTunnel("dual-panel-middle-exit-2")
+	assertTunnelPortInRange(t, consumerRepo, secondTunnelID, 2, middleRemoteNodeID, 44000, 44010)
+	assertTunnelPortInRange(t, consumerRepo, secondTunnelID, 3, exitRemoteNodeID, 45000, 45010)
+
+	forwardPayload := map[string]interface{}{
+		"name":       "dual-panel-remote-entry-forward",
+		"tunnelId":   secondTunnelID,
+		"remoteAddr": "1.1.1.1:443",
+		"strategy":   "fifo",
+	}
+	forwardBody, err := json.Marshal(forwardPayload)
+	if err != nil {
+		t.Fatalf("marshal forward payload: %v", err)
+	}
+	forwardReq := httptest.NewRequest(http.MethodPost, "/api/v1/forward/create", bytes.NewReader(forwardBody))
+	forwardReq.Header.Set("Authorization", consumerAdminToken)
+	forwardReq.Header.Set("Content-Type", "application/json")
+	forwardRes := httptest.NewRecorder()
+	consumerRouter.ServeHTTP(forwardRes, forwardReq)
+	assertCode(t, forwardRes, 0)
+
+	assertCount(t, providerRepo, `SELECT COUNT(1) FROM peer_share_runtime WHERE share_id = ? AND status = 1 AND applied = 1`, middleShareID, 1)
+	assertCount(t, providerRepo, `SELECT COUNT(1) FROM peer_share_runtime WHERE share_id = ? AND status = 1 AND applied = 1`, exitShareID, 1)
+	assertCount(t, providerRepo, `SELECT COUNT(1) FROM peer_share_runtime WHERE share_id = ? AND status = 1 AND applied = 1`, entryShareID, 1)
+}
+
+func TestFederationDualPanelRemoteDiagnosisContract(t *testing.T) {
+	providerSecret := "provider-contract-jwt"
+	providerRouter, providerRepo := setupContractRouter(t, providerSecret)
+	providerServer := httptest.NewServer(providerRouter)
+	defer providerServer.Close()
+
+	consumerSecret := "consumer-contract-jwt"
+	consumerRouter, consumerRepo := setupContractRouter(t, consumerSecret)
+
+	consumerAdminToken, err := auth.GenerateToken(1, "consumer-admin", 0, consumerSecret)
+	if err != nil {
+		t.Fatalf("generate consumer admin token: %v", err)
+	}
+
+	now := time.Now().UnixMilli()
+	providerEntryNodeID := insertContractNode(t, providerRepo, "provider-entry-dx", "203.0.113.11", "53000-53010", "provider-entry-dx-secret", 1)
+	providerMiddleNodeID := insertContractNode(t, providerRepo, "provider-middle-dx", "203.0.113.12", "54000-54010", "provider-middle-dx-secret", 1)
+	providerExitNodeID := insertContractNode(t, providerRepo, "provider-exit-dx", "203.0.113.13", "55000-55010", "provider-exit-dx-secret", 1)
+
+	entryShareID := insertPeerShare(t, providerRepo, &repo.PeerShare{
+		Name:           "entry-share-dx",
+		NodeID:         providerEntryNodeID,
+		Token:          "share-entry-dx-token",
+		PortRangeStart: 53000,
+		PortRangeEnd:   53010,
+		IsActive:       1,
+		CreatedTime:    now,
+		UpdatedTime:    now,
+	})
+	middleShareID := insertPeerShare(t, providerRepo, &repo.PeerShare{
+		Name:           "middle-share-dx",
+		NodeID:         providerMiddleNodeID,
+		Token:          "share-middle-dx-token",
+		PortRangeStart: 54000,
+		PortRangeEnd:   54010,
+		IsActive:       1,
+		CreatedTime:    now,
+		UpdatedTime:    now,
+	})
+	exitShareID := insertPeerShare(t, providerRepo, &repo.PeerShare{
+		Name:           "exit-share-dx",
+		NodeID:         providerExitNodeID,
+		Token:          "share-exit-dx-token",
+		PortRangeStart: 55000,
+		PortRangeEnd:   55010,
+		IsActive:       1,
+		CreatedTime:    now,
+		UpdatedTime:    now,
+	})
+
+	importRemoteNodeForContract(t, consumerRouter, consumerAdminToken, providerServer.URL, "share-entry-dx-token")
+	importRemoteNodeForContract(t, consumerRouter, consumerAdminToken, providerServer.URL, "share-middle-dx-token")
+	importRemoteNodeForContract(t, consumerRouter, consumerAdminToken, providerServer.URL, "share-exit-dx-token")
+
+	entryRemoteNodeID := queryRemoteNodeIDByToken(t, consumerRepo, "share-entry-dx-token")
+	middleRemoteNodeID := queryRemoteNodeIDByToken(t, consumerRepo, "share-middle-dx-token")
+	exitRemoteNodeID := queryRemoteNodeIDByToken(t, consumerRepo, "share-exit-dx-token")
+
+	stopMiddle := startMockNodeSession(t, providerServer.URL, "provider-middle-dx-secret")
+	defer stopMiddle()
+	stopExit := startMockNodeSession(t, providerServer.URL, "provider-exit-dx-secret")
+	defer stopExit()
+
+	createPayload := map[string]interface{}{
+		"name":   "dual-panel-diagnose-remote",
+		"type":   2,
+		"flow":   99999,
+		"status": 1,
+		"inNodeId": []map[string]interface{}{
+			{"nodeId": entryRemoteNodeID, "protocol": "tls", "strategy": "round"},
+		},
+		"chainNodes": [][]map[string]interface{}{
+			{{"nodeId": middleRemoteNodeID, "protocol": "tls", "strategy": "round"}},
+		},
+		"outNodeId": []map[string]interface{}{
+			{"nodeId": exitRemoteNodeID, "protocol": "tls", "strategy": "round"},
+		},
+	}
+	body, err := json.Marshal(createPayload)
+	if err != nil {
+		t.Fatalf("marshal create payload: %v", err)
+	}
+	createReq := httptest.NewRequest(http.MethodPost, "/api/v1/tunnel/create", bytes.NewReader(body))
+	createReq.Header.Set("Authorization", consumerAdminToken)
+	createReq.Header.Set("Content-Type", "application/json")
+	createRes := httptest.NewRecorder()
+	consumerRouter.ServeHTTP(createRes, createReq)
+	assertCode(t, createRes, 0)
+
+	tunnelID := mustQueryInt64(t, consumerRepo, `SELECT id FROM tunnel WHERE name = ? ORDER BY id DESC LIMIT 1`, "dual-panel-diagnose-remote")
+	if tunnelID <= 0 {
+		t.Fatalf("invalid tunnel id")
+	}
+
+	assertCount(t, providerRepo, `SELECT COUNT(1) FROM peer_share_runtime WHERE share_id = ? AND status = 1 AND applied = 1`, middleShareID, 1)
+	assertCount(t, providerRepo, `SELECT COUNT(1) FROM peer_share_runtime WHERE share_id = ? AND status = 1 AND applied = 1`, exitShareID, 1)
+	assertCount(t, providerRepo, `SELECT COUNT(1) FROM peer_share_runtime WHERE share_id = ?`, entryShareID, 0)
+
+	diagnoseReq := httptest.NewRequest(http.MethodPost, "/api/v1/tunnel/diagnose", bytes.NewBufferString(fmt.Sprintf(`{"tunnelId":%d}`, tunnelID)))
+	diagnoseReq.Header.Set("Authorization", consumerAdminToken)
+	diagnoseRes := httptest.NewRecorder()
+	consumerRouter.ServeHTTP(diagnoseRes, diagnoseReq)
+
+	var out response.R
+	if err := json.NewDecoder(diagnoseRes.Body).Decode(&out); err != nil {
+		t.Fatalf("decode diagnose response: %v", err)
+	}
+	if out.Code != 0 {
+		t.Fatalf("expected diagnose code 0, got %d (%s)", out.Code, out.Msg)
+	}
+
+	payload, ok := out.Data.(map[string]interface{})
+	if !ok {
+		t.Fatalf("expected map payload, got %T", out.Data)
+	}
+	results, ok := payload["results"].([]interface{})
+	if !ok || len(results) == 0 {
+		t.Fatalf("expected non-empty results, got %v", payload["results"])
+	}
+
+	chainToExitFound := false
+	for _, raw := range results {
+		item, ok := raw.(map[string]interface{})
+		if !ok {
+			continue
+		}
+		if valueAsInt(item["fromChainType"]) == 2 && valueAsInt(item["toChainType"]) == 3 {
+			chainToExitFound = true
+			if !valueAsBool(item["success"]) {
+				t.Fatalf("expected chain->exit diagnosis success, got item=%v", item)
+			}
+			if msg := strings.TrimSpace(valueAsString(item["message"])); msg != "mock tcp ok" {
+				t.Fatalf("expected remote diagnosis message 'mock tcp ok', got %q", msg)
+			}
+		}
+	}
+	if !chainToExitFound {
+		t.Fatalf("expected chain->exit diagnosis item in results")
+	}
+}
+
+func TestFederationDualPanelRemoteEntryRuntimeContract(t *testing.T) {
+	providerSecret := "provider-contract-jwt"
+	providerRouter, providerRepo := setupContractRouter(t, providerSecret)
+	providerServer := httptest.NewServer(providerRouter)
+	defer providerServer.Close()
+
+	consumerSecret := "consumer-contract-jwt"
+	consumerRouter, consumerRepo := setupContractRouter(t, consumerSecret)
+
+	consumerAdminToken, err := auth.GenerateToken(1, "consumer-admin", 0, consumerSecret)
+	if err != nil {
+		t.Fatalf("generate consumer admin token: %v", err)
+	}
+
+	now := time.Now().UnixMilli()
+	providerEntryNodeID := insertContractNode(t, providerRepo, "provider-entry-rt", "198.51.100.21", "43020-43030", "provider-entry-rt-secret", 1)
+	providerMiddleNodeID := insertContractNode(t, providerRepo, "provider-middle-rt", "198.51.100.22", "44020-44030", "provider-middle-rt-secret", 1)
+	providerExitNodeID := insertContractNode(t, providerRepo, "provider-exit-rt", "198.51.100.23", "45020-45030", "provider-exit-rt-secret", 1)
+
+	insertPeerShare(t, providerRepo, &repo.PeerShare{
+		Name:           "entry-share-rt",
+		NodeID:         providerEntryNodeID,
+		Token:          "share-entry-rt-token",
+		PortRangeStart: 43020,
+		PortRangeEnd:   43030,
+		IsActive:       1,
+		CreatedTime:    now,
+		UpdatedTime:    now,
+	})
+	insertPeerShare(t, providerRepo, &repo.PeerShare{
+		Name:           "middle-share-rt",
+		NodeID:         providerMiddleNodeID,
+		Token:          "share-middle-rt-token",
+		PortRangeStart: 44020,
+		PortRangeEnd:   44030,
+		IsActive:       1,
+		CreatedTime:    now,
+		UpdatedTime:    now,
+	})
+	insertPeerShare(t, providerRepo, &repo.PeerShare{
+		Name:           "exit-share-rt",
+		NodeID:         providerExitNodeID,
+		Token:          "share-exit-rt-token",
+		PortRangeStart: 45020,
+		PortRangeEnd:   45030,
+		IsActive:       1,
+		CreatedTime:    now,
+		UpdatedTime:    now,
+	})
+
+	importRemoteNodeForContract(t, consumerRouter, consumerAdminToken, providerServer.URL, "share-entry-rt-token")
+	importRemoteNodeForContract(t, consumerRouter, consumerAdminToken, providerServer.URL, "share-middle-rt-token")
+	importRemoteNodeForContract(t, consumerRouter, consumerAdminToken, providerServer.URL, "share-exit-rt-token")
+
+	entryRemoteNodeID := queryRemoteNodeIDByToken(t, consumerRepo, "share-entry-rt-token")
+	middleRemoteNodeID := queryRemoteNodeIDByToken(t, consumerRepo, "share-middle-rt-token")
+	exitRemoteNodeID := queryRemoteNodeIDByToken(t, consumerRepo, "share-exit-rt-token")
+
+	var commandMu sync.Mutex
+	entryCommands := make([]string, 0, 8)
+	stopEntry := startMockNodeSessionWithHook(t, providerServer.URL, "provider-entry-rt-secret", func(cmdType string) {
+		commandMu.Lock()
+		entryCommands = append(entryCommands, cmdType)
+		commandMu.Unlock()
+	})
+	defer stopEntry()
+	stopMiddle := startMockNodeSession(t, providerServer.URL, "provider-middle-rt-secret")
+	defer stopMiddle()
+	stopExit := startMockNodeSession(t, providerServer.URL, "provider-exit-rt-secret")
+	defer stopExit()
+
+	createTunnel := func(name string) int64 {
+		payload := map[string]interface{}{
+			"name":   name,
+			"type":   2,
+			"flow":   99999,
+			"status": 1,
+			"inNodeId": []map[string]interface{}{
+				{"nodeId": entryRemoteNodeID, "protocol": "tls", "strategy": "round"},
+			},
+			"chainNodes": [][]map[string]interface{}{
+				{{"nodeId": middleRemoteNodeID, "protocol": "tls", "strategy": "round"}},
+			},
+			"outNodeId": []map[string]interface{}{
+				{"nodeId": exitRemoteNodeID, "protocol": "tls", "strategy": "round"},
+			},
+		}
+		body, err := json.Marshal(payload)
+		if err != nil {
+			t.Fatalf("marshal create payload: %v", err)
+		}
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/tunnel/create", bytes.NewReader(body))
+		req.Header.Set("Authorization", consumerAdminToken)
+		req.Header.Set("Content-Type", "application/json")
+		res := httptest.NewRecorder()
+		consumerRouter.ServeHTTP(res, req)
+		assertCode(t, res, 0)
+
+		tunnelID := mustQueryInt64(t, consumerRepo, `SELECT id FROM tunnel WHERE name = ? ORDER BY id DESC LIMIT 1`, name)
+		if tunnelID <= 0 {
+			t.Fatalf("invalid tunnel id for %s", name)
+		}
+		return tunnelID
+	}
+
+	createTunnel("dual-panel-remote-entry-online")
+
+	commandMu.Lock()
+	seenAddChains := false
+	seenCommands := append([]string(nil), entryCommands...)
+	for _, cmdType := range entryCommands {
+		if strings.EqualFold(strings.TrimSpace(cmdType), "AddChains") {
+			seenAddChains = true
+			break
+		}
+	}
+	commandMu.Unlock()
+	if !seenAddChains {
+		t.Fatalf("expected entry remote node to receive AddChains, commands=%v", seenCommands)
+	}
+
+	stopEntry()
+	waitNodeStatus(t, providerRepo, providerEntryNodeID, 0)
+
+	createTunnel("dual-panel-remote-entry-offline")
+}
+
+func insertContractNode(t *testing.T, r *repo.Repository, name, ip, portRange, secret string, status int) int64 {
+	t.Helper()
+	now := time.Now().UnixMilli()
+	if err := r.DB().Exec(`
+		INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, name, secret, ip, ip, "", portRange, "", "v1", 1, 1, 1, now, now, status, "[::]", "[::]", 0).Error; err != nil {
+		t.Fatalf("insert node %s: %v", name, err)
+	}
+	return mustLastInsertID(t, r, name)
+}
+
+func insertPeerShare(t *testing.T, r *repo.Repository, share *repo.PeerShare) int64 {
+	t.Helper()
+	if share == nil {
+		t.Fatalf("share is nil")
+	}
+	if err := r.CreatePeerShare(share); err != nil {
+		t.Fatalf("create peer share %s: %v", share.Name, err)
+	}
+	saved, err := r.GetPeerShareByToken(share.Token)
+	if err != nil {
+		t.Fatalf("query peer share %s: %v", share.Name, err)
+	}
+	if saved == nil {
+		t.Fatalf("peer share %s not found after create", share.Name)
+	}
+	return saved.ID
+}
+
+func importRemoteNodeForContract(t *testing.T, router http.Handler, adminToken, remoteURL, token string) {
+	t.Helper()
+	body, err := json.Marshal(map[string]string{
+		"remoteUrl": remoteURL,
+		"token":     token,
+	})
+	if err != nil {
+		t.Fatalf("marshal import payload: %v", err)
+	}
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/federation/node/import", bytes.NewReader(body))
+	req.Header.Set("Authorization", adminToken)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+	router.ServeHTTP(res, req)
+	assertCode(t, res, 0)
+}
+
+func queryRemoteNodeIDByToken(t *testing.T, r *repo.Repository, token string) int64 {
+	t.Helper()
+	id := mustQueryInt64(t, r, `SELECT id FROM node WHERE is_remote = 1 AND remote_token = ? ORDER BY id DESC LIMIT 1`, token)
+	if id <= 0 {
+		t.Fatalf("invalid remote node id for token %s", token)
+	}
+	return id
+}
+
+func assertTunnelPortInRange(t *testing.T, r *repo.Repository, tunnelID int64, chainType int, nodeID int64, minPort int, maxPort int) {
+	t.Helper()
+	port := mustQueryInt(t, r, `SELECT port FROM chain_tunnel WHERE tunnel_id = ? AND chain_type = ? AND node_id = ? LIMIT 1`, tunnelID, chainType, nodeID)
+	if port < minPort || port > maxPort {
+		t.Fatalf("expected port in range [%d,%d], got %d", minPort, maxPort, port)
+	}
+}
+
+func assertCount(t *testing.T, r *repo.Repository, query string, arg interface{}, expected int) {
+	t.Helper()
+	got := mustQueryInt(t, r, query, arg)
+	if got != expected {
+		t.Fatalf("expected count %d, got %d (query: %s, arg: %v)", expected, got, query, arg)
+	}
+}
+
+func startMockNodeSession(t *testing.T, baseURL string, nodeSecret string) func() {
+	return startMockNodeSessionWithHook(t, baseURL, nodeSecret, nil)
+}
+
+func startMockNodeSessionWithHook(t *testing.T, baseURL string, nodeSecret string, onCommand func(cmdType string)) func() {
+	t.Helper()
+	u, err := url.Parse(baseURL)
+	if err != nil {
+		t.Fatalf("parse provider url: %v", err)
+	}
+	if strings.EqualFold(u.Scheme, "https") {
+		u.Scheme = "wss"
+	} else {
+		u.Scheme = "ws"
+	}
+	u.Path = "/system-info"
+	q := u.Query()
+	q.Set("type", "1")
+	q.Set("secret", nodeSecret)
+	q.Set("version", "v1")
+	q.Set("http", "1")
+	q.Set("tls", "1")
+	q.Set("socks", "1")
+	u.RawQuery = q.Encode()
+
+	conn, _, err := websocket.DefaultDialer.Dial(u.String(), nil)
+	if err != nil {
+		t.Fatalf("dial mock node websocket: %v", err)
+	}
+
+	var wg sync.WaitGroup
+	wg.Add(1)
+	go func() {
+		defer wg.Done()
+		for {
+			_, raw, readErr := conn.ReadMessage()
+			if readErr != nil {
+				return
+			}
+
+			plain := raw
+			var wrap struct {
+				Encrypted bool   `json:"encrypted"`
+				Data      string `json:"data"`
+			}
+			if err := json.Unmarshal(raw, &wrap); err == nil && wrap.Encrypted && strings.TrimSpace(wrap.Data) != "" {
+				crypto, cryptoErr := security.NewAESCrypto(nodeSecret)
+				if cryptoErr == nil {
+					if dec, decErr := crypto.Decrypt(wrap.Data); decErr == nil {
+						plain = []byte(dec)
+					}
+				}
+			}
+
+			var cmd struct {
+				Type      string `json:"type"`
+				RequestID string `json:"requestId"`
+			}
+			if err := json.Unmarshal(plain, &cmd); err != nil {
+				continue
+			}
+			if strings.TrimSpace(cmd.RequestID) == "" {
+				continue
+			}
+			if onCommand != nil {
+				onCommand(strings.TrimSpace(cmd.Type))
+			}
+
+			respType := fmt.Sprintf("%sResponse", cmd.Type)
+			respPayload := map[string]interface{}{
+				"type":      respType,
+				"success":   true,
+				"message":   "OK",
+				"requestId": cmd.RequestID,
+			}
+			if strings.EqualFold(strings.TrimSpace(cmd.Type), "TcpPing") {
+				respPayload["data"] = map[string]interface{}{
+					"success":     true,
+					"averageTime": 8.5,
+					"packetLoss":  0,
+					"message":     "mock tcp ok",
+				}
+			}
+			respBytes, err := json.Marshal(respPayload)
+			if err != nil {
+				continue
+			}
+			_ = conn.WriteMessage(websocket.TextMessage, respBytes)
+		}
+	}()
+
+	var stopOnce sync.Once
+	return func() {
+		stopOnce.Do(func() {
+			_ = conn.Close()
+			wg.Wait()
+		})
+	}
+}
+
+func waitNodeStatus(t *testing.T, r *repo.Repository, nodeID int64, expectedStatus int) {
+	t.Helper()
+	deadline := time.Now().Add(2 * time.Second)
+	for {
+		status, err := tryQueryInt(t, r, `SELECT status FROM node WHERE id = ?`, nodeID)
+		if err == nil && status == expectedStatus {
+			return
+		}
+		if time.Now().After(deadline) {
+			t.Fatalf("node %d status did not reach %d before timeout", nodeID, expectedStatus)
+		}
+		time.Sleep(20 * time.Millisecond)
+	}
+}
+
+func TestFederationRuntimeCommandPortRangeEnforcement(t *testing.T) {
+	providerSecret := "provider-portrange-jwt"
+	providerRouter, providerRepo := setupContractRouter(t, providerSecret)
+	providerServer := httptest.NewServer(providerRouter)
+	defer providerServer.Close()
+
+	now := time.Now().UnixMilli()
+	providerNodeID := insertContractNode(t, providerRepo, "provider-portrange-node", "198.51.100.50", "44000-44010", "provider-portrange-secret", 1)
+
+	insertPeerShare(t, providerRepo, &repo.PeerShare{
+		Name:           "portrange-share",
+		NodeID:         providerNodeID,
+		Token:          "share-portrange-token",
+		PortRangeStart: 44000,
+		PortRangeEnd:   44010,
+		IsActive:       1,
+		CreatedTime:    now,
+		UpdatedTime:    now,
+	})
+
+	stopNode := startMockNodeSession(t, providerServer.URL, "provider-portrange-secret")
+	defer stopNode()
+
+	sendCommand := func(token string, cmdType string, data interface{}) *httptest.ResponseRecorder {
+		payload := map[string]interface{}{
+			"commandType": cmdType,
+			"data":        data,
+		}
+		body, err := json.Marshal(payload)
+		if err != nil {
+			t.Fatalf("marshal command payload: %v", err)
+		}
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/federation/runtime/command", bytes.NewReader(body))
+		req.Header.Set("Authorization", "Bearer "+token)
+		req.Header.Set("Content-Type", "application/json")
+		res := httptest.NewRecorder()
+		providerRouter.ServeHTTP(res, req)
+		return res
+	}
+
+	// Test: AddService with port OUTSIDE allowed range should be rejected
+	outOfRangeData := map[string]interface{}{
+		"services": []map[string]interface{}{
+			{
+				"name": "test_service_tcp",
+				"addr": "[::]:55555",
+				"handler": map[string]interface{}{
+					"type": "tcp",
+				},
+				"listener": map[string]interface{}{
+					"type": "tcp",
+				},
+			},
+		},
+	}
+	res := sendCommand("share-portrange-token", "AddService", outOfRangeData)
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code != 403 {
+		t.Fatalf("expected code 403 for out-of-range port, got %d (msg: %s)", out.Code, out.Msg)
+	}
+
+	// Test: UpdateService with port OUTSIDE allowed range should be rejected
+	res = sendCommand("share-portrange-token", "UpdateService", outOfRangeData)
+	out = response.R{}
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code != 403 {
+		t.Fatalf("expected code 403 for out-of-range UpdateService, got %d (msg: %s)", out.Code, out.Msg)
+	}
+
+	// Test: AddService with port INSIDE allowed range should succeed
+	inRangeData := map[string]interface{}{
+		"services": []map[string]interface{}{
+			{
+				"name": "test_service_ok_tcp",
+				"addr": "[::]:44005",
+				"handler": map[string]interface{}{
+					"type": "tcp",
+				},
+				"listener": map[string]interface{}{
+					"type": "tcp",
+				},
+			},
+		},
+	}
+	res = sendCommand("share-portrange-token", "AddService", inRangeData)
+	out = response.R{}
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code != 0 {
+		t.Fatalf("expected code 0 for in-range port, got %d (msg: %s)", out.Code, out.Msg)
+	}
+
+	// Test: Non-service commands should pass through without port validation
+	res = sendCommand("share-portrange-token", "UpdateLimiters", map[string]interface{}{
+		"limiter": "federation-limit-test",
+		"data": map[string]interface{}{
+			"name":   "federation-limit-test",
+			"limits": []string{"$ 1MB 1MB"},
+		},
+	})
+	out = response.R{}
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code != 0 {
+		t.Fatalf("expected code 0 for UpdateLimiters command, got %d (msg: %s)", out.Code, out.Msg)
+	}
+
+	res = sendCommand("share-portrange-token", "reload", nil)
+	out = response.R{}
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code != 0 {
+		t.Fatalf("expected code 0 for reload command, got %d (msg: %s)", out.Code, out.Msg)
+	}
+}

go-backend/tests/contract/federation_forward_flow_linkage_contract_test.go

@@ -0,0 +1,693 @@
+package contract_test
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"strconv"
+	"strings"
+	"testing"
+	"time"
+
+	"go-backend/internal/auth"
+	"go-backend/internal/http/response"
+	"go-backend/internal/store/repo"
+)
+
+func TestFederationForwardCardFlowLinkageContract(t *testing.T) {
+	secret := "federation-forward-flow-contract-jwt"
+	router, r := setupContractRouter(t, secret)
+
+	adminToken, err := auth.GenerateToken(1, "admin_user", 0, secret)
+	if err != nil {
+		t.Fatalf("generate admin token: %v", err)
+	}
+
+	now := time.Now().UnixMilli()
+
+	if err := r.DB().Exec(`
+		INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx, is_remote, remote_url, remote_token, remote_config)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "flow-local-node", "flow-local-secret", "10.20.30.40", "10.20.30.40", "", "32000-32020", "", "v1", 1, 1, 1, now, now, 1, "[::]", "[::]", 0, 0, "", "", "").Error; err != nil {
+		t.Fatalf("insert local node: %v", err)
+	}
+	nodeID := mustLastInsertID(t, r, "flow-local-node")
+
+	shareToken := "flow-linkage-share-token"
+	if err := r.CreatePeerShare(&repo.PeerShare{
+		Name:           "flow-linkage-share",
+		NodeID:         nodeID,
+		Token:          shareToken,
+		MaxBandwidth:   0,
+		CurrentFlow:    1536,
+		ExpiryTime:     0,
+		PortRangeStart: 32000,
+		PortRangeEnd:   32020,
+		IsActive:       1,
+		CreatedTime:    now,
+		UpdatedTime:    now,
+	}); err != nil {
+		t.Fatalf("create share: %v", err)
+	}
+	share, err := r.GetPeerShareByToken(shareToken)
+	if err != nil || share == nil {
+		t.Fatalf("load share: %v", err)
+	}
+
+	tunnelName := fmt.Sprintf("Share-%d-Port-%d", share.ID, 32001)
+	if err := r.DB().Exec(`
+		INSERT INTO tunnel(name, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, tunnelName, 1, "tcp", 1, now, now, 1, "", 0).Error; err != nil {
+		t.Fatalf("insert share tunnel: %v", err)
+	}
+	tunnelID := mustLastInsertID(t, r, "flow-share-tunnel")
+
+	if err := r.DB().Exec(`
+		INSERT INTO forward(user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, 1, "admin_user", "flow-linkage-forward", tunnelID, "1.1.1.1:443", "fifo", 0, 0, now, now, 1, 0).Error; err != nil {
+		t.Fatalf("insert forward: %v", err)
+	}
+	forwardID := mustLastInsertID(t, r, "flow-linkage-forward")
+
+	if err := r.DB().Exec(`INSERT INTO forward_port(forward_id, node_id, port) VALUES(?, ?, ?)`, forwardID, nodeID, 32001).Error; err != nil {
+		t.Fatalf("insert forward_port: %v", err)
+	}
+
+	forwardOut := requestContractEnvelope(t, router, adminToken, "/api/v1/forward/list", nil)
+	if forwardOut.Code != 0 {
+		t.Fatalf("forward list failed: code=%d msg=%q", forwardOut.Code, forwardOut.Msg)
+	}
+	forwardRows := mustContractSlice(t, forwardOut.Data, "forward list data")
+
+	var targetForward map[string]interface{}
+	for _, row := range forwardRows {
+		m, ok := row.(map[string]interface{})
+		if !ok {
+			continue
+		}
+		if contractValueAsInt64(m["id"]) == forwardID {
+			targetForward = m
+			break
+		}
+	}
+	if targetForward == nil {
+		t.Fatalf("target forward %d not found in /forward/list response", forwardID)
+	}
+
+	shareOut := requestContractEnvelope(t, router, adminToken, "/api/v1/federation/share/list", nil)
+	if shareOut.Code != 0 {
+		t.Fatalf("share list failed: code=%d msg=%q", shareOut.Code, shareOut.Msg)
+	}
+	localShareRows := mustContractSlice(t, shareOut.Data, "share list data")
+
+	remoteUsageOut := requestContractEnvelope(t, router, adminToken, "/api/v1/federation/share/remote-usage/list", nil)
+	if remoteUsageOut.Code != 0 {
+		t.Fatalf("remote usage list failed: code=%d msg=%q", remoteUsageOut.Code, remoteUsageOut.Msg)
+	}
+	remoteUsageRows := mustContractSlice(t, remoteUsageOut.Data, "remote usage data")
+	if len(remoteUsageRows) != 0 {
+		t.Fatalf("expected no remote usage rows in local-only fixture, got %d", len(remoteUsageRows))
+	}
+
+	flowByShare := make(map[int64]int64)
+	for _, row := range remoteUsageRows {
+		m, ok := row.(map[string]interface{})
+		if !ok {
+			continue
+		}
+		shareID := contractValueAsInt64(m["shareId"])
+		currentFlow := contractValueAsInt64(m["currentFlow"])
+		if shareID > 0 && currentFlow > 0 {
+			if currentFlow > flowByShare[shareID] {
+				flowByShare[shareID] = currentFlow
+			}
+		}
+	}
+	for _, row := range localShareRows {
+		m, ok := row.(map[string]interface{})
+		if !ok {
+			continue
+		}
+		shareID := contractValueAsInt64(m["id"])
+		currentFlow := contractValueAsInt64(m["currentFlow"])
+		if shareID > 0 && currentFlow > 0 {
+			if currentFlow > flowByShare[shareID] {
+				flowByShare[shareID] = currentFlow
+			}
+		}
+	}
+
+	parsedShareID := contractParseShareIDFromTunnelName(contractValueAsString(targetForward["tunnelName"]))
+	if parsedShareID != share.ID {
+		t.Fatalf("expected parsed shareID=%d, got %d (tunnelName=%q)", share.ID, parsedShareID, contractValueAsString(targetForward["tunnelName"]))
+	}
+
+	forwardCountByShare := make(map[int64]int)
+	for _, row := range forwardRows {
+		m, ok := row.(map[string]interface{})
+		if !ok {
+			continue
+		}
+		sid := contractParseShareIDFromTunnelName(contractValueAsString(m["tunnelName"]))
+		if sid > 0 && flowByShare[sid] > 0 {
+			forwardCountByShare[sid] = forwardCountByShare[sid] + 1
+		}
+	}
+
+	directFlow := contractValueAsInt64(targetForward["inFlow"]) + contractValueAsInt64(targetForward["outFlow"])
+	if directFlow != 0 {
+		t.Fatalf("fixture expectation failed: directFlow should be 0, got %d", directFlow)
+	}
+
+	shareFlow := flowByShare[parsedShareID]
+	if shareFlow <= 0 {
+		t.Fatalf("expected merged share flow > 0 for share %d", parsedShareID)
+	}
+
+	count := forwardCountByShare[parsedShareID]
+	if count <= 0 {
+		count = 1
+	}
+	estimated := shareFlow / int64(count)
+	if estimated < 1 {
+		estimated = 1
+	}
+	displayFlow := estimated
+
+	if displayFlow <= 0 {
+		t.Fatalf("expected displayFlow > 0 after frontend-style merge, got %d", displayFlow)
+	}
+	if displayFlow != share.CurrentFlow {
+		t.Fatalf("expected displayFlow=%d, got %d", share.CurrentFlow, displayFlow)
+	}
+}
+
+func TestFederationForwardCardFlowLinkageContractSplitShareFlowAcrossMultipleForwards(t *testing.T) {
+	secret := "federation-forward-split-flow-contract-jwt"
+	router, r := setupContractRouter(t, secret)
+
+	adminToken, err := auth.GenerateToken(1, "admin_user", 0, secret)
+	if err != nil {
+		t.Fatalf("generate admin token: %v", err)
+	}
+
+	now := time.Now().UnixMilli()
+
+	if err := r.DB().Exec(`
+		INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx, is_remote, remote_url, remote_token, remote_config)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "flow-split-local-node", "flow-split-local-secret", "10.21.31.41", "10.21.31.41", "", "32100-32120", "", "v1", 1, 1, 1, now, now, 1, "[::]", "[::]", 0, 0, "", "", "").Error; err != nil {
+		t.Fatalf("insert local node: %v", err)
+	}
+	nodeID := mustLastInsertID(t, r, "flow-split-local-node")
+
+	shareToken := "flow-split-share-token"
+	if err := r.CreatePeerShare(&repo.PeerShare{
+		Name:           "flow-split-share",
+		NodeID:         nodeID,
+		Token:          shareToken,
+		MaxBandwidth:   0,
+		CurrentFlow:    4097,
+		ExpiryTime:     0,
+		PortRangeStart: 32100,
+		PortRangeEnd:   32120,
+		IsActive:       1,
+		CreatedTime:    now,
+		UpdatedTime:    now,
+	}); err != nil {
+		t.Fatalf("create share: %v", err)
+	}
+	share, err := r.GetPeerShareByToken(shareToken)
+	if err != nil || share == nil {
+		t.Fatalf("load share: %v", err)
+	}
+
+	createShareForward := func(name string, port int) int64 {
+		t.Helper()
+
+		tunnelName := fmt.Sprintf("Share-%d-Port-%d", share.ID, port)
+		if err := r.DB().Exec(`
+			INSERT INTO tunnel(name, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+			VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?)
+		`, tunnelName, 1, "tcp", 1, now, now, 1, "", 0).Error; err != nil {
+			t.Fatalf("insert share tunnel: %v", err)
+		}
+		tunnelID := mustLastInsertID(t, r, "flow-split-tunnel")
+
+		if err := r.DB().Exec(`
+			INSERT INTO forward(user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+			VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+		`, 1, "admin_user", name, tunnelID, "1.1.1.1:443", "fifo", 0, 0, now, now, 1, 0).Error; err != nil {
+			t.Fatalf("insert forward: %v", err)
+		}
+		forwardID := mustLastInsertID(t, r, name)
+
+		if err := r.DB().Exec(`INSERT INTO forward_port(forward_id, node_id, port) VALUES(?, ?, ?)`, forwardID, nodeID, port).Error; err != nil {
+			t.Fatalf("insert forward_port: %v", err)
+		}
+
+		return forwardID
+	}
+
+	forwardIDA := createShareForward("flow-split-forward-a", 32101)
+	forwardIDB := createShareForward("flow-split-forward-b", 32102)
+
+	forwardOut := requestContractEnvelope(t, router, adminToken, "/api/v1/forward/list", nil)
+	if forwardOut.Code != 0 {
+		t.Fatalf("forward list failed: code=%d msg=%q", forwardOut.Code, forwardOut.Msg)
+	}
+	forwardRows := mustContractSlice(t, forwardOut.Data, "forward list data")
+
+	shareOut := requestContractEnvelope(t, router, adminToken, "/api/v1/federation/share/list", nil)
+	if shareOut.Code != 0 {
+		t.Fatalf("share list failed: code=%d msg=%q", shareOut.Code, shareOut.Msg)
+	}
+	localShareRows := mustContractSlice(t, shareOut.Data, "share list data")
+
+	remoteUsageOut := requestContractEnvelope(t, router, adminToken, "/api/v1/federation/share/remote-usage/list", nil)
+	if remoteUsageOut.Code != 0 {
+		t.Fatalf("remote usage list failed: code=%d msg=%q", remoteUsageOut.Code, remoteUsageOut.Msg)
+	}
+	remoteUsageRows := mustContractSlice(t, remoteUsageOut.Data, "remote usage data")
+	if len(remoteUsageRows) != 0 {
+		t.Fatalf("expected no remote usage rows in local-only fixture, got %d", len(remoteUsageRows))
+	}
+
+	flowByShare := make(map[int64]int64)
+	for _, row := range remoteUsageRows {
+		m, ok := row.(map[string]interface{})
+		if !ok {
+			continue
+		}
+		shareID := contractValueAsInt64(m["shareId"])
+		currentFlow := contractValueAsInt64(m["currentFlow"])
+		if shareID > 0 && currentFlow > 0 {
+			if currentFlow > flowByShare[shareID] {
+				flowByShare[shareID] = currentFlow
+			}
+		}
+	}
+	for _, row := range localShareRows {
+		m, ok := row.(map[string]interface{})
+		if !ok {
+			continue
+		}
+		shareID := contractValueAsInt64(m["id"])
+		currentFlow := contractValueAsInt64(m["currentFlow"])
+		if shareID > 0 && currentFlow > 0 {
+			if currentFlow > flowByShare[shareID] {
+				flowByShare[shareID] = currentFlow
+			}
+		}
+	}
+
+	shareFlow := flowByShare[share.ID]
+	if shareFlow <= 0 {
+		t.Fatalf("expected merged share flow > 0 for share %d", share.ID)
+	}
+
+	forwardCountByShare := make(map[int64]int)
+	for _, row := range forwardRows {
+		m, ok := row.(map[string]interface{})
+		if !ok {
+			continue
+		}
+		sid := contractParseShareIDFromTunnelName(contractValueAsString(m["tunnelName"]))
+		if sid > 0 && flowByShare[sid] > 0 {
+			forwardCountByShare[sid] = forwardCountByShare[sid] + 1
+		}
+	}
+
+	count := forwardCountByShare[share.ID]
+	if count != 2 {
+		t.Fatalf("expected 2 forwards sharing share %d, got %d", share.ID, count)
+	}
+
+	expectedEach := shareFlow / int64(count)
+	if expectedEach < 1 {
+		expectedEach = 1
+	}
+
+	findForward := func(forwardID int64) map[string]interface{} {
+		t.Helper()
+		for _, row := range forwardRows {
+			m, ok := row.(map[string]interface{})
+			if !ok {
+				continue
+			}
+			if contractValueAsInt64(m["id"]) == forwardID {
+				return m
+			}
+		}
+		t.Fatalf("forward %d not found in /forward/list response", forwardID)
+		return nil
+	}
+
+	for _, forwardID := range []int64{forwardIDA, forwardIDB} {
+		forward := findForward(forwardID)
+		sid := contractParseShareIDFromTunnelName(contractValueAsString(forward["tunnelName"]))
+		if sid != share.ID {
+			t.Fatalf("expected parsed shareID=%d, got %d for forward %d", share.ID, sid, forwardID)
+		}
+
+		directFlow := contractValueAsInt64(forward["inFlow"]) + contractValueAsInt64(forward["outFlow"])
+		if directFlow != 0 {
+			t.Fatalf("fixture expectation failed: directFlow should be 0 for forward %d, got %d", forwardID, directFlow)
+		}
+
+		displayFlow := int64(0)
+		if directFlow > 0 {
+			displayFlow = directFlow
+		} else {
+			shareFlowForForward := flowByShare[sid]
+			if shareFlowForForward > 0 {
+				cnt := forwardCountByShare[sid]
+				if cnt <= 0 {
+					cnt = 1
+				}
+				estimated := shareFlowForForward / int64(cnt)
+				if estimated < 1 {
+					estimated = 1
+				}
+				displayFlow = estimated
+			}
+		}
+
+		if displayFlow <= 0 {
+			t.Fatalf("expected displayFlow > 0 for forward %d, got %d", forwardID, displayFlow)
+		}
+		if displayFlow != expectedEach {
+			t.Fatalf("expected displayFlow=%d for forward %d, got %d", expectedEach, forwardID, displayFlow)
+		}
+	}
+}
+
+func TestFederationForwardCardFlowLinkageContractResolvesShareByTunnelBindingWhenTunnelNameIsCustom(t *testing.T) {
+	secret := "federation-forward-binding-flow-contract-jwt"
+	router, r := setupContractRouter(t, secret)
+
+	adminToken, err := auth.GenerateToken(1, "admin_user", 0, secret)
+	if err != nil {
+		t.Fatalf("generate admin token: %v", err)
+	}
+
+	now := time.Now().UnixMilli()
+	remoteShareID := int64(901)
+	remoteShareFlow := int64(5000)
+
+	if err := r.DB().Exec(`
+		INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx, is_remote, remote_url, remote_token, remote_config)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`,
+		"flow-binding-remote-node", "flow-binding-remote-secret", "10.31.41.51", "10.31.41.51", "", "33000-33020", "", "v1", 1, 1, 1, now, now, 1, "[::]", "[::]", 0, 1, "", "", fmt.Sprintf(`{"shareId":%d,"maxBandwidth":0,"currentFlow":%d,"portRangeStart":33000,"portRangeEnd":33020}`, remoteShareID, remoteShareFlow),
+	).Error; err != nil {
+		t.Fatalf("insert remote node: %v", err)
+	}
+	remoteNodeID := mustLastInsertID(t, r, "flow-binding-remote-node")
+
+	if err := r.DB().Exec(`
+		INSERT INTO tunnel(name, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "federation-port-forward-custom-name", 1, "tcp", 1, now, now, 1, "", 0).Error; err != nil {
+		t.Fatalf("insert custom tunnel: %v", err)
+	}
+	tunnelID := mustLastInsertID(t, r, "flow-binding-custom-tunnel")
+
+	if err := r.DB().Exec(`
+		INSERT INTO forward(user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, 1, "admin_user", "flow-binding-forward", tunnelID, "1.1.1.1:443", "fifo", 0, 0, now, now, 1, 0).Error; err != nil {
+		t.Fatalf("insert forward: %v", err)
+	}
+	forwardID := mustLastInsertID(t, r, "flow-binding-forward")
+
+	if err := r.DB().Exec(`INSERT INTO forward_port(forward_id, node_id, port) VALUES(?, ?, ?)`, forwardID, remoteNodeID, 33001).Error; err != nil {
+		t.Fatalf("insert forward_port: %v", err)
+	}
+
+	forwardOut := requestContractEnvelope(t, router, adminToken, "/api/v1/forward/list", nil)
+	if forwardOut.Code != 0 {
+		t.Fatalf("forward list failed: code=%d msg=%q", forwardOut.Code, forwardOut.Msg)
+	}
+	forwardRows := mustContractSlice(t, forwardOut.Data, "forward list data")
+
+	shareOut := requestContractEnvelope(t, router, adminToken, "/api/v1/federation/share/list", nil)
+	if shareOut.Code != 0 {
+		t.Fatalf("share list failed: code=%d msg=%q", shareOut.Code, shareOut.Msg)
+	}
+	localShareRows := mustContractSlice(t, shareOut.Data, "share list data")
+
+	remoteUsageOut := requestContractEnvelope(t, router, adminToken, "/api/v1/federation/share/remote-usage/list", nil)
+	if remoteUsageOut.Code != 0 {
+		t.Fatalf("remote usage list failed: code=%d msg=%q", remoteUsageOut.Code, remoteUsageOut.Msg)
+	}
+	remoteUsageRows := mustContractSlice(t, remoteUsageOut.Data, "remote usage data")
+	if len(remoteUsageRows) == 0 {
+		t.Fatalf("expected non-empty remote usage rows")
+	}
+
+	findForward := func(id int64) map[string]interface{} {
+		t.Helper()
+		for _, row := range forwardRows {
+			m, ok := row.(map[string]interface{})
+			if !ok {
+				continue
+			}
+			if contractValueAsInt64(m["id"]) == id {
+				return m
+			}
+		}
+		t.Fatalf("forward %d not found in /forward/list response", id)
+		return nil
+	}
+
+	flowByShare := make(map[int64]int64)
+	shareIDsByTunnel := make(map[int64]map[int64]struct{})
+
+	for _, row := range remoteUsageRows {
+		m, ok := row.(map[string]interface{})
+		if !ok {
+			continue
+		}
+		shareID := contractValueAsInt64(m["shareId"])
+		currentFlow := contractValueAsInt64(m["currentFlow"])
+		if shareID > 0 && currentFlow > 0 {
+			if currentFlow > flowByShare[shareID] {
+				flowByShare[shareID] = currentFlow
+			}
+		}
+
+		bindings, _ := m["bindings"].([]interface{})
+		for _, bindingRaw := range bindings {
+			binding, ok := bindingRaw.(map[string]interface{})
+			if !ok {
+				continue
+			}
+			tunnelIDVal := contractValueAsInt64(binding["tunnelId"])
+			chainType := contractValueAsInt64(binding["chainType"])
+			if shareID <= 0 || tunnelIDVal <= 0 {
+				continue
+			}
+			if chainType != 1 {
+				continue
+			}
+			setByTunnel, ok := shareIDsByTunnel[tunnelIDVal]
+			if !ok {
+				setByTunnel = make(map[int64]struct{})
+				shareIDsByTunnel[tunnelIDVal] = setByTunnel
+			}
+			setByTunnel[shareID] = struct{}{}
+		}
+	}
+
+	for _, row := range localShareRows {
+		m, ok := row.(map[string]interface{})
+		if !ok {
+			continue
+		}
+		shareID := contractValueAsInt64(m["id"])
+		currentFlow := contractValueAsInt64(m["currentFlow"])
+		if shareID > 0 && currentFlow > 0 {
+			if currentFlow > flowByShare[shareID] {
+				flowByShare[shareID] = currentFlow
+			}
+		}
+	}
+
+	targetForward := findForward(forwardID)
+	parsedByName := contractParseShareIDFromTunnelName(contractValueAsString(targetForward["tunnelName"]))
+	if parsedByName != 0 {
+		t.Fatalf("expected custom tunnel name cannot be parsed as Share-*-Port-*, got %d", parsedByName)
+	}
+
+	resolveShareIDForForward := func(forward map[string]interface{}) int64 {
+		candidates := make(map[int64]struct{})
+
+		shareIDFromName := contractParseShareIDFromTunnelName(contractValueAsString(forward["tunnelName"]))
+		if shareIDFromName > 0 {
+			candidates[shareIDFromName] = struct{}{}
+		}
+
+		tunnelIDVal := contractValueAsInt64(forward["tunnelId"])
+		if setByTunnel, ok := shareIDsByTunnel[tunnelIDVal]; ok {
+			for sid := range setByTunnel {
+				candidates[sid] = struct{}{}
+			}
+		}
+
+		var bestShareID int64
+		bestFlow := int64(0)
+		for sid := range candidates {
+			flow := flowByShare[sid]
+			if flow > bestFlow {
+				bestFlow = flow
+				bestShareID = sid
+			}
+		}
+		return bestShareID
+	}
+
+	resolvedShareID := resolveShareIDForForward(targetForward)
+	if resolvedShareID != remoteShareID {
+		t.Fatalf("expected resolved shareID=%d via tunnel binding, got %d", remoteShareID, resolvedShareID)
+	}
+
+	forwardCountByShare := make(map[int64]int)
+	resolvedByForwardID := make(map[int64]int64)
+	for _, row := range forwardRows {
+		m, ok := row.(map[string]interface{})
+		if !ok {
+			continue
+		}
+		fid := contractValueAsInt64(m["id"])
+		sid := resolveShareIDForForward(m)
+		if sid > 0 {
+			resolvedByForwardID[fid] = sid
+		}
+		if sid > 0 && flowByShare[sid] > 0 {
+			forwardCountByShare[sid] = forwardCountByShare[sid] + 1
+		}
+	}
+
+	directFlow := contractValueAsInt64(targetForward["inFlow"]) + contractValueAsInt64(targetForward["outFlow"])
+	if directFlow != 0 {
+		t.Fatalf("fixture expectation failed: directFlow should be 0, got %d", directFlow)
+	}
+
+	shareFlow := flowByShare[resolvedByForwardID[forwardID]]
+	if shareFlow <= 0 {
+		t.Fatalf("expected merged share flow > 0 for resolved share %d", resolvedByForwardID[forwardID])
+	}
+
+	count := forwardCountByShare[resolvedByForwardID[forwardID]]
+	if count <= 0 {
+		count = 1
+	}
+	estimated := shareFlow / int64(count)
+	if estimated < 1 {
+		estimated = 1
+	}
+
+	displayFlow := estimated
+	if displayFlow <= 0 {
+		t.Fatalf("expected displayFlow > 0 after tunnel-binding-based merge, got %d", displayFlow)
+	}
+	if displayFlow != remoteShareFlow {
+		t.Fatalf("expected displayFlow=%d, got %d", remoteShareFlow, displayFlow)
+	}
+}
+
+func requestContractEnvelope(t *testing.T, router http.Handler, token string, path string, body interface{}) response.R {
+	t.Helper()
+
+	payload := []byte("{}")
+	if body != nil {
+		raw, err := json.Marshal(body)
+		if err != nil {
+			t.Fatalf("marshal request body for %s: %v", path, err)
+		}
+		payload = raw
+	}
+
+	req := httptest.NewRequest(http.MethodPost, path, bytes.NewReader(payload))
+	req.Header.Set("Authorization", token)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+	router.ServeHTTP(res, req)
+
+	if res.Code != http.StatusOK {
+		t.Fatalf("expected http 200 for %s, got %d", path, res.Code)
+	}
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response for %s: %v", path, err)
+	}
+
+	return out
+}
+
+func mustContractSlice(t *testing.T, data interface{}, label string) []interface{} {
+	t.Helper()
+
+	rows, ok := data.([]interface{})
+	if !ok {
+		t.Fatalf("expected %s to be []interface{}, got %T", label, data)
+	}
+	return rows
+}
+
+func contractParseShareIDFromTunnelName(tunnelName string) int64 {
+	normalized := strings.TrimSpace(tunnelName)
+	if !strings.HasPrefix(normalized, "Share-") {
+		return 0
+	}
+	raw := strings.TrimPrefix(normalized, "Share-")
+	idx := strings.Index(raw, "-Port-")
+	if idx <= 0 {
+		return 0
+	}
+	shareID, err := strconv.ParseInt(strings.TrimSpace(raw[:idx]), 10, 64)
+	if err != nil || shareID <= 0 {
+		return 0
+	}
+	return shareID
+}
+
+func contractValueAsInt64(v interface{}) int64 {
+	switch n := v.(type) {
+	case int64:
+		return n
+	case int:
+		return int64(n)
+	case float64:
+		return int64(n)
+	case json.Number:
+		i, err := n.Int64()
+		if err == nil {
+			return i
+		}
+		f, err := n.Float64()
+		if err == nil {
+			return int64(f)
+		}
+		return 0
+	case string:
+		i, err := strconv.ParseInt(strings.TrimSpace(n), 10, 64)
+		if err == nil {
+			return i
+		}
+		return 0
+	default:
+		return 0
+	}
+}
+
+func contractValueAsString(v interface{}) string {
+	s, _ := v.(string)
+	return s
+}

go-backend/tests/contract/flow_contract_test.go

@@ -0,0 +1,44 @@
+package contract_test
+
+import (
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"go-backend/internal/http/handler"
+)
+
+func TestFlowEndpointsStringResponses(t *testing.T) {
+	h := handler.New(nil, "secret")
+	mux := http.NewServeMux()
+	h.Register(mux)
+
+	tests := []struct {
+		name     string
+		method   string
+		path     string
+		expected string
+	}{
+		{name: "flow test", method: http.MethodGet, path: "/flow/test", expected: "test"},
+		{name: "flow config", method: http.MethodPost, path: "/flow/config?secret=abc", expected: "ok"},
+		{name: "flow upload", method: http.MethodPost, path: "/flow/upload?secret=abc", expected: "ok"},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			req := httptest.NewRequest(tc.method, tc.path, nil)
+			res := httptest.NewRecorder()
+			mux.ServeHTTP(res, req)
+
+			body, err := io.ReadAll(res.Body)
+			if err != nil {
+				t.Fatalf("read body: %v", err)
+			}
+
+			if string(body) != tc.expected {
+				t.Fatalf("expected %q, got %q", tc.expected, string(body))
+			}
+		})
+	}
+}

go-backend/tests/contract/flow_limit_forward_enable_contract_test.go

@@ -0,0 +1,201 @@
+package contract_test
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+	"time"
+
+	"go-backend/internal/auth"
+	"go-backend/internal/http/response"
+)
+
+const contractBytesPerGB int64 = 1024 * 1024 * 1024
+
+func TestForwardResumeBlockedWhenUserFlowExceeded(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	userID := int64(2)
+	tunnelID := int64(1)
+	forwardID := int64(1)
+
+	flowGB := int64(120)
+	used := flowGB*contractBytesPerGB + 1
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(?, 'flow_user', 'pwd', 1, 2727251700000, ?, ?, 0, 1, 99999, ?, ?, 1)
+	`, userID, flowGB, used, now, now).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(id, name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, 'flow_tunnel', 1.0, 1, 'tls', 99999, ?, ?, 1, NULL, 0)
+	`, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(10, ?, ?, NULL, 99999, 99999, 0, 0, 1, 2727251700000, 1)
+	`, userID, tunnelID).Error; err != nil {
+		t.Fatalf("insert user_tunnel: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO forward(id, user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(?, ?, 'flow_user', 'flow_forward', ?, '8.8.8.8:53', 'fifo', 0, 0, ?, ?, 0, 0)
+	`, forwardID, userID, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert forward: %v", err)
+	}
+
+	token, err := auth.GenerateToken(userID, "flow_user", 1, secret)
+	if err != nil {
+		t.Fatalf("generate token: %v", err)
+	}
+
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/resume", bytes.NewBufferString(`{"id":1}`))
+	req.Header.Set("Authorization", token)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+
+	router.ServeHTTP(res, req)
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code == 0 {
+		t.Fatalf("expected non-zero code when flow exceeded")
+	}
+	if !strings.Contains(out.Msg, "流量") {
+		t.Fatalf("expected flow exceeded message, got %q", out.Msg)
+	}
+
+	status := mustQueryInt(t, repo, `SELECT status FROM forward WHERE id = ?`, forwardID)
+	if status != 0 {
+		t.Fatalf("expected forward status to remain 0, got %d", status)
+	}
+}
+
+func TestForwardResumeBlockedWhenUserTunnelFlowExceeded(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	userID := int64(2)
+	tunnelID := int64(1)
+	forwardID := int64(1)
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(?, 'ut_flow_user', 'pwd', 1, 2727251700000, 99999, 0, 0, 1, 99999, ?, ?, 1)
+	`, userID, now, now).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(id, name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, 'ut_flow_tunnel', 1.0, 1, 'tls', 99999, ?, ?, 1, NULL, 0)
+	`, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+
+	utFlowGB := int64(120)
+	utUsed := utFlowGB * contractBytesPerGB
+	if err := repo.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(10, ?, ?, NULL, 99999, ?, ?, 0, 1, 2727251700000, 1)
+	`, userID, tunnelID, utFlowGB, utUsed).Error; err != nil {
+		t.Fatalf("insert user_tunnel: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO forward(id, user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(?, ?, 'ut_flow_user', 'ut_flow_forward', ?, '8.8.8.8:53', 'fifo', 0, 0, ?, ?, 0, 0)
+	`, forwardID, userID, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert forward: %v", err)
+	}
+
+	token, err := auth.GenerateToken(userID, "ut_flow_user", 1, secret)
+	if err != nil {
+		t.Fatalf("generate token: %v", err)
+	}
+
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/resume", bytes.NewBufferString(`{"id":1}`))
+	req.Header.Set("Authorization", token)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+
+	router.ServeHTTP(res, req)
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code == 0 {
+		t.Fatalf("expected non-zero code when tunnel flow exceeded")
+	}
+	if !strings.Contains(out.Msg, "隧道") || !strings.Contains(out.Msg, "流量") {
+		t.Fatalf("expected tunnel flow exceeded message, got %q", out.Msg)
+	}
+}
+
+func TestForwardCreateBlockedWhenFlowExceeded(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	userID := int64(2)
+	tunnelID := int64(1)
+
+	flowGB := int64(120)
+	used := flowGB*contractBytesPerGB + 1
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(?, 'create_flow_user', 'pwd', 1, 2727251700000, ?, ?, 0, 1, 99999, ?, ?, 1)
+	`, userID, flowGB, used, now, now).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(id, name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, 'create_flow_tunnel', 1.0, 1, 'tls', 99999, ?, ?, 1, NULL, 0)
+	`, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(10, ?, ?, NULL, 99999, 99999, 0, 0, 1, 2727251700000, 1)
+	`, userID, tunnelID).Error; err != nil {
+		t.Fatalf("insert user_tunnel: %v", err)
+	}
+
+	token, err := auth.GenerateToken(userID, "create_flow_user", 1, secret)
+	if err != nil {
+		t.Fatalf("generate token: %v", err)
+	}
+
+	payload := `{"tunnelId":1,"name":"n","remoteAddr":"1.1.1.1:53"}`
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/create", bytes.NewBufferString(payload))
+	req.Header.Set("Authorization", token)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+
+	router.ServeHTTP(res, req)
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code == 0 {
+		t.Fatalf("expected non-zero code when flow exceeded")
+	}
+	if !strings.Contains(out.Msg, "流量") {
+		t.Fatalf("expected flow exceeded message, got %q", out.Msg)
+	}
+}

go-backend/tests/contract/forward_count_limit_contract_test.go

@@ -0,0 +1,346 @@
+package contract_test
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+	"time"
+
+	"go-backend/internal/auth"
+	"go-backend/internal/http/response"
+)
+
+func TestForwardCreateBlockedWhenUserNumLimitExceeded(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	userID := int64(100)
+	tunnelID := int64(1)
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(?, 'num_limit_user', 'pwd', 1, 2727251700000, 99999, 0, 0, 1, 2, ?, ?, 1)
+	`, userID, now, now).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(id, name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, 'num_limit_tunnel', 1.0, 1, 'tls', 99999, ?, ?, 1, NULL, 0)
+	`, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(10, ?, ?, NULL, 99999, 99999, 0, 0, 1, 2727251700000, 1)
+	`, userID, tunnelID).Error; err != nil {
+		t.Fatalf("insert user_tunnel: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO forward(id, user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(1, ?, 'num_limit_user', 'existing_forward_1', ?, '8.8.8.8:53', 'fifo', 0, 0, ?, ?, 1, 0)
+	`, userID, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert existing forward 1: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO forward(id, user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(2, ?, 'num_limit_user', 'existing_forward_2', ?, '8.8.4.4:53', 'fifo', 0, 0, ?, ?, 1, 0)
+	`, userID, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert existing forward 2: %v", err)
+	}
+
+	token, err := auth.GenerateToken(userID, "num_limit_user", 1, secret)
+	if err != nil {
+		t.Fatalf("generate token: %v", err)
+	}
+
+	payload := `{"tunnelId":1,"name":"new_forward","remoteAddr":"1.1.1.1:53"}`
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/create", bytes.NewBufferString(payload))
+	req.Header.Set("Authorization", token)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+
+	router.ServeHTTP(res, req)
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code == 0 {
+		t.Fatalf("expected non-zero code when num limit exceeded, got code=%d msg=%q", out.Code, out.Msg)
+	}
+	if !strings.Contains(out.Msg, "转发数量已达上限") {
+		t.Fatalf("expected forward count limit message, got %q", out.Msg)
+	}
+}
+
+func TestForwardResumeBlockedWhenUserNumLimitExceeded(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	userID := int64(101)
+	tunnelID := int64(1)
+	pausedForwardID := int64(3)
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(?, 'num_resume_user', 'pwd', 1, 2727251700000, 99999, 0, 0, 1, 2, ?, ?, 1)
+	`, userID, now, now).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(id, name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, 'num_resume_tunnel', 1.0, 1, 'tls', 99999, ?, ?, 1, NULL, 0)
+	`, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(10, ?, ?, NULL, 99999, 99999, 0, 0, 1, 2727251700000, 1)
+	`, userID, tunnelID).Error; err != nil {
+		t.Fatalf("insert user_tunnel: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO forward(id, user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(1, ?, 'num_resume_user', 'existing_forward_1', ?, '8.8.8.8:53', 'fifo', 0, 0, ?, ?, 1, 0)
+	`, userID, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert existing forward 1: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO forward(id, user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(2, ?, 'num_resume_user', 'existing_forward_2', ?, '8.8.4.4:53', 'fifo', 0, 0, ?, ?, 1, 0)
+	`, userID, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert existing forward 2: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO forward(id, user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(?, ?, 'num_resume_user', 'paused_forward', ?, '1.1.1.1:53', 'fifo', 0, 0, ?, ?, 0, 0)
+	`, pausedForwardID, userID, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert paused forward: %v", err)
+	}
+
+	token, err := auth.GenerateToken(userID, "num_resume_user", 1, secret)
+	if err != nil {
+		t.Fatalf("generate token: %v", err)
+	}
+
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/resume", bytes.NewBufferString(`{"id":3}`))
+	req.Header.Set("Authorization", token)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+
+	router.ServeHTTP(res, req)
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code == 0 {
+		t.Fatalf("expected non-zero code when num limit exceeded, got code=%d msg=%q", out.Code, out.Msg)
+	}
+	if !strings.Contains(out.Msg, "转发数量已达上限") {
+		t.Fatalf("expected forward count limit message, got %q", out.Msg)
+	}
+
+	status := mustQueryInt(t, repo, `SELECT status FROM forward WHERE id = ?`, pausedForwardID)
+	if status != 0 {
+		t.Fatalf("expected forward status to remain 0, got %d", status)
+	}
+}
+
+func TestForwardCreateBlockedWhenUserTunnelNumLimitExceeded(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	userID := int64(102)
+	tunnelID := int64(1)
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(?, 'ut_num_limit_user', 'pwd', 1, 2727251700000, 99999, 0, 0, 1, 99999, ?, ?, 1)
+	`, userID, now, now).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(id, name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, 'ut_num_limit_tunnel', 1.0, 1, 'tls', 99999, ?, ?, 1, NULL, 0)
+	`, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(10, ?, ?, NULL, 1, 99999, 0, 0, 1, 2727251700000, 1)
+	`, userID, tunnelID).Error; err != nil {
+		t.Fatalf("insert user_tunnel with num=1: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO forward(id, user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(1, ?, 'ut_num_limit_user', 'existing_tunnel_forward', ?, '8.8.8.8:53', 'fifo', 0, 0, ?, ?, 1, 0)
+	`, userID, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert existing forward: %v", err)
+	}
+
+	token, err := auth.GenerateToken(userID, "ut_num_limit_user", 1, secret)
+	if err != nil {
+		t.Fatalf("generate token: %v", err)
+	}
+
+	payload := `{"tunnelId":1,"name":"new_tunnel_forward","remoteAddr":"1.1.1.1:53"}`
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/create", bytes.NewBufferString(payload))
+	req.Header.Set("Authorization", token)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+
+	router.ServeHTTP(res, req)
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code == 0 {
+		t.Fatalf("expected non-zero code when user_tunnel num limit exceeded, got code=%d msg=%q", out.Code, out.Msg)
+	}
+	if !strings.Contains(out.Msg, "隧道转发数量已达上限") {
+		t.Fatalf("expected tunnel forward count limit message, got %q", out.Msg)
+	}
+}
+
+func TestForwardCreateAllowedWhenBelowUserNumLimit(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	userID := int64(103)
+	tunnelID := int64(1)
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(?, 'num_ok_user', 'pwd', 1, 2727251700000, 99999, 0, 0, 1, 3, ?, ?, 1)
+	`, userID, now, now).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(id, name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, 'num_ok_tunnel', 1.0, 1, 'tls', 99999, ?, ?, 1, NULL, 0)
+	`, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(10, ?, ?, NULL, 99999, 99999, 0, 0, 1, 2727251700000, 1)
+	`, userID, tunnelID).Error; err != nil {
+		t.Fatalf("insert user_tunnel: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO forward(id, user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(1, ?, 'num_ok_user', 'existing_forward_1', ?, '8.8.8.8:53', 'fifo', 0, 0, ?, ?, 1, 0)
+	`, userID, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert existing forward 1: %v", err)
+	}
+
+	token, err := auth.GenerateToken(userID, "num_ok_user", 1, secret)
+	if err != nil {
+		t.Fatalf("generate token: %v", err)
+	}
+
+	payload := `{"tunnelId":1,"name":"new_forward_ok","remoteAddr":"1.1.1.1:53"}`
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/create", bytes.NewBufferString(payload))
+	req.Header.Set("Authorization", token)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+
+	router.ServeHTTP(res, req)
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code != 0 {
+		t.Fatalf("expected success (code=0) when below num limit, got code=%d msg=%q", out.Code, out.Msg)
+	}
+}
+
+func TestForwardCreateAllowedWhenNumZero(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	userID := int64(104)
+	tunnelID := int64(1)
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(?, 'num_zero_user', 'pwd', 1, 2727251700000, 99999, 0, 0, 1, 0, ?, ?, 1)
+	`, userID, now, now).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(id, name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, 'num_zero_tunnel', 1.0, 1, 'tls', 99999, ?, ?, 1, NULL, 0)
+	`, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(10, ?, ?, NULL, 0, 99999, 0, 0, 1, 2727251700000, 1)
+	`, userID, tunnelID).Error; err != nil {
+		t.Fatalf("insert user_tunnel with num=0: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO forward(id, user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(1, ?, 'num_zero_user', 'existing_forward_1', ?, '8.8.8.8:53', 'fifo', 0, 0, ?, ?, 1, 0)
+	`, userID, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert existing forward 1: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO forward(id, user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(2, ?, 'num_zero_user', 'existing_forward_2', ?, '8.8.4.4:53', 'fifo', 0, 0, ?, ?, 1, 0)
+	`, userID, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert existing forward 2: %v", err)
+	}
+
+	token, err := auth.GenerateToken(userID, "num_zero_user", 1, secret)
+	if err != nil {
+		t.Fatalf("generate token: %v", err)
+	}
+
+	payload := `{"tunnelId":1,"name":"new_forward_zero","remoteAddr":"1.1.1.1:53"}`
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/create", bytes.NewBufferString(payload))
+	req.Header.Set("Authorization", token)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+
+	router.ServeHTTP(res, req)
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code != 0 {
+		t.Fatalf("expected success (code=0) when num=0 (unlimited), got code=%d msg=%q", out.Code, out.Msg)
+	}
+}

go-backend/tests/contract/group_permission_contract_test.go

@@ -0,0 +1,167 @@
+package contract_test
+
+import (
+	"bytes"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"go-backend/internal/auth"
+)
+
+func TestGroupUserUnbindRevokesInheritedTunnelPermission(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(200, 'group_user_contract', '3c85cdebade1c51cf64ca9f3c09d182d', 1, 2727251700000, 99999, 0, 0, 1, 99999, ?, ?, 1)
+	`, now, now).Error; err != nil {
+		t.Fatalf("insert test user: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES('group-contract-tunnel', 1.0, 1, 'tls', 99999, ?, ?, 1, NULL, 0)
+	`, now, now).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	tunnelID := mustLastInsertID(t, repo, "group-contract-tunnel")
+
+	if err := repo.DB().Exec(`INSERT INTO user_group(name, created_time, updated_time, status) VALUES('ug-contract', ?, ?, 1)`, now, now).Error; err != nil {
+		t.Fatalf("insert user_group: %v", err)
+	}
+	userGroupID := mustLastInsertID(t, repo, "ug-contract")
+
+	if err := repo.DB().Exec(`INSERT INTO tunnel_group(name, created_time, updated_time, status) VALUES('tg-contract', ?, ?, 1)`, now, now).Error; err != nil {
+		t.Fatalf("insert tunnel_group: %v", err)
+	}
+	tunnelGroupID := mustLastInsertID(t, repo, "tg-contract")
+
+	if err := repo.DB().Exec(`INSERT INTO tunnel_group_tunnel(tunnel_group_id, tunnel_id, created_time) VALUES(?, ?, ?)`, tunnelGroupID, tunnelID, now).Error; err != nil {
+		t.Fatalf("insert tunnel_group_tunnel: %v", err)
+	}
+	if err := repo.DB().Exec(`INSERT INTO group_permission(user_group_id, tunnel_group_id, created_time) VALUES(?, ?, ?)`, userGroupID, tunnelGroupID, now).Error; err != nil {
+		t.Fatalf("insert group_permission: %v", err)
+	}
+
+	adminToken, err := auth.GenerateToken(1, "admin_user", 0, secret)
+	if err != nil {
+		t.Fatalf("generate admin token: %v", err)
+	}
+
+	bindReq := httptest.NewRequest(http.MethodPost, "/api/v1/group/user/assign", bytes.NewBufferString(`{"groupId":`+jsonNumber(userGroupID)+`,"userIds":[200]}`))
+	bindReq.Header.Set("Authorization", adminToken)
+	bindRes := httptest.NewRecorder()
+	router.ServeHTTP(bindRes, bindReq)
+	assertCode(t, bindRes, 0)
+
+	userTunnelID := mustQueryInt64(t, repo, `SELECT id FROM user_tunnel WHERE user_id = 200 AND tunnel_id = ?`, tunnelID)
+
+	grantCount := mustQueryInt(t, repo, `SELECT COUNT(1) FROM group_permission_grant WHERE user_tunnel_id = ?`, userTunnelID)
+	if grantCount == 0 {
+		t.Fatalf("expected non-zero grants after bind")
+	}
+
+	unbindReq := httptest.NewRequest(http.MethodPost, "/api/v1/group/user/assign", bytes.NewBufferString(`{"groupId":`+jsonNumber(userGroupID)+`,"userIds":[]}`))
+	unbindReq.Header.Set("Authorization", adminToken)
+	unbindRes := httptest.NewRecorder()
+	router.ServeHTTP(unbindRes, unbindReq)
+	assertCode(t, unbindRes, 0)
+
+	grantCount = mustQueryInt(t, repo, `SELECT COUNT(1) FROM group_permission_grant WHERE user_tunnel_id = ?`, userTunnelID)
+	if grantCount != 0 {
+		t.Fatalf("expected grants revoked after unbind, got %d", grantCount)
+	}
+
+	userTunnelCount := mustQueryInt(t, repo, `SELECT COUNT(1) FROM user_tunnel WHERE id = ?`, userTunnelID)
+	if userTunnelCount != 0 {
+		t.Fatalf("expected user_tunnel revoked after unbind, got %d", userTunnelCount)
+	}
+}
+
+func TestGroupPermissionRemoveRevokesInheritedTunnelPermission(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(201, 'group_user_permission_remove', '3c85cdebade1c51cf64ca9f3c09d182d', 1, 2727251700000, 99999, 0, 0, 1, 99999, ?, ?, 1)
+	`, now, now).Error; err != nil {
+		t.Fatalf("insert test user: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES('group-remove-tunnel', 1.0, 1, 'tls', 99999, ?, ?, 1, NULL, 0)
+	`, now, now).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	tunnelID := mustLastInsertID(t, repo, "group-remove-tunnel")
+
+	if err := repo.DB().Exec(`INSERT INTO user_group(name, created_time, updated_time, status) VALUES('ug-remove-contract', ?, ?, 1)`, now, now).Error; err != nil {
+		t.Fatalf("insert user_group: %v", err)
+	}
+	userGroupID := mustLastInsertID(t, repo, "ug-remove-contract")
+
+	if err := repo.DB().Exec(`INSERT INTO tunnel_group(name, created_time, updated_time, status) VALUES('tg-remove-contract', ?, ?, 1)`, now, now).Error; err != nil {
+		t.Fatalf("insert tunnel_group: %v", err)
+	}
+	tunnelGroupID := mustLastInsertID(t, repo, "tg-remove-contract")
+
+	adminToken, err := auth.GenerateToken(1, "admin_user", 0, secret)
+	if err != nil {
+		t.Fatalf("generate admin token: %v", err)
+	}
+
+	assignTunnelReq := httptest.NewRequest(http.MethodPost, "/api/v1/group/tunnel/assign", bytes.NewBufferString(`{"groupId":`+jsonNumber(tunnelGroupID)+`,"tunnelIds":[`+jsonNumber(tunnelID)+`]}`))
+	assignTunnelReq.Header.Set("Authorization", adminToken)
+	assignTunnelRes := httptest.NewRecorder()
+	router.ServeHTTP(assignTunnelRes, assignTunnelReq)
+	assertCode(t, assignTunnelRes, 0)
+
+	assignUserReq := httptest.NewRequest(http.MethodPost, "/api/v1/group/user/assign", bytes.NewBufferString(`{"groupId":`+jsonNumber(userGroupID)+`,"userIds":[201]}`))
+	assignUserReq.Header.Set("Authorization", adminToken)
+	assignUserRes := httptest.NewRecorder()
+	router.ServeHTTP(assignUserRes, assignUserReq)
+	assertCode(t, assignUserRes, 0)
+
+	assignPermissionReq := httptest.NewRequest(http.MethodPost, "/api/v1/group/permission/assign", bytes.NewBufferString(`{"userGroupId":`+jsonNumber(userGroupID)+`,"tunnelGroupId":`+jsonNumber(tunnelGroupID)+`}`))
+	assignPermissionReq.Header.Set("Authorization", adminToken)
+	assignPermissionRes := httptest.NewRecorder()
+	router.ServeHTTP(assignPermissionRes, assignPermissionReq)
+	assertCode(t, assignPermissionRes, 0)
+
+	permissionID := mustQueryInt64(t, repo, `SELECT id FROM group_permission WHERE user_group_id = ? AND tunnel_group_id = ?`, userGroupID, tunnelGroupID)
+
+	userTunnelID := mustQueryInt64(t, repo, `SELECT id FROM user_tunnel WHERE user_id = 201 AND tunnel_id = ?`, tunnelID)
+
+	grantCount := mustQueryInt(t, repo, `SELECT COUNT(1) FROM group_permission_grant WHERE user_tunnel_id = ?`, userTunnelID)
+	if grantCount == 0 {
+		t.Fatalf("expected non-zero grants after permission assign")
+	}
+
+	removeReq := httptest.NewRequest(http.MethodPost, "/api/v1/group/permission/remove", bytes.NewBufferString(`{"id":`+jsonNumber(permissionID)+`}`))
+	removeReq.Header.Set("Authorization", adminToken)
+	removeRes := httptest.NewRecorder()
+	router.ServeHTTP(removeRes, removeReq)
+	assertCode(t, removeRes, 0)
+
+	permissionCount := mustQueryInt(t, repo, `SELECT COUNT(1) FROM group_permission WHERE id = ?`, permissionID)
+	if permissionCount != 0 {
+		t.Fatalf("expected group_permission removed, got %d", permissionCount)
+	}
+
+	grantCount = mustQueryInt(t, repo, `SELECT COUNT(1) FROM group_permission_grant WHERE user_tunnel_id = ?`, userTunnelID)
+	if grantCount != 0 {
+		t.Fatalf("expected grants removed after permission remove, got %d", grantCount)
+	}
+
+	userTunnelCount := mustQueryInt(t, repo, `SELECT COUNT(1) FROM user_tunnel WHERE id = ?`, userTunnelID)
+	if userTunnelCount != 0 {
+		t.Fatalf("expected user_tunnel revoked after permission remove, got %d", userTunnelCount)
+	}
+}

go-backend/tests/contract/issue313_entry_port_conflict_contract_test.go

@@ -0,0 +1,193 @@
+package contract_test
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"go-backend/internal/auth"
+	"go-backend/internal/http/response"
+)
+
+func TestIssue313_EntryPortCrossTunnelConflictContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	adminToken, err := auth.GenerateToken(1, "admin_user", 0, secret)
+	if err != nil {
+		t.Fatalf("generate admin token: %v", err)
+	}
+
+	insertNode := func(name, ip, portRange string) int64 {
+		if err := repo.DB().Exec(`
+			INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx)
+			VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+		`, name, name+"-secret", ip, ip, "", portRange, "", "v1", 1, 1, 1, now, now, 1, "[::]", "[::]", 0).Error; err != nil {
+			t.Fatalf("insert node %s: %v", name, err)
+		}
+		return mustLastInsertID(t, repo, name)
+	}
+
+	entryB1 := insertNode("issue313-entry-b1", "10.100.0.2", "2000-2010")
+	entryB2 := insertNode("issue313-entry-b2", "10.100.0.3", "2000-2010")
+	chainA := insertNode("issue313-chain-a", "10.100.0.4", "3000-3010")
+	chainB := insertNode("issue313-chain-b", "10.100.0.5", "3000-3010")
+	exitA := insertNode("issue313-exit-a", "10.100.0.6", "4000-4010")
+	exitB := insertNode("issue313-exit-b", "10.100.0.7", "4000-4010")
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "issue313-tunnel-a", 1.0, 2, "tls", 99999, now, now, 1, nil, 0).Error; err != nil {
+		t.Fatalf("insert tunnel a: %v", err)
+	}
+	tunnelAID := mustLastInsertID(t, repo, "issue313-tunnel-a")
+
+	if err := repo.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 1, ?, 2000, 'round', 1, 'tls')
+	`, tunnelAID, entryB2).Error; err != nil {
+		t.Fatalf("insert chain_tunnel entry a: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 2, ?, 3000, 'round', 1, 'tls')
+	`, tunnelAID, chainA).Error; err != nil {
+		t.Fatalf("insert chain_tunnel chain a: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 3, ?, 4000, 'round', 1, 'tls')
+	`, tunnelAID, exitA).Error; err != nil {
+		t.Fatalf("insert chain_tunnel exit a: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "issue313-tunnel-b", 1.0, 2, "tls", 99999, now, now, 1, nil, 0).Error; err != nil {
+		t.Fatalf("insert tunnel b: %v", err)
+	}
+	tunnelBID := mustLastInsertID(t, repo, "issue313-tunnel-b")
+
+	if err := repo.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 1, ?, 2000, 'round', 1, 'tls')
+	`, tunnelBID, entryB1).Error; err != nil {
+		t.Fatalf("insert chain_tunnel entry b1: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 2, ?, 3000, 'round', 1, 'tls')
+	`, tunnelBID, chainB).Error; err != nil {
+		t.Fatalf("insert chain_tunnel chain b: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 3, ?, 4000, 'round', 1, 'tls')
+	`, tunnelBID, exitB).Error; err != nil {
+		t.Fatalf("insert chain_tunnel exit b: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(3131, 1, ?, NULL, 999, 99999, 0, 0, 1, 2727251700000, 1)
+	`, tunnelAID).Error; err != nil {
+		t.Fatalf("insert user_tunnel for tunnel a: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO forward(user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(1, 'admin_user', 'issue313-forward-a', ?, '1.1.1.1:443', 'fifo', 0, 0, ?, ?, 1, 0)
+	`, tunnelAID, now, now).Error; err != nil {
+		t.Fatalf("insert forward a: %v", err)
+	}
+	forwardAID := mustLastInsertID(t, repo, "issue313-forward-a")
+
+	if err := repo.DB().Exec(`INSERT INTO forward_port(forward_id, node_id, port) VALUES(?, ?, ?)`, forwardAID, entryB2, 2000).Error; err != nil {
+		t.Fatalf("insert forward_port a: %v", err)
+	}
+
+	// Simulate legacy dirty data: tunnel A already occupies port 2000 on entryB2.
+	// When tunnel B adds entryB2, the inherited forward port should conflict cross-tunnel.
+	if err := repo.DB().Exec(`INSERT INTO forward_port(forward_id, node_id, port) VALUES(?, ?, ?)`, forwardAID, entryB2, 2000).Error; err != nil {
+		t.Fatalf("insert forward_port a on entryB2: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(3132, 1, ?, NULL, 999, 99999, 0, 0, 1, 2727251700000, 1)
+	`, tunnelBID).Error; err != nil {
+		t.Fatalf("insert user_tunnel for tunnel b: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO forward(user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(1, 'admin_user', 'issue313-forward-b', ?, '2.2.2.2:443', 'fifo', 0, 0, ?, ?, 1, 0)
+	`, tunnelBID, now, now).Error; err != nil {
+		t.Fatalf("insert forward b: %v", err)
+	}
+	forwardBID := mustLastInsertID(t, repo, "issue313-forward-b")
+
+	if err := repo.DB().Exec(`INSERT INTO forward_port(forward_id, node_id, port) VALUES(?, ?, ?)`, forwardBID, entryB1, 2000).Error; err != nil {
+		t.Fatalf("insert forward_port b: %v", err)
+	}
+
+	payload := map[string]interface{}{
+		"id":           tunnelBID,
+		"name":         "issue313-tunnel-b",
+		"type":         2,
+		"flow":         99999,
+		"trafficRatio": 1.0,
+		"status":       1,
+		"inNodeId": []map[string]interface{}{
+			{"nodeId": entryB1, "protocol": "tls", "strategy": "round"},
+			{"nodeId": entryB2, "protocol": "tls", "strategy": "round"},
+		},
+		"chainNodes": []interface{}{
+			[]map[string]interface{}{{"nodeId": chainB, "protocol": "tls", "strategy": "round"}},
+		},
+		"outNodeId": []map[string]interface{}{
+			{"nodeId": exitB, "protocol": "tls", "strategy": "round"},
+		},
+	}
+	body, err := json.Marshal(payload)
+	if err != nil {
+		t.Fatalf("marshal payload: %v", err)
+	}
+
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/tunnel/update", bytes.NewReader(body))
+	req.Header.Set("Authorization", adminToken)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+
+	router.ServeHTTP(res, req)
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+
+	if out.Code == 0 {
+		t.Fatalf("expected update failure due to cross-tunnel port conflict, got success with code 0")
+	}
+
+	msgBytes := []byte(out.Msg)
+	if !bytes.Contains(msgBytes, []byte("端口")) && !bytes.Contains(msgBytes, []byte("占用")) {
+		t.Fatalf("expected port conflict error message, got %q", out.Msg)
+	}
+
+	countB2 := mustQueryInt(t, repo, `SELECT COUNT(1) FROM forward_port WHERE forward_id = ? AND node_id = ?`, forwardBID, entryB2)
+	if countB2 > 0 {
+		t.Fatalf("expected no forward_port record for entryB2, but found %d", countB2)
+	}
+
+	chainCountB2 := mustQueryInt(t, repo, `SELECT COUNT(1) FROM chain_tunnel WHERE tunnel_id = ? AND node_id = ?`, tunnelBID, entryB2)
+	if chainCountB2 > 0 {
+		t.Fatalf("expected no chain_tunnel record for entryB2, but found %d", chainCountB2)
+	}
+}

go-backend/tests/contract/issue349_ipv6_entry_format_contract_test.go

@@ -0,0 +1,80 @@
+package contract_test
+
+import (
+	"testing"
+	"time"
+)
+
+func TestIssue349_ForwardListFormatsIPv6EntryAddressesContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	adminToken := mustAdminToken(t, secret)
+	now := time.Now().UnixMilli()
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "issue349-tunnel", 1.0, 1, "tcp", 99999, now, now, 1, nil, 0).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	tunnelID := mustLastInsertID(t, repo, "issue349-tunnel")
+
+	if err := repo.DB().Exec(`
+		INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "issue349-entry-node-a", "entry-secret-a", "2001:db8::10", "", "2001:db8::10", "32000-32010", "", "v1", 1, 1, 1, now, now, 1, "[::]", "[::]", 0).Error; err != nil {
+		t.Fatalf("insert node a: %v", err)
+	}
+	nodeAID := mustLastInsertID(t, repo, "issue349-entry-node-a")
+
+	if err := repo.DB().Exec(`
+		INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "issue349-entry-node-b", "entry-secret-b", "2001:db8::30", "", "2001:db8::30", "32000-32010", "", "v1", 1, 1, 1, now, now, 1, "[::]", "[::]", 1).Error; err != nil {
+		t.Fatalf("insert node b: %v", err)
+	}
+	nodeBID := mustLastInsertID(t, repo, "issue349-entry-node-b")
+
+	if err := repo.DB().Exec(`
+		INSERT INTO forward(user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(?, ?, ?, ?, ?, ?, 0, 0, ?, ?, 1, ?)
+	`, 1, "admin_user", "issue349-forward", tunnelID, "1.1.1.1:443", "fifo", now, now, 0).Error; err != nil {
+		t.Fatalf("insert forward: %v", err)
+	}
+	forwardID := mustLastInsertID(t, repo, "issue349-forward")
+
+	if err := repo.DB().Exec(`INSERT INTO forward_port(forward_id, node_id, port) VALUES(?, ?, ?)`, forwardID, nodeAID, 32001).Error; err != nil {
+		t.Fatalf("insert forward_port a: %v", err)
+	}
+	if err := repo.DB().Exec(`INSERT INTO forward_port(forward_id, node_id, port, in_ip) VALUES(?, ?, ?, ?)`, forwardID, nodeBID, 32002, "2001:db8::20").Error; err != nil {
+		t.Fatalf("insert forward_port b: %v", err)
+	}
+
+	out := requestContractEnvelope(t, router, adminToken, "/api/v1/forward/list", nil)
+	if out.Code != 0 {
+		t.Fatalf("forward list failed: code=%d msg=%q", out.Code, out.Msg)
+	}
+
+	rows := mustContractSlice(t, out.Data, "forward list data")
+	var target map[string]interface{}
+	for _, row := range rows {
+		item, ok := row.(map[string]interface{})
+		if !ok {
+			continue
+		}
+		if contractValueAsInt64(item["id"]) == forwardID {
+			target = item
+			break
+		}
+	}
+	if target == nil {
+		t.Fatalf("target forward %d not found in /forward/list response", forwardID)
+	}
+
+	if got := contractValueAsString(target["inIp"]); got != "[2001:db8::10]:32001,[2001:db8::20]:32002" {
+		t.Fatalf("expected bracketed IPv6 entry list, got %q", got)
+	}
+	if got := contractValueAsInt64(target["inPort"]); got != 32001 {
+		t.Fatalf("expected first entry port 32001, got %d", got)
+	}
+}