refactor(layout): consolidate backend codebase into backend/ package and clean root directory

- Moved cmd/, core/, plugins/, pkg/, downstream/, and main.go into backend/ directory
- Batch updated all Go source files to import github.com/Rain-kl/Wavelet/backend/...
- Updated Makefile, scripts/swagger.sh, architecture guards, and platform skills
- Passed all quality gates (100% tests, 0 lint issues, clean build)

backend/plugins/domain/admin/errs.go

@@ -0,0 +1,82 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package admin
+
+// 管理后台公共错误常量
+const (
+	AdminRequired          = "未经授权访问"
+	TokenAdminRequired     = "该访问令牌没有管理员权限，无法访问管理端点" //nolint:gosec // false positive: this is an error message, not hardcoded credentials
+	InvalidAuthSourceID    = "认证源 ID 无效"
+	InvalidCursorParam     = "无效的 cursor 参数"
+	InvalidTaskExecutionID = "无效的任务执行记录 ID"
+)
+
+// 系统配置错误消息常量
+const (
+	SystemConfigNotFound                 = "系统配置不存在"
+	ConfigKeyRequired                    = "配置键不能为空"
+	ConfigValueRequired                  = "配置值不能为空"
+	ConfigKeyExists                      = "配置键已存在"
+	protectedConfigKeyMessage            = "该配置项由系统任务管理，禁止手动修改"
+	StorageDriverSwitchRequiresMigration = "存在存量文件，请通过存储迁移任务切换存储引擎"
+)
+
+// 模板管理相关错误消息常量
+const (
+	TemplateNotFound              = "模板不存在"
+	TemplateKeyRequired           = "模板标识符不能为空"
+	TemplateNameRequired          = "模板名称不能为空"
+	TemplateContentRequired       = "模板内容不能为空"
+	TemplateKeyExists             = "模板标识符已存在"
+	SystemTemplateCannotDelete    = "系统预置模板不可删除"
+	SystemTemplateCannotModifyKey = "系统预置模板不可修改标识符"
+)
+
+// 任务调度相关错误消息常量
+const (
+	InvalidTaskType       = "无效的任务类型"
+	InvalidTimeRange      = "无效的时间范围"
+	TaskDispatchFailed    = "任务下发失败"
+	UserIDRequired        = "用户ID必填"
+	TaskNotFound          = "任务执行记录不存在"
+	TaskNotRetryable      = "该任务不支持重试"
+	TaskNotFailed         = "只有失败的任务才能重试"
+	TaskMaxRetryExceeded  = "已达到最大重试次数"
+	TaskRetryFailed       = "任务重试失败"
+	InvalidCronExpression = "无效的 Cron 表达式"
+	ScheduleNotFound      = "定时任务不存在"
+	ScheduleSaveFailed    = "保存定时任务失败"
+	ScheduleDeleteFailed  = "删除定时任务失败"
+)
+
+// 应用更新相关错误消息常量
+const (
+	errInvalidRepository       = "上游仓库地址无效"
+	errReleaseRequestFailed    = "获取上游版本失败"
+	errReleaseResponseInvalid  = "上游版本响应无效"
+	errNoCompatibleRelease     = "未找到兼容的 Release"
+	errNoCompatibleAsset       = "未找到当前系统对应的 Release 资产"
+	errDevelopmentBuild        = "开发版本无法执行自动升级"
+	errAlreadyUpToDate         = "当前已是最新版本"
+	errUpgradeAlreadyRunning   = "已有升级任务正在执行"
+	errAutomaticUpgradeBlocked = "当前平台暂不支持自动替换二进制"
+)
+
+// 用户管理（管理员视角）错误消息常量
+const (
+	userNotFound     = "用户不存在"
+	cannotDisable    = "不能禁用管理员账号"
+	cannotDelete     = "不能删除管理员账号"
+	cannotDeleteSelf = "不能删除当前登录账号"
+	usernameRequired = "用户名不能为空"
+	emailRequired    = "邮箱不能为空"
+	//nolint:gosec // error message, not hardcoded credentials
+	passwordTooShort      = "密码长度不能少于 8 位"
+	usernameExists        = "用户名已存在"
+	emailExists           = "邮箱已被使用"
+	cannotRevokeSelfAdmin = "不能取消自身的管理员权限"
+	updateUserFailed      = "更新用户状态失败"
+	deleteUserFailed      = "删除用户失败"
+	updateUserInfoFailed  = "更新用户信息失败"
+)

backend/plugins/domain/admin/handlers_auth_source.go

@@ -0,0 +1,157 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package admin
+
+import (
+	"net/http"
+	"strconv"
+
+	"github.com/Rain-kl/Wavelet/backend/pkg/response"
+	"github.com/Rain-kl/Wavelet/backend/plugins/domain/auth"
+	"github.com/Rain-kl/Wavelet/backend/plugins/infra/database"
+	"github.com/gin-gonic/gin"
+)
+
+// ListAuthSources lists all configured authentication sources.
+func ListAuthSources(c *gin.Context) {
+	var sources []auth.AuthSource
+	gormDB := database.DB(c.Request.Context())
+	if err := gormDB.Order("id ASC").Find(&sources).Error; err != nil {
+		response.AbortInternal(c, "获取认证源列表失败")
+		return
+	}
+
+	views := make([]auth.AuthSourceView, len(sources))
+	for i := range sources {
+		views[i] = auth.AuthSourceView{
+			ID:                     sources[i].ID,
+			Name:                   sources[i].Name,
+			Type:                   sources[i].Type,
+			DisplayName:            sources[i].DisplayName,
+			IsActive:               sources[i].IsActive,
+			IconURL:                sources[i].IconURL,
+			ClientSecretConfigured: sources[i].ClientSecret != "",
+		}
+	}
+
+	c.JSON(http.StatusOK, response.OK(views))
+}
+
+// CreateAuthSource creates a new authentication source.
+func CreateAuthSource(c *gin.Context) {
+	var source auth.AuthSource
+	if err := c.ShouldBindJSON(&source); err != nil {
+		response.AbortBadRequest(c, "无效的参数")
+		return
+	}
+
+	if err := source.Validate(); err != nil {
+		response.AbortBadRequest(c, err.Error())
+		return
+	}
+
+	gormDB := database.DB(c.Request.Context())
+	if err := gormDB.Create(&source).Error; err != nil {
+		response.AbortBadRequest(c, "创建认证源失败: "+err.Error())
+		return
+	}
+
+	source.Sanitize()
+	c.JSON(http.StatusOK, response.OK(source))
+}
+
+// UpdateAuthSource updates an authentication source.
+func UpdateAuthSource(c *gin.Context) {
+	idStr := c.Param("id")
+	id, err := strconv.ParseUint(idStr, 10, 64)
+	if err != nil {
+		response.AbortBadRequest(c, "无效的认证源 ID")
+		return
+	}
+
+	gormDB := database.DB(c.Request.Context())
+	var existing auth.AuthSource
+	if err := gormDB.First(&existing, id).Error; err != nil {
+		response.AbortNotFound(c, "认证源不存在")
+		return
+	}
+
+	var req auth.AuthSource
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.AbortBadRequest(c, "无效的参数")
+		return
+	}
+
+	existing.DisplayName = req.DisplayName
+	existing.ClientID = req.ClientID
+	if req.ClientSecret != "" {
+		existing.ClientSecret = req.ClientSecret
+	}
+	existing.OpenIDDiscoveryURL = req.OpenIDDiscoveryURL
+	existing.Scopes = req.Scopes
+	existing.IconURL = req.IconURL
+
+	if err := existing.Validate(); err != nil {
+		response.AbortBadRequest(c, err.Error())
+		return
+	}
+
+	if err := gormDB.Save(&existing).Error; err != nil {
+		response.AbortInternal(c, "更新认证源失败")
+		return
+	}
+
+	existing.Sanitize()
+	c.JSON(http.StatusOK, response.OK(existing))
+}
+
+// ToggleAuthSource toggles the active state of an auth source.
+func ToggleAuthSource(c *gin.Context) {
+	idStr := c.Param("id")
+	id, err := strconv.ParseUint(idStr, 10, 64)
+	if err != nil {
+		response.AbortBadRequest(c, "无效的认证源 ID")
+		return
+	}
+
+	gormDB := database.DB(c.Request.Context())
+	var existing auth.AuthSource
+	if err := gormDB.First(&existing, id).Error; err != nil {
+		response.AbortNotFound(c, "认证源不存在")
+		return
+	}
+
+	existing.IsActive = !existing.IsActive
+	if existing.IsActive {
+		if err := existing.Validate(); err != nil {
+			response.AbortBadRequest(c, err.Error())
+			return
+		}
+	}
+
+	if err := gormDB.Model(&existing).Update("is_active", existing.IsActive).Error; err != nil {
+		response.AbortInternal(c, "切换认证源状态失败")
+		return
+	}
+
+	c.JSON(http.StatusOK, response.OK(gin.H{"is_active": existing.IsActive}))
+}
+
+// DeleteAuthSource deletes an authentication source.
+func DeleteAuthSource(c *gin.Context) {
+	idStr := c.Param("id")
+	id, err := strconv.ParseUint(idStr, 10, 64)
+	if err != nil {
+		response.AbortBadRequest(c, "无效的认证源 ID")
+		return
+	}
+
+	gormDB := database.DB(c.Request.Context())
+	if err := gormDB.Delete(&auth.AuthSource{}, id).Error; err != nil {
+		response.AbortInternal(c, "删除认证源失败")
+		return
+	}
+
+	c.JSON(http.StatusOK, response.OKNil())
+}

backend/plugins/domain/admin/handlers_cache.go

@@ -0,0 +1,103 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package admin
+
+import (
+	"context"
+	"net/http"
+	"strconv"
+
+	"github.com/gin-gonic/gin"
+
+	"github.com/Rain-kl/Wavelet/backend/pkg/response"
+	"github.com/Rain-kl/Wavelet/backend/plugins/infra/storage/diskcache"
+)
+
+type updateCacheConfigRequest struct {
+	MaxSizeMB  int64 `json:"max_size_mb" binding:"required,min=1"`
+	TTLMinutes int64 `json:"ttl_minutes" binding:"required,min=0"`
+	LRUEnabled bool  `json:"lru_enabled"`
+}
+
+// GetCacheStatus 获取磁盘缓存状态与当前统计数据
+// @Summary 获取缓存状态
+// @Description 获取当前系统磁盘缓存的使用情况（已占用字节、Key 数量等）与策略配置
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Success 200 {object} response.Any{data=diskcache.Status} "获取成功"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 500 {object} response.Any "内部错误"
+// @Router /api/v1/admin/cache/status [get]
+func GetCacheStatus(c *gin.Context) {
+	status := diskcache.GetGlobalCache().Status()
+	c.JSON(http.StatusOK, response.OK(status))
+}
+
+// UpdateCacheConfig 更新磁盘缓存策略配置
+// @Summary 更新缓存配置
+// @Description 更改磁盘缓存最大容量限制、文件生存时间（TTL）以及是否启用 LRU 淘汰淘汰算法，并进行热更新
+// @Tags admin
+// @Accept json
+// @Produce json
+// @Param request body updateCacheConfigRequest true "缓存配置请求体"
+// @Security SessionCookie
+// @Success 200 {object} response.Any "更新成功"
+// @Failure 400 {object} response.Any "参数错误"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 500 {object} response.Any "服务内部错误"
+// @Router /api/v1/admin/cache/config [post]
+func UpdateCacheConfig(c *gin.Context) {
+	var req updateCacheConfigRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.AbortBadRequest(c, err.Error())
+		return
+	}
+
+	ctx := c.Request.Context()
+
+	if err := saveOrUpdateCacheConfig(ctx, ConfigKeyDiskCacheMaxSizeMB, strconv.FormatInt(req.MaxSizeMB, 10)); err != nil {
+		response.AbortInternal(c, err.Error())
+		return
+	}
+
+	if err := saveOrUpdateCacheConfig(ctx, ConfigKeyDiskCacheTTLMinutes, strconv.FormatInt(req.TTLMinutes, 10)); err != nil {
+		response.AbortInternal(c, err.Error())
+		return
+	}
+
+	if err := saveOrUpdateCacheConfig(ctx, ConfigKeyDiskCacheLRUEnabled, strconv.FormatBool(req.LRUEnabled)); err != nil {
+		response.AbortInternal(c, err.Error())
+		return
+	}
+
+	diskcache.GetGlobalCache().ReloadConfig(ctx)
+
+	c.JSON(http.StatusOK, response.OKNil())
+}
+
+// ClearCache 一键清空所有磁盘缓存数据
+// @Summary 清空缓存
+// @Description 清除系统磁盘缓存目录中的所有临时文件，并重置缓存容量和 Key 追踪数据
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Success 200 {object} response.Any "清理成功"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 500 {object} response.Any "服务内部错误"
+// @Router /api/v1/admin/cache/clear [post]
+func ClearCache(c *gin.Context) {
+	if err := diskcache.GetGlobalCache().Clear(); err != nil {
+		response.AbortInternal(c, err.Error())
+		return
+	}
+	c.JSON(http.StatusOK, response.OKNil())
+}
+
+func saveOrUpdateCacheConfig(ctx context.Context, key, value string) error {
+	return SaveOrUpdateSystemConfig(ctx, key, value)
+}

backend/plugins/domain/admin/handlers_config.go

@@ -0,0 +1,533 @@
+// Copyright 2025 linux.do
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package admin
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/Rain-kl/Wavelet/backend/pkg/logger"
+	mail "github.com/Rain-kl/Wavelet/backend/pkg/mail"
+	"github.com/Rain-kl/Wavelet/backend/pkg/response"
+	"github.com/Rain-kl/Wavelet/backend/plugins/domain/cap"
+	cachepkg "github.com/Rain-kl/Wavelet/backend/plugins/infra/cache"
+	db "github.com/Rain-kl/Wavelet/backend/plugins/infra/database"
+	"github.com/Rain-kl/Wavelet/backend/plugins/infra/storage/objectstore"
+	"github.com/gin-gonic/gin"
+	"gorm.io/gorm"
+)
+
+const maskedConfigValue = "******"
+
+// CreateSystemConfigRequest 创建系统配置请求
+type CreateSystemConfigRequest struct {
+	Key         string `json:"key" binding:"required,max=64"`
+	Value       string `json:"value" binding:"required"`
+	Type        string `json:"type" binding:"required,oneof=system business"`
+	Visibility  int    `json:"visibility" binding:"oneof=0 1"`
+	Description string `json:"description" binding:"max=255"`
+}
+
+// UpdateSystemConfigRequest 更新系统配置请求
+type UpdateSystemConfigRequest struct {
+	Value       string `json:"value" binding:"required"`
+	Visibility  *int   `json:"visibility" binding:"omitempty,oneof=0 1"`
+	Description string `json:"description" binding:"max=255"`
+}
+
+// GetPublicConfig 获取公共配置
+// @Summary 获取公共配置
+// @Description 返回系统配置表中 visibility 为 1 的配置键值集合
+// @Tags config
+// @Accept json
+// @Produce json
+// @Success 200 {object} response.Any
+// @Router /api/v1/config/public [get]
+func GetPublicConfig(c *gin.Context) {
+	ctx := c.Request.Context()
+	configs, err := ListVisibleSystemConfigs(ctx)
+	if err != nil {
+		response.AbortInternal(c, err.Error())
+		return
+	}
+
+	resp := make(map[string]string, len(configs))
+	for _, config := range configs {
+		resp[config.Key] = config.Value
+	}
+
+	c.JSON(http.StatusOK, response.OK(resp))
+}
+
+// GetRobotsTXT 动态生成 robots.txt
+// @Summary 获取 robots.txt
+// @Description 根据系统配置决定是否允许搜索引擎检索，并返回相应的 robots.txt 文件内容
+// @Tags config
+// @Produce text/plain
+// @Success 200 {string} string "robots.txt 内容"
+// @Router /robots.txt [get]
+func GetRobotsTXT(c *gin.Context) {
+	ctx := c.Request.Context()
+	enabled, err := GetBoolByKey(ctx, ConfigKeySearchEngineIndexingEnabled)
+	content := "User-Agent: *\nDisallow: /\n"
+	if err == nil && enabled {
+		content = "User-Agent: *\nAllow: /\n"
+	}
+	c.Data(http.StatusOK, "text/plain; charset=utf-8", []byte(content))
+}
+
+// CreateSystemConfig 创建系统配置
+// @Summary 创建系统配置
+// @Description 创建一条新的系统配置项，配置键不可重复，同时将新配置同步到 Redis，需要管理员权限
+// @Tags admin
+// @Accept json
+// @Produce json
+// @Security SessionCookie
+// @Param request body CreateSystemConfigRequest true "创建请求参数"
+// @Success 200 {object} response.Any{data=string} "创建成功"
+// @Failure 400 {object} response.Any "参数错误或配置键已存在"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 500 {object} response.Any "内部错误"
+// @Router /api/v1/admin/system-configs [post]
+func CreateSystemConfig(c *gin.Context) {
+	var req CreateSystemConfigRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.AbortBadRequest(c, err.Error())
+		return
+	}
+	if isProtectedConfigKey(req.Key) {
+		response.AbortBadRequest(c, protectedConfigKeyMessage)
+		return
+	}
+
+	if err := createSystemConfig(c.Request.Context(), req); err != nil {
+		if err.Error() == ConfigKeyExists {
+			response.AbortBadRequest(c, ConfigKeyExists)
+			return
+		}
+		response.AbortInternal(c, err.Error())
+		return
+	}
+
+	c.JSON(http.StatusOK, response.OKNil())
+}
+
+// ListSystemConfigs 获取系统配置列表
+// @Summary 获取系统配置列表
+// @Description 返回所有系统配置列表，支持按配置类型（system/business）过滤，需要管理员权限
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Param type query string false "配置类型（system/business）"
+// @Success 200 {object} response.Any{data=[]SystemConfig} "系统配置列表"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 500 {object} response.Any "内部错误"
+// @Router /api/v1/admin/system-configs [get]
+func ListSystemConfigs(c *gin.Context) {
+	configs, err := listSystemConfigs(c.Request.Context(), c.Query("type"))
+	if err != nil {
+		response.AbortInternal(c, err.Error())
+		return
+	}
+
+	for i := range configs {
+		configs[i].Value = maskSensitiveConfig(configs[i].Key, configs[i].Value)
+	}
+
+	c.JSON(http.StatusOK, response.OK(configs))
+}
+
+// GetSystemConfig 获取单个系统配置
+// @Summary 获取单个系统配置
+// @Description 根据配置键获取对应的系统配置详情，需要管理员权限
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Param key path string true "配置键"
+// @Success 200 {object} response.Any{data=SystemConfig} "系统配置详情"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 404 {object} response.Any "配置不存在"
+// @Failure 500 {object} response.Any "内部错误"
+// @Router /api/v1/admin/system-configs/{key} [get]
+func GetSystemConfig(c *gin.Context) {
+	config, err := getSystemConfig(c.Request.Context(), c.Param("key"))
+	if err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			response.AbortNotFound(c, SystemConfigNotFound)
+		} else {
+			response.AbortInternal(c, err.Error())
+		}
+		return
+	}
+
+	config.Value = maskSensitiveConfig(config.Key, config.Value)
+
+	c.JSON(http.StatusOK, response.OK(config))
+}
+
+// UpdateSystemConfig 更新系统配置
+// @Summary 更新系统配置
+// @Description 根据配置键更新对应的配置内容，同时将更新同步到 Redis，需要管理员权限
+// @Tags admin
+// @Accept json
+// @Produce json
+// @Security SessionCookie
+// @Param key path string true "配置键"
+// @Param request body UpdateSystemConfigRequest true "更新请求参数"
+// @Success 200 {object} response.Any{data=string} "更新成功"
+// @Failure 400 {object} response.Any "参数错误"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 404 {object} response.Any "配置不存在"
+// @Failure 500 {object} response.Any "内部错误"
+// @Router /api/v1/admin/system-configs/{key} [put]
+func UpdateSystemConfig(c *gin.Context) {
+	var req UpdateSystemConfigRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.AbortBadRequest(c, err.Error())
+		return
+	}
+
+	key := c.Param("key")
+	if isProtectedConfigKey(key) {
+		response.AbortBadRequest(c, protectedConfigKeyMessage)
+		return
+	}
+	if err := updateSystemConfig(c.Request.Context(), key, req); err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			response.AbortNotFound(c, SystemConfigNotFound)
+			return
+		}
+		if isStorageConfigValidationError(err) {
+			response.AbortBadRequest(c, err.Error())
+			return
+		}
+		response.AbortInternal(c, err.Error())
+		return
+	}
+
+	c.JSON(http.StatusOK, response.OKNil())
+}
+
+func isProtectedConfigKey(key string) bool {
+	return key == ConfigKeyLogDatabase || key == ConfigKeyLogDBMigration
+}
+
+func createSystemConfig(ctx context.Context, req CreateSystemConfigRequest) error {
+	if isProtectedConfigKey(req.Key) {
+		return errors.New(protectedConfigKeyMessage)
+	}
+	exists, err := SystemConfigExists(ctx, req.Key)
+	if err != nil {
+		return err
+	}
+	if exists {
+		return errors.New(ConfigKeyExists)
+	}
+
+	config := SystemConfig{
+		Key:         req.Key,
+		Value:       req.Value,
+		Type:        req.Type,
+		Visibility:  req.Visibility,
+		Description: req.Description,
+	}
+	if err := CreateSystemConfigRecord(ctx, &config); err != nil {
+		return err
+	}
+
+	invalidateSystemConfigCaches(ctx, req.Key)
+	if err := InvalidateVisibleSystemConfigsCache(ctx); err != nil {
+		logger.WarnF(ctx, "清理公共配置列表缓存失败: %v", err)
+	}
+	return nil
+}
+
+func listSystemConfigs(ctx context.Context, configType string) ([]SystemConfig, error) {
+	return ListAdminSystemConfigs(ctx, configType)
+}
+
+func getSystemConfig(ctx context.Context, key string) (SystemConfig, error) {
+	return GetAdminSystemConfigByKey(ctx, key)
+}
+
+func updateSystemConfig(ctx context.Context, key string, req UpdateSystemConfigRequest) error {
+	if isProtectedConfigKey(key) {
+		return errors.New(protectedConfigKeyMessage)
+	}
+	config, err := GetAdminSystemConfigByKey(ctx, key)
+	if err != nil {
+		return err
+	}
+
+	var originalDriver objectstore.Driver
+	if key == ConfigKeyStorageConfig {
+		var currentCfg objectstore.Config
+		if err := json.Unmarshal([]byte(config.Value), &currentCfg); err == nil {
+			originalDriver = currentCfg.Driver
+		}
+
+		validatedVal, err := validateAndMergeStorageConfig(ctx, req.Value, config.Value)
+		if err != nil {
+			return err
+		}
+		req.Value = validatedVal
+	}
+
+	if err := db.DB(ctx).Transaction(func(tx *gorm.DB) error {
+		updates := map[string]any{
+			"description": req.Description,
+		}
+		if req.Visibility != nil {
+			updates["visibility"] = *req.Visibility
+			config.Visibility = *req.Visibility
+		}
+		if key != ConfigKeySMTPPassword || req.Value != maskedConfigValue {
+			updates["value"] = req.Value
+			config.Value = req.Value
+		}
+		if err := tx.Model(&config).Updates(updates).Error; err != nil {
+			return err
+		}
+		resolveStorageMigrationTasksOnDirectDriverUpdate(ctx, tx, key, originalDriver, req.Value)
+		return nil
+	}); err != nil {
+		return err
+	}
+
+	invalidateCachesAfterConfigUpdate(ctx, key)
+	return nil
+}
+
+func resolveStorageMigrationTasksOnDirectDriverUpdate(
+	ctx context.Context,
+	tx *gorm.DB,
+	key string,
+	originalDriver objectstore.Driver,
+	newValue string,
+) {
+	if key != ConfigKeyStorageConfig || originalDriver == "" {
+		return
+	}
+
+	var newCfg objectstore.Config
+	if err := json.Unmarshal([]byte(newValue), &newCfg); err != nil {
+		return
+	}
+	if newCfg.Driver != originalDriver {
+		return
+	}
+
+	if err := MarkFailedTaskExecutionsSucceededTx(
+		tx,
+		"storage:migrate",
+		"存储配置直接更新，故障迁移任务自动标记为已解决",
+		time.Now(),
+	); err != nil {
+		logger.ErrorF(ctx, "自动更新迁移任务状态失败: %v", err)
+	}
+}
+
+func invalidateSystemConfigCaches(ctx context.Context, key string) {
+	if err := InvalidateSystemConfigCache(ctx, key); err != nil {
+		logger.WarnF(ctx, "清理系统配置缓存失败: %v", err)
+	}
+	if cap.IsRuntimeConfigKey(key) {
+		cap.InvalidateRuntimeSettings()
+	}
+}
+
+func invalidateCachesAfterConfigUpdate(ctx context.Context, key string) {
+	invalidateSystemConfigCaches(ctx, key)
+
+	if key == ConfigKeyStorageConfig {
+		if cachepkg.Redis != nil {
+			_ = cachepkg.Redis.Publish(ctx, "upload:access_cache:invalidate", "reset").Err()
+		}
+		objectstore.ResetCache()
+		objectstore.PublishCacheInvalidation(ctx)
+	}
+	if key == ConfigKeyFileAccessWhitelist {
+		if cachepkg.Redis != nil {
+			_ = cachepkg.Redis.Publish(ctx, "upload:access_cache:invalidate", "reset").Err()
+		}
+	}
+
+	if err := InvalidateVisibleSystemConfigsCache(ctx); err != nil {
+		logger.WarnF(ctx, "清理公共配置列表缓存失败: %v", err)
+	}
+}
+
+// TestSMTPRequest 测试 SMTP 配置请求
+type TestSMTPRequest struct {
+	SMTPHost     string `json:"smtp_host" binding:"required,max=255"`
+	SMTPPort     int    `json:"smtp_port" binding:"required"`
+	SMTPUsername string `json:"smtp_username" binding:"required,max=255"`
+	SMTPPassword string `json:"smtp_password" binding:"required,max=255"`
+	To           string `json:"to" binding:"required,email"`
+}
+
+// TestSMTPResponse 测试 SMTP 配置响应
+type TestSMTPResponse struct {
+	Success bool   `json:"success"`
+	Log     string `json:"log"`
+	Error   string `json:"error"`
+}
+
+// TestSMTP 测试 SMTP 邮件发送
+// @Summary 测试 SMTP 邮件发送
+// @Description 使用传入的配置进行 SMTP 邮件发送测试，支持使用 ****** 占位符使用保存的数据库密码
+// @Tags admin
+// @Accept json
+// @Produce json
+// @Security SessionCookie
+// @Param request body TestSMTPRequest true "测试请求参数"
+// @Success 200 {object} response.Any{data=TestSMTPResponse} "测试执行完毕"
+// @Failure 400 {object} response.Any "参数错误"
+// @Router /api/v1/admin/system-configs/smtp/test [post]
+func TestSMTP(c *gin.Context) {
+	var req TestSMTPRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.AbortBadRequest(c, err.Error())
+		return
+	}
+
+	password := req.SMTPPassword
+	if password == maskedConfigValue {
+		if sc, err := GetSystemConfigByKey(c.Request.Context(), ConfigKeySMTPPassword); err == nil {
+			password = sc.Value
+		}
+	}
+
+	cfg := mail.Config{
+		Host:     req.SMTPHost,
+		Port:     req.SMTPPort,
+		Username: req.SMTPUsername,
+		Password: password,
+	}
+
+	subject := "Wavelet SMTP Test Mail"
+	body := `<h3>SMTP Mail Connection Test</h3>
+<p>If you received this message, your SMTP configuration is correct and mail sending is working properly.</p>
+<p>Sent from Wavelet.</p>`
+
+	logs, err := mail.SendMailWithLog(c.Request.Context(), cfg, req.To, subject, body)
+	resp := TestSMTPResponse{
+		Success: err == nil,
+		Log:     logs,
+	}
+	if err != nil {
+		resp.Error = err.Error()
+	}
+
+	c.JSON(http.StatusOK, response.OK(resp))
+}
+
+func isStorageConfigValidationError(err error) bool {
+	msg := err.Error()
+	return msg == StorageDriverSwitchRequiresMigration ||
+		strings.HasPrefix(msg, "解析") ||
+		strings.HasPrefix(msg, "验证") ||
+		strings.HasPrefix(msg, "初始化测试") ||
+		strings.HasPrefix(msg, "存储连通性") ||
+		strings.HasPrefix(msg, "序列化") ||
+		strings.HasPrefix(msg, "检查存量文件")
+}
+
+func maskSensitiveConfig(key, value string) string {
+	if value == "" {
+		return value
+	}
+	switch key {
+	case ConfigKeySMTPPassword:
+		return maskedConfigValue
+	case ConfigKeyStorageConfig:
+		var cfg objectstore.Config
+		if err := json.Unmarshal([]byte(value), &cfg); err == nil {
+			masked := objectstore.MaskSecrets(cfg)
+			if val, err := json.Marshal(masked); err == nil {
+				return string(val)
+			}
+		}
+	}
+	return value
+}
+
+// validateAndMergeStorageConfig parses, merges unmasked secrets, validates parameter values,
+// and tests connectivity of the new storage configuration.
+func validateAndMergeStorageConfig(ctx context.Context, value string, currentConfig string) (string, error) {
+	var currentCfg objectstore.Config
+	if err := json.Unmarshal([]byte(currentConfig), &currentCfg); err != nil {
+		return "", fmt.Errorf("解析当前存储配置失败: %w", err)
+	}
+
+	var newCfg objectstore.Config
+	if err := json.Unmarshal([]byte(value), &newCfg); err != nil {
+		return "", fmt.Errorf("解析目标存储配置失败: %w", err)
+	}
+
+	// 合并被掩码屏蔽的敏感信息，获取完整的真实配置
+	targetCfg := objectstore.MergeMaskedSecrets(newCfg, currentCfg)
+	if err := validateMergedStorageConfig(ctx, currentCfg, newCfg, targetCfg); err != nil {
+		return "", err
+	}
+
+	// 序列化为最终保存的真实明文配置，防止保存屏蔽的 ****** 字符
+	unmaskedVal, err := json.Marshal(targetCfg)
+	if err != nil {
+		return "", fmt.Errorf("序列化存储配置失败: %w", err)
+	}
+
+	return string(unmaskedVal), nil
+}
+
+func validateMergedStorageConfig(ctx context.Context, currentCfg, newCfg, targetCfg objectstore.Config) error {
+	if newCfg.Driver != "" && newCfg.Driver != currentCfg.Driver {
+		var uploadCount int64
+		if err := db.DB(ctx).Table("w_uploads").
+			Where("status != ?", "deleted").
+			Count(&uploadCount).Error; err != nil {
+			return fmt.Errorf("检查存量文件失败: %w", err)
+		}
+		if uploadCount > 0 {
+			return errors.New(StorageDriverSwitchRequiresMigration)
+		}
+		if err := validateDriverConfig(targetCfg, newCfg.Driver); err != nil {
+			return fmt.Errorf("验证目标存储配置参数失败: %w", err)
+		}
+		pendingCfg := targetCfg
+		pendingCfg.Driver = newCfg.Driver
+		return testStorageBackend(ctx, pendingCfg, newCfg.Driver)
+	}
+
+	if err := objectstore.ValidateConfig(targetCfg); err != nil {
+		return fmt.Errorf("验证存储配置参数失败: %w", err)
+	}
+	return testStorageBackend(ctx, targetCfg, targetCfg.Driver)
+}
+
+func validateDriverConfig(cfg objectstore.Config, driver objectstore.Driver) error {
+	cfg.Driver = driver
+	return objectstore.ValidateConfig(cfg)
+}
+
+func testStorageBackend(ctx context.Context, cfg objectstore.Config, driver objectstore.Driver) error {
+	testBackend, err := objectstore.NewBackend(ctx, cfg, driver)
+	if err != nil {
+		return fmt.Errorf("初始化测试存储实例失败: %w", err)
+	}
+	if err := testBackend.Test(ctx); err != nil {
+		return fmt.Errorf("存储连通性测试失败: %w", err)
+	}
+	return nil
+}

backend/plugins/domain/admin/handlers_db.go

@@ -0,0 +1,646 @@
+// Copyright 2025 linux.do
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package admin
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"log"
+	"math"
+	"net/http"
+	"os"
+	"os/exec"
+	"strings"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"gorm.io/gorm"
+
+	"github.com/Rain-kl/Wavelet/backend/pkg/config"
+	"github.com/Rain-kl/Wavelet/backend/pkg/response"
+	db "github.com/Rain-kl/Wavelet/backend/plugins/infra/database"
+)
+
+const (
+	binaryKB        = 0
+	binaryMB        = 1
+	binaryGB        = 2
+	valueThreshold  = 10
+	maxStringLength = 200
+)
+
+// DBOverviewResponse 数据库运行概览响应结构体
+type DBOverviewResponse struct {
+	Type        string `json:"type"`
+	Version     string `json:"version"`
+	Name        string `json:"name"`
+	Size        string `json:"size"`
+	TableCount  int64  `json:"table_count"`
+	Connections int64  `json:"connections"`
+}
+
+// GetTableDataRequest 分页拉取表数据请求结构体
+type GetTableDataRequest struct {
+	Table    string `form:"table" binding:"required"`
+	Page     int    `form:"page,default=1"`
+	PageSize int    `form:"pageSize,default=10"`
+}
+
+// TableDataResponse 动态数据表响应结构体
+type TableDataResponse struct {
+	Columns []string                 `json:"columns"`
+	Total   int64                    `json:"total"`
+	Results []map[string]interface{} `json:"results"`
+}
+
+// ExecuteSQLRequest 执行自定义 SQL 请求结构体
+type ExecuteSQLRequest struct {
+	SQL string `json:"sql" binding:"required"`
+}
+
+// ExecuteSQLResponse 执行自定义 SQL 响应结构体
+type ExecuteSQLResponse struct {
+	Type            string                   `json:"type"` // "select" 或 "exec"
+	Columns         []string                 `json:"columns,omitempty"`
+	Results         []map[string]interface{} `json:"results,omitempty"`
+	AffectedRows    int64                    `json:"affected_rows"`
+	ExecutionTimeMs int64                    `json:"execution_time_ms"`
+}
+
+// DatabaseInfoResponse 数据库信息响应结构体
+type DatabaseInfoResponse struct {
+	Type    string `json:"type"`
+	Name    string `json:"name"`
+	Version string `json:"version"`
+}
+
+func formatBytes(bytes uint64) string {
+	const unit = 1024
+	if bytes < unit {
+		return fmt.Sprintf("%d B", bytes)
+	}
+	div, exp := int64(unit), 0
+	for n := bytes / unit; n >= unit; n /= unit {
+		div *= unit
+		exp++
+	}
+	value := float64(bytes) / float64(div)
+	var suffix string
+	switch exp {
+	case binaryKB:
+		suffix = "KiB"
+	case binaryMB:
+		suffix = "MiB"
+	case binaryGB:
+		suffix = "GiB"
+	default:
+		suffix = "TiB"
+	}
+
+	if value == math.Trunc(value) {
+		if value >= valueThreshold {
+			return fmt.Sprintf("%.0f %s", value, suffix)
+		}
+		return fmt.Sprintf("%.1f %s", value, suffix)
+	}
+	return fmt.Sprintf("%.1f %s", value, suffix)
+}
+
+const defaultSQLiteDBPath = "./data/wavelet.db"
+
+func getSQLiteOverview(gormDB *gorm.DB) (DBOverviewResponse, error) {
+	name := config.Config.Database.SQLitePath
+	if name == "" {
+		name = defaultSQLiteDBPath
+	}
+
+	var version string
+	var ver string
+	if err := gormDB.Raw("SELECT sqlite_version()").Scan(&ver).Error; err == nil {
+		version = "SQLite " + ver
+	} else {
+		version = "SQLite"
+	}
+
+	var sizeStr string
+	if fi, err := os.Stat(name); err == nil {
+		size := fi.Size()
+		if size < 0 {
+			size = 0
+		}
+		sizeStr = formatBytes(uint64(size))
+	} else {
+		sizeStr = "0 B"
+	}
+
+	var tableCount int64
+	if err := gormDB.Raw("SELECT count(*) FROM sqlite_master WHERE type='table' AND name NOT LIKE 'sqlite_%'").Scan(&tableCount).Error; err != nil {
+		tableCount = 0
+	}
+
+	var connCount int64
+	if sqlDB, err := gormDB.DB(); err == nil {
+		connCount = int64(sqlDB.Stats().OpenConnections)
+	} else {
+		connCount = 1
+	}
+
+	return DBOverviewResponse{
+		Type:        "sqlite",
+		Version:     version,
+		Name:        name,
+		Size:        sizeStr,
+		TableCount:  tableCount,
+		Connections: connCount,
+	}, nil
+}
+
+func getPostgresOverview(gormDB *gorm.DB) (DBOverviewResponse, error) {
+	name := config.Config.Database.Database
+
+	var version string
+	var ver string
+	if err := gormDB.Raw("SELECT version()").Scan(&ver).Error; err == nil {
+		version = ver
+	} else {
+		version = "PostgreSQL"
+	}
+
+	var sizeStr string
+	var sizeBytes sql.NullInt64
+	if err := gormDB.Raw("SELECT pg_database_size(current_database())").Scan(&sizeBytes).Error; err == nil && sizeBytes.Valid {
+		size := sizeBytes.Int64
+		if size < 0 {
+			size = 0
+		}
+		sizeStr = formatBytes(uint64(size))
+	} else {
+		sizeStr = "0 B"
+	}
+
+	var tableCount int64
+	if err := gormDB.Raw("SELECT count(*) FROM information_schema.tables WHERE table_schema = current_schema()").Scan(&tableCount).Error; err != nil {
+		tableCount = 0
+	}
+
+	var connCount int64
+	var pgc sql.NullInt64
+	if err := gormDB.Raw("SELECT count(*) FROM pg_stat_activity WHERE datname = current_database()").Scan(&pgc).Error; err == nil && pgc.Valid {
+		connCount = pgc.Int64
+	} else {
+		if sqlDB, err := gormDB.DB(); err == nil {
+			connCount = int64(sqlDB.Stats().OpenConnections)
+		} else {
+			connCount = 1
+		}
+	}
+
+	return DBOverviewResponse{
+		Type:        "postgres",
+		Version:     version,
+		Name:        name,
+		Size:        sizeStr,
+		TableCount:  tableCount,
+		Connections: connCount,
+	}, nil
+}
+
+// GetDBOverview 获取数据库运行概览
+// @Summary 获取数据库运行概览
+// @Description 获取数据库类型、版本、名称、文件大小、表数量及当前连接数，需要管理员权限
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Success 200 {object} response.Any{data=DBOverviewResponse} "获取成功"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 500 {object} response.Any "内部错误"
+// @Router /api/v1/admin/db-manage/overview [get]
+func GetDBOverview(c *gin.Context) {
+	gormDB := db.DB(c.Request.Context())
+	if gormDB == nil {
+		response.AbortInternal(c, "数据库未初始化")
+		return
+	}
+
+	var overview DBOverviewResponse
+	var err error
+
+	if !config.Config.Database.Enabled {
+		overview, err = getSQLiteOverview(gormDB)
+	} else {
+		overview, err = getPostgresOverview(gormDB)
+	}
+
+	if err != nil {
+		response.AbortInternal(c, err.Error())
+		return
+	}
+
+	c.JSON(http.StatusOK, response.OK(overview))
+}
+
+// ListDBTables 获取数据库所有表名
+// @Summary 获取数据库所有表名
+// @Description 返回当前数据库的所有用户自定义表名称列表，需要管理员权限
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Success 200 {object} response.Any{data=[]string} "获取成功"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 500 {object} response.Any "内部错误"
+// @Router /api/v1/admin/db-manage/tables [get]
+func ListDBTables(c *gin.Context) {
+	gormDB := db.DB(c.Request.Context())
+	if gormDB == nil {
+		response.AbortInternal(c, "数据库未初始化")
+		return
+	}
+
+	var tables []string
+	var err error
+
+	if !config.Config.Database.Enabled {
+		err = gormDB.Raw("SELECT name FROM sqlite_master WHERE type='table' AND name NOT LIKE 'sqlite_%' ORDER BY name").Scan(&tables).Error
+	} else {
+		err = gormDB.Raw("SELECT table_name FROM information_schema.tables WHERE table_schema = current_schema() ORDER BY table_name").Scan(&tables).Error
+	}
+
+	if err != nil {
+		response.AbortInternal(c, err.Error())
+		return
+	}
+
+	c.JSON(http.StatusOK, response.OK(tables))
+}
+
+// GetDBTableData 获取数据表 data
+func GetDBTableData(c *gin.Context) {
+	var req GetTableDataRequest
+	if err := c.ShouldBindQuery(&req); err != nil {
+		response.AbortBadRequest(c, err.Error())
+		return
+	}
+
+	gormDB := db.DB(c.Request.Context())
+	if gormDB == nil {
+		response.AbortInternal(c, "数据库未初始化")
+		return
+	}
+
+	// 安全转义表名并拼接
+	quotedTable := `"` + strings.ReplaceAll(req.Table, `"`, `""`) + `"`
+
+	var total int64
+	if err := gormDB.Raw("SELECT count(*) FROM " + quotedTable).Scan(&total).Error; err != nil {
+		response.AbortBadRequest(c, err.Error())
+		return
+	}
+
+	offset := (req.Page - 1) * req.PageSize
+	if offset < 0 {
+		offset = 0
+	}
+	limit := req.PageSize
+	if limit <= 0 {
+		limit = 10
+	}
+
+	rows, err := gormDB.Raw("SELECT * FROM "+quotedTable+" LIMIT ? OFFSET ?", limit, offset).Rows()
+	if err != nil {
+		response.AbortBadRequest(c, err.Error())
+		return
+	}
+	defer func() {
+		_ = rows.Close()
+	}()
+
+	cols, err := rows.Columns()
+	if err != nil {
+		response.AbortInternal(c, err.Error())
+		return
+	}
+
+	results, err := scanTableRows(rows, cols)
+	if err != nil {
+		response.AbortInternal(c, err.Error())
+		return
+	}
+
+	c.JSON(http.StatusOK, response.OK(TableDataResponse{
+		Columns: cols,
+		Total:   total,
+		Results: results,
+	}))
+}
+
+func scanTableRows(rows *sql.Rows, cols []string) ([]map[string]interface{}, error) {
+	results := make([]map[string]interface{}, 0)
+	for rows.Next() {
+		columns := make([]interface{}, len(cols))
+		columnPointers := make([]interface{}, len(cols))
+		for i := range columns {
+			columnPointers[i] = &columns[i]
+		}
+
+		if err := rows.Scan(columnPointers...); err != nil {
+			return nil, err
+		}
+
+		rowMap := make(map[string]interface{})
+		for i, colName := range cols {
+			val := columns[i]
+			if b, ok := val.([]byte); ok {
+				strVal := string(b)
+				runes := []rune(strVal)
+				if len(runes) > maxStringLength {
+					strVal = string(runes[:maxStringLength]) + "..."
+				}
+				rowMap[colName] = strVal
+			} else if str, ok := val.(string); ok {
+				runes := []rune(str)
+				if len(runes) > maxStringLength {
+					str = string(runes[:maxStringLength]) + "..."
+				}
+				rowMap[colName] = str
+			} else {
+				rowMap[colName] = val
+			}
+		}
+		results = append(results, rowMap)
+	}
+	return results, nil
+}
+
+func executeSQLQuery(gormDB *gorm.DB, sqlStr string, startTime time.Time) (ExecuteSQLResponse, error) {
+	rows, err := gormDB.Raw(sqlStr).Rows()
+	if err != nil {
+		return ExecuteSQLResponse{}, err
+	}
+	defer func() {
+		_ = rows.Close()
+	}()
+
+	cols, err := rows.Columns()
+	if err != nil {
+		return ExecuteSQLResponse{}, err
+	}
+
+	results := make([]map[string]interface{}, 0)
+	for rows.Next() {
+		columns := make([]interface{}, len(cols))
+		columnPointers := make([]interface{}, len(cols))
+		for i := range columns {
+			columnPointers[i] = &columns[i]
+		}
+
+		if err := rows.Scan(columnPointers...); err != nil {
+			return ExecuteSQLResponse{}, err
+		}
+
+		rowMap := make(map[string]interface{})
+		for i, colName := range cols {
+			val := columns[i]
+			if b, ok := val.([]byte); ok {
+				rowMap[colName] = string(b)
+			} else {
+				rowMap[colName] = val
+			}
+		}
+		results = append(results, rowMap)
+	}
+
+	executionTime := time.Since(startTime).Milliseconds()
+	return ExecuteSQLResponse{
+		Type:            "select",
+		Columns:         cols,
+		Results:         results,
+		AffectedRows:    int64(len(results)),
+		ExecutionTimeMs: executionTime,
+	}, nil
+}
+
+func executeSQLMutation(gormDB *gorm.DB, sqlStr string, startTime time.Time) (ExecuteSQLResponse, error) {
+	tx := gormDB.Exec(sqlStr)
+	if tx.Error != nil {
+		return ExecuteSQLResponse{}, tx.Error
+	}
+
+	executionTime := time.Since(startTime).Milliseconds()
+	return ExecuteSQLResponse{
+		Type:            "exec",
+		AffectedRows:    tx.RowsAffected,
+		ExecutionTimeMs: executionTime,
+	}, nil
+}
+
+// ExecuteSQL 执行 SQL 查询
+// @Summary 执行 SQL 查询
+// @Description 在当前数据库中执行任意自定义 SQL，如果是查询语句将返回格式化后的列与数据集，否则返回受影响行数，需要管理员权限
+// @Tags admin
+// @Accept json
+// @Produce json
+// @Security SessionCookie
+// @Param request body ExecuteSQLRequest true "SQL 请求参数"
+// @Success 200 {object} response.Any{data=ExecuteSQLResponse} "执行完毕"
+// @Failure 400 {object} response.Any "SQL 语句错误"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 500 {object} response.Any "内部错误"
+// @Router /api/v1/admin/db-manage/query [post]
+func ExecuteSQL(c *gin.Context) {
+	var req ExecuteSQLRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.AbortBadRequest(c, err.Error())
+		return
+	}
+
+	gormDB := db.DB(c.Request.Context())
+	if gormDB == nil {
+		response.AbortInternal(c, "数据库未初始化")
+		return
+	}
+
+	trimmedSQL := strings.TrimSpace(req.SQL)
+	if trimmedSQL == "" {
+		response.AbortBadRequest(c, "SQL 语句不能为空")
+		return
+	}
+
+	startTime := time.Now()
+
+	isQuery := false
+	lowerSQL := strings.ToLower(trimmedSQL)
+	queryKeywords := []string{"select", "show", "explain", "describe", "pragma"}
+	for _, kw := range queryKeywords {
+		if strings.HasPrefix(lowerSQL, kw) {
+			isQuery = true
+			break
+		}
+	}
+
+	var resp ExecuteSQLResponse
+	var err error
+
+	if isQuery {
+		resp, err = executeSQLQuery(gormDB, trimmedSQL, startTime)
+	} else {
+		resp, err = executeSQLMutation(gormDB, trimmedSQL, startTime)
+	}
+
+	if err != nil {
+		response.AbortBadRequest(c, err.Error())
+		return
+	}
+
+	c.JSON(http.StatusOK, response.OK(resp))
+}
+
+func getSQLiteInfo(ctx context.Context) DatabaseInfoResponse {
+	info := DatabaseInfoResponse{
+		Type:    "sqlite",
+		Name:    config.Config.Database.SQLitePath,
+		Version: "SQLite",
+	}
+	if info.Name == "" {
+		info.Name = "./data/wavelet.db"
+	}
+	gormDB := db.DB(ctx)
+	if gormDB == nil {
+		return info
+	}
+	var ver string
+	if err := gormDB.Raw("SELECT sqlite_version()").Scan(&ver).Error; err == nil && ver != "" {
+		info.Version = "SQLite " + ver
+	}
+	return info
+}
+
+func getPostgresInfo(ctx context.Context) DatabaseInfoResponse {
+	info := DatabaseInfoResponse{
+		Type:    "postgres",
+		Name:    config.Config.Database.Database,
+		Version: "PostgreSQL",
+	}
+	gormDB := db.DB(ctx)
+	if gormDB == nil {
+		return info
+	}
+	var ver string
+	if err := gormDB.Raw("SELECT version()").Scan(&ver).Error; err == nil && ver != "" {
+		info.Version = ver
+	}
+	return info
+}
+
+// GetDatabaseInfo 获取当前数据库类型及版本信息
+// @Summary 获取数据库信息
+// @Description 返回当前使用的数据库类型（sqlite/postgres）、名称/路径及版本字符串，需要管理员权限
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Success 200 {object} response.Any{data=DatabaseInfoResponse} "获取成功"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Router /api/v1/admin/db-info [get]
+func GetDatabaseInfo(c *gin.Context) {
+	var info DatabaseInfoResponse
+	if !config.Config.Database.Enabled {
+		info = getSQLiteInfo(c.Request.Context())
+	} else {
+		info = getPostgresInfo(c.Request.Context())
+	}
+	c.JSON(http.StatusOK, response.OK(info))
+}
+
+// ExportDatabase 导出数据库
+// @Summary 导出数据库
+// @Description SQLite 时直接下载 .db 文件；PostgreSQL 时执行 pg_dump 并流式下载 .sql 文件，需要管理员权限
+// @Tags admin
+// @Produce application/octet-stream
+// @Security SessionCookie
+// @Success 200 {file} binary "数据库文件"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 500 {object} response.Any "导出失败"
+// @Router /api/v1/admin/db-export [get]
+func ExportDatabase(c *gin.Context) {
+	if !config.Config.Database.Enabled {
+		exportSQLite(c)
+	} else {
+		exportPostgres(c)
+	}
+}
+
+func exportSQLite(c *gin.Context) {
+	path := config.Config.Database.SQLitePath
+	if path == "" {
+		path = defaultSQLiteDBPath
+	}
+
+	//nolint:gosec // export db file path is trusted
+	f, err := os.Open(path)
+	if err != nil {
+		response.AbortInternal(c, "无法打开数据库文件: "+err.Error())
+		return
+	}
+	defer func() {
+		if closeErr := f.Close(); closeErr != nil {
+			_ = closeErr
+		}
+	}()
+
+	fi, err := f.Stat()
+	if err != nil {
+		response.AbortInternal(c, "无法读取数据库文件信息: "+err.Error())
+		return
+	}
+
+	c.Header("Content-Disposition", `attachment; filename="wavelet.db"`)
+	c.Header("Content-Type", "application/octet-stream")
+	c.Header("Content-Length", fmt.Sprintf("%d", fi.Size()))
+	c.Status(http.StatusOK)
+	http.ServeContent(c.Writer, c.Request, "wavelet.db", fi.ModTime(), f)
+}
+
+func exportPostgres(c *gin.Context) {
+	dbCfg := config.Config.Database
+
+	pgDumpPath, err := exec.LookPath("pg_dump")
+	if err != nil {
+		response.AbortInternal(c, "pg_dump 不可用，请确保服务器已安装 PostgreSQL 客户端工具")
+		return
+	}
+
+	args := []string{
+		"--no-password",
+		"-h", dbCfg.Host,
+		"-p", fmt.Sprintf("%d", dbCfg.Port),
+		"-U", dbCfg.Username,
+		dbCfg.Database,
+	}
+
+	//nolint:gosec // pg_dump args are constructed from validated db config
+	cmd := exec.CommandContext(c.Request.Context(), pgDumpPath, args...)
+	if dbCfg.Password != "" {
+		cmd.Env = append(os.Environ(), "PGPASSWORD="+dbCfg.Password)
+	} else {
+		cmd.Env = os.Environ()
+	}
+
+	fileName := fmt.Sprintf("wavelet_%s.sql", time.Now().Format("20060102_150405"))
+	c.Header("Content-Disposition", `attachment; filename="`+fileName+`"`)
+	c.Header("Content-Type", "application/octet-stream")
+	c.Status(http.StatusOK)
+
+	cmd.Stdout = c.Writer
+	cmd.Stderr = nil
+
+	if err := cmd.Run(); err != nil {
+		log.Printf("[db-export] pg_dump failed: %v\n", err)
+	}
+}

backend/plugins/domain/admin/handlers_logs.go

@@ -0,0 +1,685 @@
+// Copyright 2025 linux.do
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package admin
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/Rain-kl/Wavelet/backend/pkg/config"
+	"github.com/Rain-kl/Wavelet/backend/pkg/logger"
+	"github.com/Rain-kl/Wavelet/backend/pkg/response"
+	"github.com/Rain-kl/Wavelet/backend/pkg/util"
+	"github.com/Rain-kl/Wavelet/backend/plugins/domain/risk_control"
+	"github.com/Rain-kl/Wavelet/backend/plugins/domain/risk_control/logstore"
+	"github.com/Rain-kl/Wavelet/backend/plugins/drivers/driver_asynq_worker"
+	db "github.com/Rain-kl/Wavelet/backend/plugins/infra/database"
+	"github.com/gin-gonic/gin"
+	"github.com/gorilla/websocket"
+)
+
+const (
+	defaultLimit   = 200
+	maxLimit       = 500
+	maxPageSize    = 100
+	hoursInDay     = 24
+	analyticsDays  = 7
+	topActiveLimit = 10
+)
+
+// logsResponse 历史日志查询响应
+type logsResponse struct {
+	Lines      []logger.LogEntry `json:"lines"`
+	HasMore    bool              `json:"has_more"`
+	NextCursor int               `json:"next_cursor"` // 用于加载更早日志的 cursor
+}
+
+// GetLogs 获取历史日志
+// @Summary 获取系统日志
+// @Description 分页获取系统历史日志，cursor=0 获取最新日志，cursor>0 获取更早日志
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Param cursor query int false "日志游标，0=获取最新" default(0)
+// @Param limit query int false "每页条数" default(200)
+// @Success 200 {object} response.Any{data=logsResponse} "日志列表"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Router /api/v1/admin/logs [get]
+func GetLogs(c *gin.Context) {
+	cursorStr := c.DefaultQuery("cursor", "0")
+	limitStr := c.DefaultQuery("limit", "200")
+
+	var cursor, limit int
+	if _, err := parsePositiveInt(cursorStr, &cursor); err != nil {
+		response.AbortWithError(c, http.StatusBadRequest, InvalidCursorParam)
+		return
+	}
+	if _, err := parsePositiveInt(limitStr, &limit); err != nil || limit <= 0 {
+		limit = defaultLimit
+	}
+	if limit > maxLimit {
+		limit = maxLimit
+	}
+
+	entries, hasMore := logger.GlobalRingBuffer.Query(cursor, limit)
+
+	resp := logsResponse{
+		Lines:   entries,
+		HasMore: hasMore,
+	}
+	if len(entries) > 0 {
+		resp.NextCursor = entries[0].Index
+	}
+
+	c.JSON(http.StatusOK, response.OK(resp))
+}
+
+// wsMessage WebSocket 消息格式
+type wsMessage struct {
+	Type string          `json:"type"` // "log" | "error"
+	Data json.RawMessage `json:"data"`
+}
+
+// HandleLogWebSocket WebSocket 端点，实时推送系统日志
+// @Summary 系统日志实时推送
+// @Description 通过 WebSocket 实时推送系统日志，需要管理员权限
+// @Tags admin
+// @Router /api/v1/admin/logs/ws [get]
+func HandleLogWebSocket(c *gin.Context) {
+	upgrader := getUpgrader()
+
+	conn, err := upgrader.Upgrade(c.Writer, c.Request, nil)
+	if err != nil {
+		return
+	}
+	defer func() { _ = conn.Close() }()
+
+	ch := logger.GlobalRingBuffer.Subscribe()
+	defer logger.GlobalRingBuffer.Unsubscribe(ch)
+
+	done := make(chan struct{})
+	util.Go(func() {
+		defer close(done)
+		for {
+			_, _, err := conn.ReadMessage()
+			if err != nil {
+				return
+			}
+		}
+	})
+
+	for {
+		select {
+		case <-done:
+			return
+		case entry, ok := <-ch:
+			if !ok {
+				return
+			}
+			data, _ := json.Marshal(entry)
+			msg := wsMessage{Type: "log", Data: data}
+			payload, _ := json.Marshal(msg)
+			if err := conn.WriteMessage(1, payload); err != nil {
+				return
+			}
+		}
+	}
+}
+
+// accessLogItem 访问日志单条数据
+type accessLogItem struct {
+	ID        uint64 `json:"id,string"`
+	UserID    uint64 `json:"user_id,string"`
+	Username  string `json:"username"`
+	Nickname  string `json:"nickname"`
+	Path      string `json:"path"`
+	Method    string `json:"method"`
+	IP        string `json:"ip"`
+	UserAgent string `json:"user_agent"`
+	Headers   string `json:"headers"`
+	Status    int32  `json:"status"`
+	Latency   int64  `json:"latency"`
+	CreatedAt string `json:"created_at"`
+}
+
+// accessLogsResponse 访问日志查询响应
+type accessLogsResponse struct {
+	Total uint64          `json:"total"`
+	List  []accessLogItem `json:"list"`
+}
+
+func buildAccessLogFilter(ctx context.Context, c *gin.Context) (logstore.AccessLogFilter, error) {
+	filter := logstore.AccessLogFilter{}
+
+	username := c.Query("username")
+	if username != "" {
+		var userIDs []uint64
+		if err := db.DB(ctx).Table("w_users").
+			Where("username LIKE ? ESCAPE '\\'", "%"+util.EscapeLike(username)+"%").
+			Pluck("id", &userIDs).Error; err != nil {
+			return filter, fmt.Errorf("查询用户信息失败: %w", err)
+		}
+		filter.UserIDs = userIDs
+	}
+
+	if path := c.Query("path"); path != "" {
+		filter.Path = path
+	}
+
+	if startTime := c.Query("start_time"); startTime != "" {
+		if t, err := parseAccessLogTime(startTime); err == nil {
+			filter.StartTime = &t
+		}
+	}
+
+	if endTime := c.Query("end_time"); endTime != "" {
+		if t, err := parseAccessLogTime(endTime); err == nil {
+			filter.EndTime = &t
+		}
+	}
+
+	return filter, nil
+}
+
+func parseAccessLogTime(value string) (time.Time, error) {
+	if t, err := time.Parse(time.RFC3339, value); err == nil {
+		return t, nil
+	}
+	return time.Parse("2006-01-02 15:04:05", value)
+}
+
+func enrichAccessLogsWithUsers(ctx context.Context, list []accessLogItem) {
+	if len(list) == 0 {
+		return
+	}
+
+	userIDs := make([]uint64, 0, len(list))
+	seen := make(map[uint64]struct{}, len(list))
+	for _, item := range list {
+		if _, ok := seen[item.UserID]; ok {
+			continue
+		}
+		seen[item.UserID] = struct{}{}
+		userIDs = append(userIDs, item.UserID)
+	}
+
+	userMap := make(map[uint64]struct{ Username, Nickname string })
+	var users []struct {
+		ID       uint64
+		Username string
+		Nickname string
+	}
+	if err := db.DB(ctx).Table("w_users").Where("id IN ?", userIDs).Find(&users).Error; err == nil {
+		for _, u := range users {
+			userMap[u.ID] = struct{ Username, Nickname string }{Username: u.Username, Nickname: u.Nickname}
+		}
+	}
+	for i := range list {
+		if info, ok := userMap[list[i].UserID]; ok {
+			list[i].Username = info.Username
+			list[i].Nickname = info.Nickname
+		}
+	}
+}
+
+// GetAccessLogs 获取 ClickHouse 异步采集的访问日志
+// @Summary 获取用户访问日志
+// @Description 分页并按照用户、接口路径、时间范围等维度检索用户访问日志列表（需要管理员权限）
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Param page query int false "页码" default(1)
+// @Param page_size query int false "每页条数" default(20)
+// @Param username query string false "用户名模糊搜索"
+// @Param path query string false "接口路径模糊搜索"
+// @Param start_time query string false "起始时间（RFC3339 或 YYYY-MM-DD HH:MM:SS）"
+// @Param end_time query string false "结束时间（RFC3339 或 YYYY-MM-DD HH:MM:SS）"
+// @Success 200 {object} response.Any{data=accessLogsResponse} "访问日志列表"
+// @Failure 400 {object} response.Any "参数错误"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 500 {object} response.Any "内部错误"
+// @Router /api/v1/admin/logs/access [get]
+func GetAccessLogs(c *gin.Context) {
+	ctx := c.Request.Context()
+	store, err := logstore.Active(ctx)
+	if err != nil {
+		response.AbortInternal(c, "日志存储初始化失败")
+		return
+	}
+
+	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
+	if page < 1 {
+		page = 1
+	}
+	pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "20"))
+	if pageSize < 1 {
+		pageSize = 20
+	}
+	if pageSize > maxPageSize {
+		pageSize = maxPageSize
+	}
+
+	filter, err := buildAccessLogFilter(ctx, c)
+	if err != nil {
+		response.AbortWithError(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	if filter.UserIDs != nil && len(filter.UserIDs) == 0 {
+		c.JSON(http.StatusOK, response.OK(accessLogsResponse{Total: 0, List: []accessLogItem{}}))
+		return
+	}
+
+	logs, total, err := store.UserAccessLogs.List(ctx, filter, page, pageSize)
+	if err != nil {
+		response.AbortWithError(c, http.StatusInternalServerError, err.Error())
+		return
+	}
+	if total == 0 {
+		c.JSON(http.StatusOK, response.OK(accessLogsResponse{Total: 0, List: []accessLogItem{}}))
+		return
+	}
+
+	list := make([]accessLogItem, len(logs))
+	for i, logItem := range logs {
+		list[i] = accessLogItem{
+			ID:        logItem.ID,
+			UserID:    logItem.UserID,
+			Path:      logItem.Path,
+			Method:    logItem.Method,
+			IP:        logItem.IP,
+			UserAgent: logItem.UserAgent,
+			Headers:   logItem.Headers,
+			Status:    logItem.Status,
+			Latency:   logItem.Latency,
+			CreatedAt: logItem.CreatedAt.Format(time.RFC3339),
+		}
+	}
+	enrichAccessLogsWithUsers(ctx, list)
+
+	c.JSON(http.StatusOK, response.OK(accessLogsResponse{
+		Total: total,
+		List:  list,
+	}))
+}
+
+// trendItem 趋势图数据点
+type trendItem struct {
+	Date  string `json:"date"`
+	Count uint64 `json:"count"`
+}
+
+// browserItem 浏览器占比排行
+type browserItem struct {
+	Browser string `json:"browser"`
+	Count   uint64 `json:"count"`
+}
+
+// topUserItem 活跃用户数据
+type topUserItem struct {
+	UserID   uint64 `json:"user_id,string"`
+	Username string `json:"username"`
+	Nickname string `json:"nickname"`
+	Count    uint64 `json:"count"`
+}
+
+// logsAnalyticsResponse 访问日志数据分析结果
+type logsAnalyticsResponse struct {
+	Trend    []trendItem   `json:"trend"`
+	Browsers []browserItem `json:"browsers"`
+	TopUsers []topUserItem `json:"top_users"`
+}
+
+// GetLogsAnalytics 获取 ClickHouse 访问日志图表聚合指标
+// @Summary 获取访问日志分析数据
+// @Description 聚合统计最近 7 天的每日访问趋势、浏览器分布以及前 10 名最活跃用户排行（需要管理员权限）
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Success 200 {object} response.Any{data=logsAnalyticsResponse} "分析统计数据"
+// @Failure 500 {object} response.Any "内部错误"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Router /api/v1/admin/logs/analytics [get]
+func GetLogsAnalytics(c *gin.Context) {
+	ctx := c.Request.Context()
+	store, err := logstore.Active(ctx)
+	if err != nil {
+		response.AbortInternal(c, "日志存储初始化失败")
+		return
+	}
+
+	startTime := time.Now().AddDate(0, 0, -(analyticsDays - 1)).Truncate(hoursInDay * time.Hour)
+
+	trendPoints, err := store.UserAccessLogs.GetDailyTrend(ctx, analyticsDays)
+	if err != nil {
+		response.AbortWithError(c, http.StatusInternalServerError, "查询访问趋势失败: "+err.Error())
+		return
+	}
+	trendList := make([]trendItem, len(trendPoints))
+	for i, point := range trendPoints {
+		trendList[i] = trendItem{
+			Date:  point.Date,
+			Count: point.Count,
+		}
+	}
+
+	browserPoints, err := store.UserAccessLogs.GetBrowserDistribution(ctx, startTime)
+	if err != nil {
+		response.AbortWithError(c, http.StatusInternalServerError, "查询浏览器分布失败: "+err.Error())
+		return
+	}
+	browserList := make([]browserItem, len(browserPoints))
+	for i, point := range browserPoints {
+		browserList[i] = browserItem{
+			Browser: point.Browser,
+			Count:   point.Count,
+		}
+	}
+
+	topUserPoints, err := store.UserAccessLogs.GetTopActiveUsers(ctx, startTime, topActiveLimit)
+	if err != nil {
+		response.AbortWithError(c, http.StatusInternalServerError, "查询活跃用户失败: "+err.Error())
+		return
+	}
+
+	topUsers := make([]topUserItem, len(topUserPoints))
+	userIDs := make([]uint64, len(topUserPoints))
+	for i, point := range topUserPoints {
+		topUsers[i] = topUserItem{
+			UserID: point.UserID,
+			Count:  point.Count,
+		}
+		userIDs[i] = point.UserID
+	}
+
+	if len(userIDs) > 0 {
+		userProfileMap := make(map[uint64]struct {
+			Username string
+			Nickname string
+		})
+		var users []struct {
+			ID       uint64
+			Username string
+			Nickname string
+		}
+		if errProfile := db.DB(ctx).Table("w_users").Where("id IN ?", userIDs).Find(&users).Error; errProfile == nil {
+			for _, u := range users {
+				userProfileMap[u.ID] = struct {
+					Username string
+					Nickname string
+				}{
+					Username: u.Username,
+					Nickname: u.Nickname,
+				}
+			}
+		}
+		for i := range topUsers {
+			if profile, ok := userProfileMap[topUsers[i].UserID]; ok {
+				topUsers[i].Username = profile.Username
+				topUsers[i].Nickname = profile.Nickname
+			}
+		}
+	}
+
+	c.JSON(http.StatusOK, response.OK(logsAnalyticsResponse{
+		Trend:    trendList,
+		Browsers: browserList,
+		TopUsers: topUsers,
+	}))
+}
+
+func getUpgrader() *websocket.Upgrader {
+	return &websocket.Upgrader{
+		CheckOrigin: func(r *http.Request) bool {
+			origin := r.Header.Get("Origin")
+			if origin == "" {
+				return true
+			}
+
+			// 1. 同源检查 (Same-origin check)
+			u, err := url.Parse(origin)
+			if err == nil && strings.EqualFold(u.Host, r.Host) {
+				return true
+			}
+
+			// 2. 检查配置的允许跨域 Origin (Check allowed origins in system config)
+			ctx := r.Context()
+			if sc, err := GetSystemConfigByKey(ctx, ConfigKeyServerAddress); err == nil && sc.Value != "" {
+				originToCheck := strings.TrimRight(strings.TrimSpace(origin), "/")
+				allowedOrigins := strings.Split(sc.Value, ",")
+				for _, allowed := range allowedOrigins {
+					allowed = strings.TrimRight(strings.TrimSpace(allowed), "/")
+					if allowed != "" && strings.EqualFold(allowed, originToCheck) {
+						return true
+					}
+				}
+			}
+			return false
+		},
+	}
+}
+
+func parsePositiveInt(s string, result *int) (bool, error) {
+	if s == "" {
+		*result = 0
+		return true, nil
+	}
+	n, err := strconv.Atoi(s)
+	if err != nil || n < 0 {
+		return false, err
+	}
+	*result = n
+	return true, nil
+}
+
+// Log DB Switch Task
+const (
+	// LogDBSwitchTask 切换日志数据库任务标识。
+	LogDBSwitchTask = "logs:db_switch"
+	// TaskTypeLogDBSwitch 管理端任务类型。
+	TaskTypeLogDBSwitch = "logs_db_switch"
+
+	copyBatchSize    = 1000
+	targetPostgres   = "postgres"
+	targetSQLite     = "sqlite"
+	targetClickHouse = "clickhouse"
+)
+
+// LogDBSwitchMeta 描述切换日志数据库任务。
+var LogDBSwitchMeta = driver_asynq_worker.TaskMeta{
+	Type:         TaskTypeLogDBSwitch,
+	AsynqTask:    LogDBSwitchTask,
+	Name:         "切换日志数据库",
+	Description:  "复制迁移用户访问日志并在成功后切换日志主库（期间禁止日志写入）",
+	SupportsTime: false,
+	MaxRetry:     driver_asynq_worker.DefaultMaxRetry,
+	Queue:        driver_asynq_worker.QueueDefault,
+	Retryable:    true,
+	Params: []driver_asynq_worker.TaskParam{
+		{Name: "target", Label: "目标日志库", Type: "string", Required: true,
+			Placeholder: "postgres|sqlite|clickhouse", Description: "迁移目标：postgres（主库为 PG 时）、sqlite（主库为 SQLite 时）或 clickhouse"},
+	},
+}
+
+type logDBSwitchPayload struct {
+	Target string `json:"target"`
+}
+
+// LogDBSwitchHandler 切换日志数据库任务处理器。
+type LogDBSwitchHandler struct{}
+
+// ValidatePayload 校验并规范化参数。
+func (h *LogDBSwitchHandler) ValidatePayload(payload []byte) ([]byte, error) {
+	var p logDBSwitchPayload
+	if err := json.Unmarshal(payload, &p); err != nil {
+		return nil, fmt.Errorf("参数解析失败: %w", err)
+	}
+	p.Target = normalizeTarget(p.Target)
+	if !validTarget(p.Target) {
+		return nil, fmt.Errorf("目标日志库不合法: %s", p.Target)
+	}
+	out, err := json.Marshal(p)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func normalizeTarget(v string) string {
+	switch v {
+	case targetPostgres, "postgresql":
+		return targetPostgres
+	case targetSQLite, "sqlite3":
+		return targetSQLite
+	case targetClickHouse, "ch":
+		return targetClickHouse
+	}
+	return v
+}
+
+func validTarget(v string) bool {
+	return v == targetPostgres || v == targetSQLite || v == targetClickHouse
+}
+
+// Execute 执行迁移。
+func (h *LogDBSwitchHandler) Execute(ctx context.Context, payload []byte) (*driver_asynq_worker.TaskResult, error) {
+	var p logDBSwitchPayload
+	if err := json.Unmarshal(payload, &p); err != nil {
+		return nil, fmt.Errorf("参数解析失败: %w", err)
+	}
+	p.Target = normalizeTarget(p.Target)
+	if err := validateSwitch(ctx, p.Target); err != nil {
+		return nil, err
+	}
+
+	source, err := currentLogDatabase(ctx)
+	if err != nil {
+		driver_asynq_worker.AppendLog(ctx, "读取日志主库失败: %v", err)
+		return nil, err
+	}
+	driver_asynq_worker.AppendLog(ctx, "开始切换日志数据库：%s -> %s", source, p.Target)
+
+	if err := setMigrationFlag(ctx, "migrating"); err != nil {
+		return nil, err
+	}
+	defer func() {
+		if err := setMigrationFlag(ctx, ""); err != nil {
+			logger.ErrorF(ctx, "清除日志迁移冻结标记失败: %v", err)
+		}
+	}()
+
+	if err := risk_control.Drain(ctx); err != nil {
+		return nil, fmt.Errorf("排空日志写入队列失败: %w", err)
+	}
+
+	src, err := logstore.Active(ctx)
+	if err != nil {
+		return nil, err
+	}
+	dst, err := logstore.BuildForMigration(ctx, p.Target)
+	if err != nil {
+		return nil, err
+	}
+
+	if _, err := dst.UserAccessLogs.DeleteAll(ctx); err != nil {
+		return nil, fmt.Errorf("清空目标用户访问日志失败: %w", err)
+	}
+	from, to, err := src.UserAccessLogs.MigrationRange(ctx)
+	if err != nil {
+		return nil, fmt.Errorf("读取源库时间范围失败: %w", err)
+	}
+	if !from.IsZero() && !to.IsZero() {
+		if err := dst.UserAccessLogs.EnsurePartitions(ctx, from, to); err != nil {
+			return nil, fmt.Errorf("预建目标分区失败: %w", err)
+		}
+	}
+
+	if err := copyUserAccessLogs(ctx, src, dst); err != nil {
+		return nil, err
+	}
+	if err := flipLogDatabase(ctx, p.Target); err != nil {
+		return nil, err
+	}
+	logstore.InvalidateCache()
+	driver_asynq_worker.AppendLog(ctx, "日志数据库已切换为 %s，写入恢复", p.Target)
+	return &driver_asynq_worker.TaskResult{Message: fmt.Sprintf("日志数据库已从 %s 切换为 %s", source, p.Target)}, nil
+}
+
+func validateSwitch(ctx context.Context, target string) error {
+	source, err := currentLogDatabase(ctx)
+	if err != nil {
+		return err
+	}
+	if source == target {
+		return errors.New("目标日志库与当前日志库相同，无需迁移")
+	}
+	switch target {
+	case targetClickHouse:
+		if !config.Config.ClickHouse.Enabled {
+			return errors.New("ClickHouse 未启用，无法迁移到 ClickHouse")
+		}
+	case targetPostgres:
+		if !config.Config.Database.Enabled {
+			return errors.New("PostgreSQL 未启用（当前主库为 SQLite），无法迁移到 PostgreSQL")
+		}
+	case targetSQLite:
+		if config.Config.Database.Enabled {
+			return errors.New("当前主库为 PostgreSQL，日志库不能设置为 SQLite")
+		}
+	}
+	return nil
+}
+
+func currentLogDatabase(ctx context.Context) (string, error) {
+	cfg, err := GetSystemConfigByKey(ctx, ConfigKeyLogDatabase)
+	if err != nil {
+		return "", fmt.Errorf("读取日志主库失败: %w", err)
+	}
+	if cfg.Value == "" {
+		return "", errors.New("日志主库配置为空")
+	}
+	return cfg.Value, nil
+}
+
+func setMigrationFlag(ctx context.Context, v string) error {
+	return SaveOrUpdateSystemConfig(ctx, ConfigKeyLogDBMigration, v)
+}
+
+func flipLogDatabase(ctx context.Context, target string) error {
+	return SaveOrUpdateSystemConfig(ctx, ConfigKeyLogDatabase, target)
+}
+
+func copyUserAccessLogs(ctx context.Context, src, dst *logstore.Store) error {
+	var afterID uint64
+	var copied int
+	for {
+		rows, err := src.UserAccessLogs.ListForMigration(ctx, afterID, copyBatchSize)
+		if err != nil {
+			return fmt.Errorf("读取源用户访问日志失败: %w", err)
+		}
+		if len(rows) == 0 {
+			break
+		}
+		if err := dst.UserAccessLogs.BatchInsert(ctx, rows); err != nil {
+			return fmt.Errorf("写入目标用户访问日志失败: %w", err)
+		}
+		afterID = rows[len(rows)-1].ID
+		copied += len(rows)
+		driver_asynq_worker.AppendLog(ctx, "已复制用户访问日志 %d 条", copied)
+		if len(rows) < copyBatchSize {
+			break
+		}
+	}
+	return nil
+}

backend/plugins/domain/admin/handlers_status.go

@@ -0,0 +1,234 @@
+// Copyright 2025 linux.do
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package admin
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"math"
+	"net/http"
+	"runtime"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"gorm.io/gorm"
+
+	"github.com/Rain-kl/Wavelet/backend/pkg/config"
+	"github.com/Rain-kl/Wavelet/backend/pkg/logger"
+	"github.com/Rain-kl/Wavelet/backend/pkg/response"
+	"github.com/Rain-kl/Wavelet/backend/plugins/domain/risk_control/logstore"
+)
+
+var startTime = time.Now()
+
+const (
+	minutesInHour   = 60
+	secondsInMinute = 60
+	nanosPerSecond  = 1e9
+
+	logDBNamePostgres       = "postgres"
+	logDBNameSQLite         = "sqlite"
+	logDBNameClickHouse     = "clickhouse"
+	defaultLogRetentionDays = 30
+)
+
+// SystemStatusResponse 系统状态响应结构体
+type SystemStatusResponse struct {
+	Uptime       string `json:"uptime"`
+	NumGoroutine int    `json:"num_goroutine"`
+	Alloc        string `json:"alloc"`
+	TotalAlloc   string `json:"total_alloc"`
+	Sys          string `json:"sys"`
+	Lookups      uint64 `json:"lookups"`
+	Mallocs      uint64 `json:"mallocs"`
+	Frees        uint64 `json:"frees"`
+	HeapAlloc    string `json:"heap_alloc"`
+	HeapSys      string `json:"heap_sys"`
+	HeapIdle     string `json:"heap_idle"`
+	HeapInuse    string `json:"heap_inuse"`
+	HeapReleased string `json:"heap_released"`
+	HeapObjects  uint64 `json:"heap_objects"`
+	StackInuse   string `json:"stack_inuse"`
+	StackSys     string `json:"stack_sys"`
+	MSpanInuse   string `json:"mspan_inuse"`
+	MSpanSys     string `json:"mspan_sys"`
+	MCacheInuse  string `json:"mcache_inuse"`
+	MCacheSys    string `json:"mcache_sys"`
+	BuckHashSys  string `json:"buck_hash_sys"`
+	GCSys        string `json:"gc_sys"`
+	OtherSys     string `json:"other_sys"`
+	NextGC       string `json:"next_gc"`
+	LastGCTime   string `json:"last_gc_time"`
+	PauseTotalNs string `json:"pause_total_ns"`
+	LastPause    string `json:"last_pause"`
+	NumGC        uint32 `json:"num_gc"`
+}
+
+func formatDuration(d time.Duration) string {
+	days := int(d.Hours()) / hoursInDay
+	hours := int(d.Hours()) % hoursInDay
+	minutes := int(d.Minutes()) % minutesInHour
+	seconds := int(d.Seconds()) % secondsInMinute
+
+	var res string
+	if days > 0 {
+		res += fmt.Sprintf("%d天", days)
+	}
+	if hours > 0 {
+		res += fmt.Sprintf("%d小时", hours)
+	}
+	if minutes > 0 {
+		res += fmt.Sprintf("%d分钟", minutes)
+	}
+	if seconds > 0 || res == "" {
+		res += fmt.Sprintf("%d秒钟", seconds)
+	}
+	return res
+}
+
+// GetSystemStatus 获取系统状态信息
+// @Summary 获取系统状态信息
+// @Description 获取后端服务运行状态、Goroutine、内存指标等详细统计数据，需要管理员权限
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Success 200 {object} response.Any{data=SystemStatusResponse} "获取成功"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Router /api/v1/admin/status [get]
+func GetSystemStatus(c *gin.Context) {
+	var m runtime.MemStats
+	runtime.ReadMemStats(&m)
+
+	uptime := formatDuration(time.Since(startTime))
+	numGoroutine := runtime.NumGoroutine()
+
+	var lastGCTime string
+	switch {
+	case m.LastGC > 0 && m.LastGC <= math.MaxInt64:
+		lastGCTime = formatDuration(time.Since(time.Unix(0, int64(m.LastGC))))
+	case m.LastGC > 0:
+		lastGCTime = "未知"
+	default:
+		lastGCTime = "无"
+	}
+
+	var lastPause string
+	if m.NumGC > 0 {
+		lastPause = fmt.Sprintf("%.3fs", float64(m.PauseNs[(m.NumGC-1)%256])/nanosPerSecond)
+	} else {
+		lastPause = "0.000s"
+	}
+
+	res := SystemStatusResponse{
+		Uptime:       uptime,
+		NumGoroutine: numGoroutine,
+		Alloc:        formatBytes(m.Alloc),
+		TotalAlloc:   formatBytes(m.TotalAlloc),
+		Sys:          formatBytes(m.Sys),
+		Lookups:      m.Lookups,
+		Mallocs:      m.Mallocs,
+		Frees:        m.Frees,
+		HeapAlloc:    formatBytes(m.HeapAlloc),
+		HeapSys:      formatBytes(m.HeapSys),
+		HeapIdle:     formatBytes(m.HeapIdle),
+		HeapInuse:    formatBytes(m.HeapInuse),
+		HeapReleased: formatBytes(m.HeapReleased),
+		HeapObjects:  m.HeapObjects,
+		StackInuse:   formatBytes(m.StackInuse),
+		StackSys:     formatBytes(m.StackSys),
+		MSpanInuse:   formatBytes(m.MSpanInuse),
+		MSpanSys:     formatBytes(m.MSpanSys),
+		MCacheInuse:  formatBytes(m.MCacheInuse),
+		MCacheSys:    formatBytes(m.MCacheSys),
+		BuckHashSys:  formatBytes(m.BuckHashSys),
+		GCSys:        formatBytes(m.GCSys),
+		OtherSys:     formatBytes(m.OtherSys),
+		NextGC:       formatBytes(m.NextGC),
+		LastGCTime:   lastGCTime,
+		PauseTotalNs: fmt.Sprintf("%.1fs", float64(m.PauseTotalNs)/nanosPerSecond),
+		LastPause:    lastPause,
+		NumGC:        m.NumGC,
+	}
+
+	c.JSON(http.StatusOK, response.OK(res))
+}
+
+// LogDatabaseStatus 日志库状态。
+type LogDatabaseStatus struct {
+	ActiveDatabase   string         `json:"active_database"`
+	Migration        string         `json:"migration"`
+	RetentionDays    map[string]int `json:"retention_days"`
+	AvailableTargets []string       `json:"available_targets"`
+}
+
+// GetLogDatabaseStatus 返回当前日志库状态。
+// @Summary 获取日志数据库状态
+// @Description 返回当前日志主库、迁移状态、各库保留天数与合法迁移目标，需要管理员权限
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Success 200 {object} response.Any{data=LogDatabaseStatus} "获取成功"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 500 {object} response.Any "内部错误"
+// @Router /api/v1/admin/status/log-database [get]
+func GetLogDatabaseStatus(c *gin.Context) {
+	ctx := c.Request.Context()
+	store, err := logstore.Active(ctx)
+	if err != nil {
+		logger.ErrorF(ctx, "获取日志存储实例失败: %v", err)
+		response.AbortInternal(c, "日志存储初始化失败")
+		return
+	}
+	activeDB, err := store.Status.ActiveDatabase(ctx)
+	if err != nil {
+		logger.ErrorF(ctx, "获取日志库状态失败: %v", err)
+		response.AbortInternal(c, "获取日志库状态失败")
+		return
+	}
+	migration := "idle"
+	if logstore.Migrating(ctx) {
+		migration = "migrating"
+	}
+	c.JSON(http.StatusOK, response.OK(LogDatabaseStatus{
+		ActiveDatabase: activeDB,
+		Migration:      migration,
+		RetentionDays: map[string]int{
+			logDBNamePostgres:   retentionOr(ctx, ConfigKeyLogRetentionDaysPostgres),
+			logDBNameSQLite:     retentionOr(ctx, ConfigKeyLogRetentionDaysSQLite),
+			logDBNameClickHouse: retentionOr(ctx, ConfigKeyLogRetentionDaysClickHouse),
+		},
+		AvailableTargets: availableLogTargets(activeDB),
+	}))
+}
+
+func retentionOr(ctx context.Context, key string) int {
+	v, err := GetIntByKey(ctx, key)
+	if err != nil {
+		if !errors.Is(err, gorm.ErrRecordNotFound) {
+			logger.ErrorF(ctx, "读取日志保留天数配置失败 key=%s: %v", key, err)
+		}
+		return defaultLogRetentionDays
+	}
+	if v < 1 {
+		return defaultLogRetentionDays
+	}
+	return v
+}
+
+func availableLogTargets(active string) []string {
+	if active == logDBNameClickHouse {
+		if config.Config.Database.Enabled {
+			return []string{logDBNamePostgres}
+		}
+		return []string{logDBNameSQLite}
+	}
+	if config.Config.ClickHouse.Enabled {
+		return []string{logDBNameClickHouse}
+	}
+	return []string{}
+}

backend/plugins/domain/admin/handlers_tasks.go

@@ -0,0 +1,413 @@
+// Copyright 2025 linux.do
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package admin
+
+import (
+	"fmt"
+	"net/http"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"github.com/robfig/cron/v3"
+
+	"github.com/Rain-kl/Wavelet/backend/pkg/logger"
+	"github.com/Rain-kl/Wavelet/backend/pkg/response"
+	"github.com/Rain-kl/Wavelet/backend/plugins/drivers/driver_asynq_cron"
+	"github.com/Rain-kl/Wavelet/backend/plugins/drivers/driver_asynq_worker"
+)
+
+// ListTaskTypes 获取支持的任务类型列表
+// @Summary 获取支持的任务类型
+// @Description 返回系统支持的所有可调度任务类型列表，包括任务名称、描述、是否支持时间范围等元数据，需要管理员权限
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Success 200 {object} response.Any{data=[]driver_asynq_worker.TaskMeta} "任务类型列表"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Router /api/v1/admin/tasks/types [get]
+func ListTaskTypes(c *gin.Context) {
+	c.JSON(http.StatusOK, response.OK(driver_asynq_worker.GetDispatchableTasks()))
+}
+
+// DispatchTaskRequest 下发任务请求
+type DispatchTaskRequest struct {
+	TaskType  string     `json:"task_type" binding:"required"`
+	StartTime *time.Time `json:"start_time"`
+	EndTime   *time.Time `json:"end_time"`
+	UserID    *uint64    `json:"user_id"`
+	Payload   string     `json:"payload"`
+}
+
+// DispatchTask 下发任务
+// @Summary 下发异步任务
+// @Description 手动触发指定类型的异步任务，支持指定时间范围和用户，需要管理员权限
+// @Tags admin
+// @Accept json
+// @Produce json
+// @Security SessionCookie
+// @Param request body DispatchTaskRequest true "任务请求参数"
+// @Success 200 {object} response.Any{data=string} "任务已入队"
+// @Failure 400 {object} response.Any "任务类型不存在或参数错误"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 500 {object} response.Any "任务入队失败"
+// @Router /api/v1/admin/tasks/dispatch [post]
+func DispatchTask(c *gin.Context) {
+	var req DispatchTaskRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.AbortBadRequest(c, err.Error())
+		return
+	}
+
+	meta := driver_asynq_worker.GetTaskMeta(req.TaskType)
+	if meta == nil {
+		response.AbortBadRequest(c, InvalidTaskType)
+		return
+	}
+
+	var payloadBytes []byte
+	if strings.TrimSpace(req.Payload) != "" {
+		payloadBytes = []byte(req.Payload)
+	}
+
+	validated, err := driver_asynq_worker.ValidateAndNormalizePayload(meta.AsynqTask, payloadBytes)
+	if err != nil {
+		response.AbortBadRequest(c, err.Error())
+		return
+	}
+
+	taskID, err := driver_asynq_worker.DispatchTask(c.Request.Context(), req.TaskType, validated, "manual")
+	if err != nil {
+		response.AbortInternal(c, fmt.Sprintf("%s: %v", TaskDispatchFailed, err))
+		return
+	}
+
+	c.JSON(http.StatusOK, response.OK(taskID))
+}
+
+// ListTaskExecutions 查询任务执行记录列表
+// @Summary 查询任务执行记录
+// @Description 分页查询任务执行记录，支持按状态和任务类型筛选，需要管理员权限
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Param status query string false "状态筛选 (pending/running/succeeded/failed)"
+// @Param task_type query string false "任务类型筛选"
+// @Param page query int false "页码" default(1)
+// @Param page_size query int false "每页条数" default(20)
+// @Success 200 {object} response.Any{data=object} "任务执行记录列表"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Router /api/v1/admin/tasks/executions [get]
+func ListTaskExecutions(c *gin.Context) {
+	var req ListTaskExecutionsRequest
+	if err := c.ShouldBindQuery(&req); err != nil {
+		response.AbortBadRequest(c, err.Error())
+		return
+	}
+
+	if req.TaskType != "" {
+		if meta := driver_asynq_worker.GetTaskMeta(req.TaskType); meta != nil {
+			req.TaskType = meta.AsynqTask
+		}
+	}
+
+	executions, total, err := ListTaskExecutionRecords(c.Request.Context(), req)
+	if err != nil {
+		response.AbortInternal(c, err.Error())
+		return
+	}
+
+	c.JSON(http.StatusOK, response.OK(gin.H{
+		"items":     executions,
+		"total":     total,
+		"page":      req.Page,
+		"page_size": req.PageSize,
+	}))
+}
+
+// GetTaskExecution 查询单条任务执行详情
+// @Summary 查询任务执行详情
+// @Description 根据 ID 查询任务执行记录详情，包含完整执行日志，需要管理员权限
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Param id path int true "任务执行记录 ID"
+// @Success 200 {object} response.Any{data=TaskExecution} "任务执行详情"
+// @Failure 400 {object} response.Any "参数错误"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 404 {object} response.Any "记录不存在"
+// @Router /api/v1/admin/tasks/executions/{id} [get]
+func GetTaskExecution(c *gin.Context) {
+	id, err := strconv.ParseUint(c.Param("id"), 10, 64)
+	if err != nil {
+		response.AbortBadRequest(c, InvalidTaskExecutionID)
+		return
+	}
+
+	execution, err := GetTaskExecutionByID(c.Request.Context(), id)
+	if err != nil {
+		response.AbortNotFound(c, TaskNotFound)
+		return
+	}
+
+	c.JSON(http.StatusOK, response.OK(execution))
+}
+
+// RetryTask 重试失败的任务
+// @Summary 重试失败任务
+// @Description 重新下发一条失败的任务，创建新的执行记录，需要管理员权限
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Param id path int true "任务执行记录 ID"
+// @Success 200 {object} response.Any{data=string} "新任务的 TaskID"
+// @Failure 400 {object} response.Any "任务不支持重试或参数错误"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 404 {object} response.Any "记录不存在"
+// @Failure 500 {object} response.Any "重试失败"
+// @Router /api/v1/admin/tasks/executions/{id}/retry [post]
+func RetryTask(c *gin.Context) {
+	id, err := strconv.ParseUint(c.Param("id"), 10, 64)
+	if err != nil {
+		response.AbortBadRequest(c, InvalidTaskExecutionID)
+		return
+	}
+
+	newTaskID, err := driver_asynq_worker.RetryTask(c.Request.Context(), id)
+	if err != nil {
+		errMsg := err.Error()
+		switch {
+		case strings.Contains(errMsg, "不存在"):
+			response.AbortNotFound(c, errMsg)
+		case strings.Contains(errMsg, "只有失败的任务") || strings.Contains(errMsg, "不支持重试") || strings.Contains(errMsg, "已达到最大重试"):
+			response.AbortBadRequest(c, errMsg)
+		default:
+			response.AbortInternal(c, fmt.Sprintf("%s: %v", TaskRetryFailed, err))
+		}
+		return
+	}
+
+	c.JSON(http.StatusOK, response.OK(newTaskID))
+}
+
+// ListSchedules 获取定时任务列表
+// @Summary 获取定时任务列表
+// @Description 返回系统所有的定时任务配置列表，包括名称、关联的异步任务类型、Cron 表达式和启用状态，需要管理员权限
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Success 200 {object} response.Any{data=[]Schedule} "定时任务列表"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Router /api/v1/admin/tasks/schedules [get]
+func ListSchedules(c *gin.Context) {
+	schedules, err := ListSchedulesRecord(c.Request.Context())
+	if err != nil {
+		response.AbortInternal(c, err.Error())
+		return
+	}
+	c.JSON(http.StatusOK, response.OK(schedules))
+}
+
+// CreateScheduleRequest 创建定时任务请求
+type CreateScheduleRequest struct {
+	Name     string `json:"name" binding:"required"`
+	TaskType string `json:"task_type" binding:"required"`
+	Cron     string `json:"cron" binding:"required"`
+	Payload  string `json:"payload"`
+	IsActive *bool  `json:"is_active" binding:"required"`
+}
+
+// CreateSchedule 创建定时任务
+// @Summary 创建定时任务
+// @Description 新增一个动态定时任务配置，关联已有的异步任务，配置 Cron 表达式和执行参数，并触发调度器热加载，需要管理员权限
+// @Tags admin
+// @Accept json
+// @Produce json
+// @Security SessionCookie
+// @Param request body CreateScheduleRequest true "创建定时任务请求参数"
+// @Success 200 {object} response.Any{data=Schedule} "创建成功的定时任务信息"
+// @Failure 400 {object} response.Any "Cron 表达式无效、异步任务类型不存在或参数错误"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 500 {object} response.Any "保存定时任务失败"
+// @Router /api/v1/admin/tasks/schedules [post]
+func CreateSchedule(c *gin.Context) {
+	var req CreateScheduleRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.AbortBadRequest(c, err.Error())
+		return
+	}
+
+	// 校验 Cron 表达式
+	if _, err := cron.ParseStandard(req.Cron); err != nil {
+		response.AbortBadRequest(c, InvalidCronExpression)
+		return
+	}
+
+	// 校验关联的异步任务类型
+	meta := driver_asynq_worker.GetTaskMeta(req.TaskType)
+	if meta == nil {
+		response.AbortBadRequest(c, InvalidTaskType)
+		return
+	}
+
+	// 校验并规范化 Payload
+	var payloadBytes []byte
+	if strings.TrimSpace(req.Payload) != "" {
+		payloadBytes = []byte(req.Payload)
+	}
+	validated, err := driver_asynq_worker.ValidateAndNormalizePayload(meta.AsynqTask, payloadBytes)
+	if err != nil {
+		response.AbortBadRequest(c, err.Error())
+		return
+	}
+
+	schedule := &Schedule{
+		Name:     req.Name,
+		TaskType: req.TaskType,
+		Cron:     req.Cron,
+		Payload:  string(validated),
+		IsActive: *req.IsActive,
+	}
+
+	if err := CreateScheduleRecord(c.Request.Context(), schedule); err != nil {
+		response.AbortInternal(c, fmt.Sprintf("%s: %v", ScheduleSaveFailed, err))
+		return
+	}
+
+	// 触发调度服务重载
+	if err := driver_asynq_cron.ReloadScheduler(); err != nil {
+		logger.ErrorF(c.Request.Context(), "[TaskAdmin] 重载调度器失败: %v", err)
+	}
+
+	c.JSON(http.StatusOK, response.OK(schedule))
+}
+
+// UpdateScheduleRequest 修改定时任务请求
+type UpdateScheduleRequest struct {
+	Name     string `json:"name" binding:"required"`
+	TaskType string `json:"task_type" binding:"required"`
+	Cron     string `json:"cron" binding:"required"`
+	Payload  string `json:"payload"`
+	IsActive *bool  `json:"is_active" binding:"required"`
+}
+
+// UpdateSchedule 修改定时任务
+// @Summary 修改定时任务
+// @Description 修改一个定时任务的配置（名称、Cron 表达式、异步任务参数和是否启用等），并触发调度器热加载，需要管理员权限
+// @Tags admin
+// @Accept json
+// @Produce json
+// @Security SessionCookie
+// @Param id path int true "定时任务 ID"
+// @Param request body UpdateScheduleRequest true "修改定时任务请求参数"
+// @Success 200 {object} response.Any{data=Schedule} "修改后的定时任务信息"
+// @Failure 400 {object} response.Any "Cron 表达式无效、参数错误"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 404 {object} response.Any "定时任务不存在"
+// @Failure 500 {object} response.Any "修改定时任务失败"
+// @Router /api/v1/admin/tasks/schedules/{id} [put]
+func UpdateSchedule(c *gin.Context) {
+	id, err := strconv.ParseUint(c.Param("id"), 10, 64)
+	if err != nil {
+		response.AbortBadRequest(c, "无效的定时任务ID")
+		return
+	}
+
+	var req UpdateScheduleRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.AbortBadRequest(c, err.Error())
+		return
+	}
+
+	schedule, err := GetScheduleByID(c.Request.Context(), id)
+	if err != nil {
+		response.AbortNotFound(c, ScheduleNotFound)
+		return
+	}
+
+	// 校验 Cron 表达式
+	if _, err := cron.ParseStandard(req.Cron); err != nil {
+		response.AbortBadRequest(c, InvalidCronExpression)
+		return
+	}
+
+	// 校验关联的异步任务类型
+	meta := driver_asynq_worker.GetTaskMeta(req.TaskType)
+	if meta == nil {
+		response.AbortBadRequest(c, InvalidTaskType)
+		return
+	}
+
+	// 校验并规范化 Payload
+	var payloadBytes []byte
+	if strings.TrimSpace(req.Payload) != "" {
+		payloadBytes = []byte(req.Payload)
+	}
+	validated, err := driver_asynq_worker.ValidateAndNormalizePayload(meta.AsynqTask, payloadBytes)
+	if err != nil {
+		response.AbortBadRequest(c, err.Error())
+		return
+	}
+
+	schedule.Name = req.Name
+	schedule.TaskType = req.TaskType
+	schedule.Cron = req.Cron
+	schedule.Payload = string(validated)
+	schedule.IsActive = *req.IsActive
+
+	if err := UpdateScheduleRecord(c.Request.Context(), schedule); err != nil {
+		response.AbortInternal(c, fmt.Sprintf("%s: %v", ScheduleSaveFailed, err))
+		return
+	}
+
+	// 触发调度服务重载
+	if err := driver_asynq_cron.ReloadScheduler(); err != nil {
+		logger.ErrorF(c.Request.Context(), "[TaskAdmin] 重载调度器失败: %v", err)
+	}
+
+	c.JSON(http.StatusOK, response.OK(schedule))
+}
+
+// DeleteSchedule 删除定时任务
+// @Summary 删除定时任务
+// @Description 删除指定的定时任务配置，并触发调度器热加载，需要管理员权限
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Param id path int true "定时任务 ID"
+// @Success 200 {object} response.Any{data=string} "删除结果"
+// @Failure 400 {object} response.Any "参数错误"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 500 {object} response.Any "删除定时任务失败"
+// @Router /api/v1/admin/tasks/schedules/{id} [delete]
+func DeleteSchedule(c *gin.Context) {
+	id, err := strconv.ParseUint(c.Param("id"), 10, 64)
+	if err != nil {
+		response.AbortBadRequest(c, "无效的定时任务ID")
+		return
+	}
+
+	if err := DeleteScheduleRecord(c.Request.Context(), id); err != nil {
+		response.AbortInternal(c, fmt.Sprintf("%s: %v", ScheduleDeleteFailed, err))
+		return
+	}
+
+	// 触发调度服务重载
+	if err := driver_asynq_cron.ReloadScheduler(); err != nil {
+		logger.ErrorF(c.Request.Context(), "[TaskAdmin] 重载调度器失败: %v", err)
+	}
+
+	c.JSON(http.StatusOK, response.OKNil())
+}

backend/plugins/domain/admin/handlers_templates.go

@@ -0,0 +1,243 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package admin
+
+import (
+	"context"
+	"errors"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"gorm.io/gorm"
+
+	"github.com/Rain-kl/Wavelet/backend/pkg/response"
+)
+
+// CreateTemplateRequest 创建模板请求
+type CreateTemplateRequest struct {
+	Key         string `json:"key" binding:"required,max=80"`
+	Name        string `json:"name" binding:"required,max=100"`
+	Type        string `json:"type" binding:"required,max=20"`
+	Subject     string `json:"subject" binding:"max=255"`
+	Content     string `json:"content" binding:"required"`
+	Description string `json:"description" binding:"max=255"`
+}
+
+// UpdateTemplateRequest 更新模板请求
+type UpdateTemplateRequest struct {
+	Name        string `json:"name" binding:"required,max=100"`
+	Type        string `json:"type" binding:"required,max=20"`
+	Subject     string `json:"subject" binding:"max=255"`
+	Content     string `json:"content" binding:"required"`
+	Description string `json:"description" binding:"max=255"`
+}
+
+func abortTemplateLogicError(c *gin.Context, err error) bool {
+	if err == nil {
+		return false
+	}
+	if errors.Is(err, gorm.ErrRecordNotFound) {
+		response.AbortNotFound(c, TemplateNotFound)
+		return true
+	}
+	msg := err.Error()
+	switch msg {
+	case TemplateKeyExists, SystemTemplateCannotDelete:
+		response.AbortBadRequest(c, msg)
+		return true
+	}
+	response.AbortInternal(c, msg)
+	return true
+}
+
+// CreateTemplate 创建模板
+// @Summary 创建模板
+// @Description 创建一条新的自定义通知模板，模板标识符（Key）不可重复，需要管理员权限
+// @Tags admin
+// @Accept json
+// @Produce json
+// @Security SessionCookie
+// @Param request body CreateTemplateRequest true "创建请求参数"
+// @Success 200 {object} response.Any{data=string} "创建成功"
+// @Failure 400 {object} response.Any "参数错误或模板标识符已存在"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 500 {object} response.Any "内部错误"
+// @Router /api/v1/admin/templates [post]
+func CreateTemplate(c *gin.Context) {
+	var req CreateTemplateRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.AbortBadRequest(c, err.Error())
+		return
+	}
+
+	tmpl, err := createTemplate(c.Request.Context(), req)
+	if abortTemplateLogicError(c, err) {
+		return
+	}
+
+	c.JSON(http.StatusOK, response.OK(tmpl))
+}
+
+// ListTemplates 获取模板列表
+// @Summary 获取模板列表
+// @Description 返回所有通知模板列表，需要管理员权限
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Success 200 {object} response.Any{data=[]Template} "模板列表"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 500 {object} response.Any "内部错误"
+// @Router /api/v1/admin/templates [get]
+func ListTemplates(c *gin.Context) {
+	templates, err := listTemplates(c.Request.Context())
+	if err != nil {
+		response.AbortInternal(c, err.Error())
+		return
+	}
+
+	c.JSON(http.StatusOK, response.OK(templates))
+}
+
+// GetTemplate 获取单个模板
+// @Summary 获取单个模板
+// @Description 根据模板标识符获取对应的模板详情，需要管理员权限
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Param key path string true "模板标识符"
+// @Success 200 {object} response.Any{data=Template} "模板详情"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 404 {object} response.Any "模板不存在"
+// @Failure 500 {object} response.Any "内部错误"
+// @Router /api/v1/admin/templates/{key} [get]
+func GetTemplate(c *gin.Context) {
+	tmpl, err := getTemplate(c.Request.Context(), c.Param("key"))
+	if abortTemplateLogicError(c, err) {
+		return
+	}
+
+	c.JSON(http.StatusOK, response.OK(tmpl))
+}
+
+// UpdateTemplate 更新模板
+// @Summary 更新模板
+// @Description 根据模板标识符更新对应的模板内容，需要管理员权限
+// @Tags admin
+// @Accept json
+// @Produce json
+// @Security SessionCookie
+// @Param key path string true "模板标识符"
+// @Param request body UpdateTemplateRequest true "更新请求参数"
+// @Success 200 {object} response.Any{data=Template} "更新成功"
+// @Failure 400 {object} response.Any "参数错误"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 404 {object} response.Any "模板不存在"
+// @Failure 500 {object} response.Any "内部错误"
+// @Router /api/v1/admin/templates/{key} [put]
+func UpdateTemplate(c *gin.Context) {
+	var req UpdateTemplateRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.AbortBadRequest(c, err.Error())
+		return
+	}
+
+	tmpl, err := updateTemplate(c.Request.Context(), c.Param("key"), req)
+	if abortTemplateLogicError(c, err) {
+		return
+	}
+
+	c.JSON(http.StatusOK, response.OK(tmpl))
+}
+
+// DeleteTemplate 删除模板
+// @Summary 删除模板
+// @Description 根据模板标识符删除对应模板，系统预置模板不可删除，需要管理员权限
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Param key path string true "模板标识符"
+// @Success 200 {object} response.Any{data=string} "删除成功"
+// @Failure 400 {object} response.Any "不可删除系统模板"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 404 {object} response.Any "模板不存在"
+// @Failure 500 {object} response.Any "内部错误"
+// @Router /api/v1/admin/templates/{key} [delete]
+func DeleteTemplate(c *gin.Context) {
+	if err := deleteTemplate(c.Request.Context(), c.Param("key")); abortTemplateLogicError(c, err) {
+		return
+	}
+
+	c.JSON(http.StatusOK, response.OKNil())
+}
+
+func createTemplate(ctx context.Context, req CreateTemplateRequest) (Template, error) {
+	exists, err := TemplateExistsByKey(ctx, req.Key)
+	if err != nil {
+		return Template{}, err
+	}
+	if exists {
+		return Template{}, errors.New(TemplateKeyExists)
+	}
+
+	tmpl := Template{
+		Key:         req.Key,
+		Name:        req.Name,
+		Type:        req.Type,
+		Subject:     req.Subject,
+		Content:     req.Content,
+		Description: req.Description,
+		IsSystem:    false,
+	}
+	if err := tmpl.Validate(); err != nil {
+		return Template{}, err
+	}
+	if err := CreateTemplateRecord(ctx, &tmpl); err != nil {
+		return Template{}, err
+	}
+	return tmpl, nil
+}
+
+func listTemplates(ctx context.Context) ([]Template, error) {
+	return ListTemplatesRecord(ctx)
+}
+
+func getTemplate(ctx context.Context, key string) (Template, error) {
+	return GetTemplateByKey(ctx, key)
+}
+
+func updateTemplate(ctx context.Context, key string, req UpdateTemplateRequest) (Template, error) {
+	tmpl, err := GetTemplateByKey(ctx, key)
+	if err != nil {
+		return Template{}, err
+	}
+
+	tmpl.Name = req.Name
+	tmpl.Type = req.Type
+	tmpl.Subject = req.Subject
+	tmpl.Content = req.Content
+	tmpl.Description = req.Description
+	if err := tmpl.Validate(); err != nil {
+		return Template{}, err
+	}
+	if err := SaveTemplateRecord(ctx, &tmpl); err != nil {
+		return Template{}, err
+	}
+	return tmpl, nil
+}
+
+func deleteTemplate(ctx context.Context, key string) error {
+	tmpl, err := GetTemplateByKey(ctx, key)
+	if err != nil {
+		return err
+	}
+	if tmpl.IsSystem {
+		return errors.New(SystemTemplateCannotDelete)
+	}
+	return DeleteTemplateRecord(ctx, &tmpl)
+}

backend/plugins/domain/admin/handlers_updater.go

@@ -0,0 +1,695 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package admin
+
+import (
+	"archive/tar"
+	"archive/zip"
+	"compress/gzip"
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"os"
+	"path/filepath"
+	"runtime"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"golang.org/x/mod/semver"
+
+	"github.com/Rain-kl/Wavelet/backend/pkg/buildinfo"
+	"github.com/Rain-kl/Wavelet/backend/pkg/logger"
+	"github.com/Rain-kl/Wavelet/backend/pkg/response"
+	"github.com/Rain-kl/Wavelet/backend/pkg/util"
+)
+
+const (
+	githubAPIBaseURL = "https://api.github.com"
+	maxArchiveSize   = int64(1024 * 1024 * 1024)
+	maxReleaseSize   = int64(4 * 1024 * 1024)
+	repositoryParts  = 2
+	windowsOS        = "windows"
+	archiveFileMode  = 0o600
+	stagedBinaryMode = 0o700
+)
+
+type releaseAsset struct {
+	Name               string `json:"name"`
+	BrowserDownloadURL string `json:"browser_download_url"`
+	Size               int64  `json:"size"`
+	State              string `json:"state"`
+}
+
+type githubRelease struct {
+	TagName    string         `json:"tag_name"`
+	Name       string         `json:"name"`
+	Body       string         `json:"body"`
+	HTMLURL    string         `json:"html_url"`
+	Draft      bool           `json:"draft"`
+	Prerelease bool           `json:"prerelease"`
+	Published  time.Time      `json:"published_at"`
+	Assets     []releaseAsset `json:"assets"`
+}
+
+// UpdaterStatus describes the current build and the newest compatible upstream release.
+type UpdaterStatus struct {
+	CurrentVersion     string `json:"current_version"`
+	BuildTime          string `json:"build_time"`
+	LatestVersion      string `json:"latest_version"`
+	UpdateAvailable    bool   `json:"update_available"`
+	CanUpgrade         bool   `json:"can_upgrade"`
+	Prerelease         bool   `json:"prerelease"`
+	ReleaseName        string `json:"release_name"`
+	ReleaseNotes       string `json:"release_notes"`
+	ReleaseURL         string `json:"release_url"`
+	PublishedAt        string `json:"published_at"`
+	UpstreamRepository string `json:"upstream_repository"`
+	AssetName          string `json:"asset_name"`
+	Platform           string `json:"platform"`
+}
+
+type releaseClient interface {
+	Do(req *http.Request) (*http.Response, error)
+}
+
+type updaterManager struct {
+	client    releaseClient
+	mu        sync.Mutex
+	upgrading bool
+}
+
+var defaultUpdaterManager = &updaterManager{
+	client: &http.Client{Timeout: 10 * time.Minute},
+}
+
+// GetUpdateStatus 获取应用更新状态
+// @Summary 获取应用更新状态
+// @Description 从系统配置指定的 GitHub 上游仓库查询最新兼容 Release，并与当前服务版本比较
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Success 200 {object} response.Any{data=UpdaterStatus} "更新状态"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 500 {object} response.Any "查询失败"
+// @Router /api/v1/admin/update [get]
+func GetUpdateStatus(c *gin.Context) {
+	status, _, err := defaultUpdaterManager.status(c.Request.Context())
+	if err != nil {
+		logger.ErrorF(c.Request.Context(), "[Updater] check release failed: %v", err)
+		response.AbortInternal(c, err.Error())
+		return
+	}
+	c.JSON(http.StatusOK, response.OK(status))
+}
+
+// ApplyUpdate 下载并应用应用更新
+// @Summary 下载并应用应用更新
+// @Description 下载当前平台对应的 GitHub Actions Release 资产，替换当前二进制并重启进程
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Success 200 {object} response.Any "升级已准备并即将重启"
+// @Failure 400 {object} response.Any "当前版本不可升级"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 500 {object} response.Any "升级准备失败"
+// @Router /api/v1/admin/update/apply [post]
+func ApplyUpdate(c *gin.Context) {
+	executable, stagedBinary, err := defaultUpdaterManager.prepareUpgrade(c.Request.Context())
+	if err != nil {
+		logger.ErrorF(c.Request.Context(), "[Updater] prepare upgrade failed: %v", err)
+		response.AbortBadRequest(c, err.Error())
+		return
+	}
+
+	logger.InfoF(c.Request.Context(), "[Updater] upgrade prepared; restarting with %s", stagedBinary)
+	c.JSON(http.StatusOK, response.OKNil())
+
+	util.Go(func() {
+		time.Sleep(time.Second)
+		if err := replaceAndRestart(executable, stagedBinary); err != nil {
+			defaultUpdaterManager.finishUpgrade()
+			logger.ErrorF(context.Background(), "[Updater] replace and restart failed: %v", err)
+		}
+	})
+}
+
+func normalizeVersion(version string) string {
+	version = strings.TrimSpace(version)
+	if version == "" || version == "dev" {
+		return ""
+	}
+	if !strings.HasPrefix(version, "v") {
+		version = "v" + version
+	}
+	if !semver.IsValid(version) {
+		return ""
+	}
+	return version
+}
+
+func parseRepository(raw string) (string, error) {
+	raw = strings.TrimSpace(raw)
+	if raw == "" {
+		return "", errors.New(errInvalidRepository)
+	}
+
+	if !strings.Contains(raw, "://") {
+		repo := strings.TrimSuffix(strings.Trim(raw, "/"), ".git")
+		if len(strings.Split(repo, "/")) == repositoryParts {
+			return repo, nil
+		}
+		return "", errors.New(errInvalidRepository)
+	}
+
+	parsed, err := url.Parse(raw)
+	if err != nil || !strings.EqualFold(parsed.Hostname(), "github.com") {
+		return "", errors.New(errInvalidRepository)
+	}
+	repo := strings.TrimSuffix(strings.Trim(parsed.Path, "/"), ".git")
+	if len(strings.Split(repo, "/")) != repositoryParts {
+		return "", errors.New(errInvalidRepository)
+	}
+	return repo, nil
+}
+
+func expectedAssetName(tag string) string {
+	extension := "tar.gz"
+	if runtime.GOOS == windowsOS {
+		extension = "zip"
+	}
+	return fmt.Sprintf("wavelet_%s_%s_%s.%s", tag, runtime.GOOS, runtime.GOARCH, extension)
+}
+
+func expectedAssetNames(repository, tag string) []string {
+	names := []string{expectedAssetName(tag)}
+	if parts := strings.Split(repository, "/"); len(parts) == repositoryParts {
+		repoName := parts[1]
+		if repoName != "wavelet" {
+			extension := "tar.gz"
+			if runtime.GOOS == windowsOS {
+				extension = "zip"
+			}
+			names = append(names, fmt.Sprintf("%s_%s_%s_%s.%s", repoName, tag, runtime.GOOS, runtime.GOARCH, extension))
+		}
+	}
+	return names
+}
+
+func selectLatestRelease(repository string, releases []githubRelease) (githubRelease, releaseAsset, error) {
+	var selected githubRelease
+	var selectedAsset releaseAsset
+	selectedVersion := ""
+
+	for _, release := range releases {
+		version := normalizeVersion(release.TagName)
+		if release.Draft || version == "" {
+			continue
+		}
+		expectedNames := expectedAssetNames(repository, release.TagName)
+		for _, asset := range release.Assets {
+			matched := false
+			for _, name := range expectedNames {
+				if asset.Name == name {
+					matched = true
+					break
+				}
+			}
+			if !matched || asset.BrowserDownloadURL == "" || asset.State != "uploaded" {
+				continue
+			}
+			if selectedVersion == "" || semver.Compare(version, selectedVersion) > 0 {
+				selected = release
+				selectedAsset = asset
+				selectedVersion = version
+			}
+		}
+	}
+
+	if selectedVersion == "" {
+		return githubRelease{}, releaseAsset{}, errors.New(errNoCompatibleRelease)
+	}
+	return selected, selectedAsset, nil
+}
+
+func (m *updaterManager) fetchRelease(ctx context.Context, repository string) (githubRelease, releaseAsset, error) {
+	req, err := http.NewRequestWithContext(
+		ctx,
+		http.MethodGet,
+		fmt.Sprintf("%s/repos/%s/releases?per_page=30", githubAPIBaseURL, repository),
+		nil,
+	)
+	if err != nil {
+		return githubRelease{}, releaseAsset{}, fmt.Errorf("%s: %w", errReleaseRequestFailed, err)
+	}
+	req.Header.Set("Accept", "application/vnd.github+json")
+	req.Header.Set("User-Agent", "Wavelet-Updater")
+	req.Header.Set("X-GitHub-Api-Version", "2022-11-28")
+
+	resp, err := m.client.Do(req)
+	if err != nil {
+		return githubRelease{}, releaseAsset{}, fmt.Errorf("%s: %w", errReleaseRequestFailed, err)
+	}
+	defer func() {
+		_ = resp.Body.Close()
+	}()
+	if resp.StatusCode != http.StatusOK {
+		return githubRelease{}, releaseAsset{}, fmt.Errorf("%s: HTTP %d", errReleaseRequestFailed, resp.StatusCode)
+	}
+
+	var releases []githubRelease
+	decoder := json.NewDecoder(io.LimitReader(resp.Body, maxReleaseSize))
+	if err := decoder.Decode(&releases); err != nil {
+		return githubRelease{}, releaseAsset{}, fmt.Errorf("%s: %w", errReleaseResponseInvalid, err)
+	}
+
+	release, asset, err := selectLatestRelease(repository, releases)
+	if err != nil {
+		return githubRelease{}, releaseAsset{}, err
+	}
+	logger.InfoF(ctx, "[Updater] Selected latest compatible release: %s (Asset: %s)", release.TagName, asset.Name)
+	return release, asset, nil
+}
+
+func loadRepository(ctx context.Context) (string, error) {
+	config, err := GetSystemConfigByKey(ctx, ConfigKeyUpdateUpstreamRepository)
+	if err != nil {
+		return "", fmt.Errorf("%s: %w", errInvalidRepository, err)
+	}
+	return parseRepository(config.Value)
+}
+
+func (m *updaterManager) status(ctx context.Context) (UpdaterStatus, releaseAsset, error) {
+	upstreamRepo, err := loadRepository(ctx)
+	if err != nil {
+		return UpdaterStatus{}, releaseAsset{}, err
+	}
+	release, asset, err := m.fetchRelease(ctx, upstreamRepo)
+	if err != nil {
+		return UpdaterStatus{}, releaseAsset{}, err
+	}
+
+	currentVersion := normalizeVersion(buildinfo.Version)
+	latestVersion := normalizeVersion(release.TagName)
+	updateAvailable := currentVersion != "" && semver.Compare(latestVersion, currentVersion) > 0
+
+	logger.InfoF(ctx, "[Updater] Check update complete. current: %s, latest: %s, update_available: %t", buildinfo.Version, release.TagName, updateAvailable)
+
+	return UpdaterStatus{
+		CurrentVersion:     buildinfo.Version,
+		BuildTime:          buildinfo.BuildTime,
+		LatestVersion:      release.TagName,
+		UpdateAvailable:    updateAvailable,
+		CanUpgrade:         updateAvailable && runtime.GOOS != windowsOS,
+		Prerelease:         release.Prerelease,
+		ReleaseName:        release.Name,
+		ReleaseNotes:       release.Body,
+		ReleaseURL:         release.HTMLURL,
+		PublishedAt:        release.Published.Format(time.RFC3339),
+		UpstreamRepository: upstreamRepo,
+		AssetName:          asset.Name,
+		Platform:           runtime.GOOS + "/" + runtime.GOARCH,
+	}, asset, nil
+}
+
+func downloadArchive(ctx context.Context, client releaseClient, asset releaseAsset, destination string) error {
+	if asset.Size <= 0 || asset.Size > maxArchiveSize {
+		return fmt.Errorf("release 资产大小无效: %d", asset.Size)
+	}
+	logger.InfoF(ctx, "[Updater] Downloading release asset: %s", asset.Name)
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, asset.BrowserDownloadURL, nil)
+	if err != nil {
+		return fmt.Errorf("创建升级下载请求失败: %w", err)
+	}
+	req.Header.Set("User-Agent", "Wavelet-Updater")
+
+	resp, err := client.Do(req)
+	if err != nil {
+		return fmt.Errorf("下载升级资产失败: %w", err)
+	}
+	defer func() {
+		_ = resp.Body.Close()
+	}()
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("下载升级资产失败: HTTP %d", resp.StatusCode)
+	}
+
+	//nolint:gosec // updater download destination is validated
+	file, err := os.OpenFile(destination, os.O_CREATE|os.O_EXCL|os.O_WRONLY, archiveFileMode)
+	if err != nil {
+		return fmt.Errorf("创建升级归档失败: %w", err)
+	}
+
+	written, err := io.Copy(file, io.LimitReader(resp.Body, maxArchiveSize+1))
+	if err != nil {
+		_ = file.Close()
+		return fmt.Errorf("写入升级归档失败: %w", err)
+	}
+	if err := file.Close(); err != nil {
+		return fmt.Errorf("关闭升级归档失败: %w", err)
+	}
+	if written > maxArchiveSize || written != asset.Size {
+		return fmt.Errorf("升级归档大小不匹配: got %d, want %d", written, asset.Size)
+	}
+	logger.InfoF(ctx, "[Updater] Successfully downloaded release asset to %s", destination)
+	return nil
+}
+
+func safeArchivePath(destination, name string) (string, error) {
+	cleanName := filepath.Clean(name)
+	if filepath.IsAbs(cleanName) || cleanName == "." || strings.HasPrefix(cleanName, ".."+string(filepath.Separator)) {
+		return "", fmt.Errorf("归档包含非法路径: %s", name)
+	}
+	target := filepath.Join(destination, cleanName)
+	relative, err := filepath.Rel(destination, target)
+	if err != nil || relative == ".." || strings.HasPrefix(relative, ".."+string(filepath.Separator)) {
+		return "", fmt.Errorf("归档路径越界: %s", name)
+	}
+	return target, nil
+}
+
+func matchBinaryName(name string, candidates []string) bool {
+	for _, candidate := range candidates {
+		if runtime.GOOS == windowsOS {
+			if strings.EqualFold(name, candidate) {
+				return true
+			}
+		} else {
+			if name == candidate {
+				return true
+			}
+		}
+	}
+	return false
+}
+
+func getCandidateBinaryNames(executable string, repository string) []string {
+	execName := filepath.Base(executable)
+	names := []string{execName}
+
+	addName := func(base string) {
+		name := base
+		if runtime.GOOS == windowsOS && !strings.HasSuffix(strings.ToLower(name), ".exe") {
+			name += ".exe"
+		}
+		for _, existing := range names {
+			if existing == name {
+				return
+			}
+		}
+		names = append(names, name)
+	}
+
+	if parts := strings.Split(repository, "/"); len(parts) == repositoryParts {
+		addName(parts[1])
+	}
+	addName("wavelet")
+
+	return names
+}
+
+func isLikelyBinary(name string, isDir bool, mode os.FileMode) bool {
+	if isDir {
+		return false
+	}
+	base := strings.ToLower(filepath.Base(name))
+
+	exclusions := []string{
+		"license", "licence", "copying", "notice", "readme", "changelog",
+	}
+	for _, excl := range exclusions {
+		if strings.HasPrefix(base, excl) {
+			return false
+		}
+	}
+
+	if runtime.GOOS == windowsOS {
+		return filepath.Ext(base) == ".exe"
+	}
+
+	return (mode.Perm()&0111 != 0) || (filepath.Ext(base) == "")
+}
+
+func findBinaryInTarGz(archivePath string, candidates []string) (string, error) {
+	//nolint:gosec // updater archivePath is verified
+	file, err := os.Open(archivePath)
+	if err != nil {
+		return "", err
+	}
+	defer func() {
+		_ = file.Close()
+	}()
+
+	gzipReader, err := gzip.NewReader(file)
+	if err != nil {
+		return "", err
+	}
+	defer func() {
+		_ = gzipReader.Close()
+	}()
+
+	reader := tar.NewReader(gzipReader)
+	var binaries []string
+	for {
+		header, err := reader.Next()
+		if errors.Is(err, io.EOF) {
+			break
+		}
+		if err != nil {
+			return "", err
+		}
+		if header.Typeflag == tar.TypeReg && isLikelyBinary(header.Name, false, header.FileInfo().Mode()) {
+			binaries = append(binaries, header.Name)
+		}
+	}
+
+	if len(binaries) == 1 {
+		return binaries[0], nil
+	}
+
+	for _, name := range binaries {
+		if matchBinaryName(filepath.Base(name), candidates) {
+			return name, nil
+		}
+	}
+
+	return "", errors.New(errNoCompatibleAsset)
+}
+
+func findBinaryInZip(archivePath string, candidates []string) (string, error) {
+	reader, err := zip.OpenReader(archivePath)
+	if err != nil {
+		return "", err
+	}
+	defer func() {
+		_ = reader.Close()
+	}()
+
+	var binaries []string
+	for _, file := range reader.File {
+		if !file.FileInfo().IsDir() && isLikelyBinary(file.Name, false, file.FileInfo().Mode()) {
+			binaries = append(binaries, file.Name)
+		}
+	}
+
+	if len(binaries) == 1 {
+		return binaries[0], nil
+	}
+
+	for _, name := range binaries {
+		if matchBinaryName(filepath.Base(name), candidates) {
+			return name, nil
+		}
+	}
+
+	return "", errors.New(errNoCompatibleAsset)
+}
+
+func extractTarGz(ctx context.Context, archivePath, destination, targetName string, candidates []string) (string, error) {
+	binaryPathInArchive, err := findBinaryInTarGz(archivePath, candidates)
+	if err != nil {
+		return "", err
+	}
+
+	logger.InfoF(ctx, "[Updater] Extracting tar.gz archive: %s (extracting: %s)", archivePath, binaryPathInArchive)
+	//nolint:gosec // updater archivePath is verified
+	file, err := os.Open(archivePath)
+	if err != nil {
+		return "", err
+	}
+	defer func() {
+		_ = file.Close()
+	}()
+	gzipReader, err := gzip.NewReader(file)
+	if err != nil {
+		return "", err
+	}
+	defer func() {
+		_ = gzipReader.Close()
+	}()
+
+	reader := tar.NewReader(gzipReader)
+	for {
+		header, err := reader.Next()
+		if errors.Is(err, io.EOF) {
+			break
+		}
+		if err != nil {
+			return "", err
+		}
+		if header.Name != binaryPathInArchive {
+			continue
+		}
+		target, err := safeArchivePath(destination, targetName)
+		if err != nil {
+			return "", err
+		}
+		//nolint:gosec // updater destination is sanitized
+		output, err := os.OpenFile(target, os.O_CREATE|os.O_EXCL|os.O_WRONLY, stagedBinaryMode)
+		if err != nil {
+			return "", err
+		}
+		written, copyErr := io.Copy(output, io.LimitReader(reader, maxArchiveSize+1))
+		closeErr := output.Close()
+		if copyErr != nil {
+			return "", copyErr
+		}
+		if closeErr != nil {
+			return "", closeErr
+		}
+		if written > maxArchiveSize {
+			return "", errors.New("解压后的程序文件超过大小限制")
+		}
+		logger.InfoF(ctx, "[Updater] Successfully extracted binary to %s", target)
+		return target, nil
+	}
+	return "", errors.New(errNoCompatibleAsset)
+}
+
+func extractZip(ctx context.Context, archivePath, destination, targetName string, candidates []string) (string, error) {
+	binaryPathInArchive, err := findBinaryInZip(archivePath, candidates)
+	if err != nil {
+		return "", err
+	}
+
+	logger.InfoF(ctx, "[Updater] Extracting zip archive: %s (extracting: %s)", archivePath, binaryPathInArchive)
+	reader, err := zip.OpenReader(archivePath)
+	if err != nil {
+		return "", err
+	}
+	defer func() {
+		_ = reader.Close()
+	}()
+	for _, file := range reader.File {
+		if file.Name != binaryPathInArchive {
+			continue
+		}
+		target, err := safeArchivePath(destination, targetName)
+		if err != nil {
+			return "", err
+		}
+		input, err := file.Open()
+		if err != nil {
+			return "", err
+		}
+		//nolint:gosec // updater extraction target is safe
+		output, err := os.OpenFile(target, os.O_CREATE|os.O_EXCL|os.O_WRONLY, stagedBinaryMode)
+		if err != nil {
+			return "", err
+		}
+		written, copyErr := io.Copy(output, io.LimitReader(input, maxArchiveSize+1))
+		inputCloseErr := input.Close()
+		outputCloseErr := output.Close()
+		if copyErr != nil {
+			return "", copyErr
+		}
+		if inputCloseErr != nil {
+			return "", inputCloseErr
+		}
+		if outputCloseErr != nil {
+			return "", outputCloseErr
+		}
+		if written > maxArchiveSize {
+			return "", errors.New("解压后的程序文件超过大小限制")
+		}
+		logger.InfoF(ctx, "[Updater] Successfully extracted binary to %s", target)
+		return target, nil
+	}
+	return "", errors.New(errNoCompatibleAsset)
+}
+
+func (m *updaterManager) prepareUpgrade(ctx context.Context) (string, string, error) {
+	if runtime.GOOS == windowsOS {
+		return "", "", errors.New(errAutomaticUpgradeBlocked)
+	}
+	if normalizeVersion(buildinfo.Version) == "" {
+		return "", "", errors.New(errDevelopmentBuild)
+	}
+
+	m.mu.Lock()
+	defer m.mu.Unlock()
+	if m.upgrading {
+		return "", "", errors.New(errUpgradeAlreadyRunning)
+	}
+
+	status, asset, err := m.status(ctx)
+	if err != nil {
+		return "", "", err
+	}
+	if !status.UpdateAvailable {
+		return "", "", errors.New(errAlreadyUpToDate)
+	}
+
+	logger.InfoF(ctx, "[Updater] Preparing upgrade. current: %s, latest: %s", status.CurrentVersion, status.LatestVersion)
+
+	executable, err := os.Executable()
+	if err != nil {
+		return "", "", fmt.Errorf("定位当前程序失败: %w", err)
+	}
+	executable, err = filepath.EvalSymlinks(executable)
+	if err != nil {
+		return "", "", fmt.Errorf("解析当前程序路径失败: %w", err)
+	}
+
+	tempDir, err := os.MkdirTemp(filepath.Dir(executable), ".wavelet-update-*")
+	if err != nil {
+		return "", "", fmt.Errorf("创建升级目录失败: %w", err)
+	}
+
+	archivePath := filepath.Join(tempDir, asset.Name)
+	if err := downloadArchive(ctx, m.client, asset, archivePath); err != nil {
+		_ = os.RemoveAll(tempDir)
+		return "", "", err
+	}
+
+	targetName := filepath.Base(executable)
+	candidates := getCandidateBinaryNames(executable, status.UpstreamRepository)
+
+	var stagedBinary string
+	if strings.HasSuffix(asset.Name, ".zip") {
+		stagedBinary, err = extractZip(ctx, archivePath, tempDir, targetName, candidates)
+	} else {
+		stagedBinary, err = extractTarGz(ctx, archivePath, tempDir, targetName, candidates)
+	}
+	if err != nil {
+		_ = os.RemoveAll(tempDir)
+		return "", "", fmt.Errorf("解压升级资产失败: %w", err)
+	}
+	logger.InfoF(ctx, "[Updater] Staged binary successfully prepared: %s", stagedBinary)
+	m.upgrading = true
+	return executable, stagedBinary, nil
+}
+
+func (m *updaterManager) finishUpgrade() {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+	m.upgrading = false
+}

backend/plugins/domain/admin/handlers_user.go

@@ -0,0 +1,615 @@
+// Copyright 2025 linux.do
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package admin
+
+import (
+	"context"
+	"errors"
+	"net/http"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"gorm.io/gorm"
+
+	"github.com/Rain-kl/Wavelet/backend/core/contracts"
+	"github.com/Rain-kl/Wavelet/backend/pkg/idgen"
+	"github.com/Rain-kl/Wavelet/backend/pkg/logger"
+	"github.com/Rain-kl/Wavelet/backend/pkg/response"
+	"github.com/Rain-kl/Wavelet/backend/pkg/util"
+	"github.com/Rain-kl/Wavelet/backend/plugins/domain/auth"
+	db "github.com/Rain-kl/Wavelet/backend/plugins/infra/database"
+)
+
+const minPasswordLength = 8
+
+// listUsersRequest 用户列表查询请求
+type listUsersRequest struct {
+	Page     int     `form:"page" binding:"min=1"`
+	PageSize int     `form:"page_size" binding:"min=1,max=100"`
+	UserID   *uint64 `form:"user_id" binding:"omitempty,gt=0"`
+	Username string  `form:"username"`
+	Email    string  `form:"email"`
+}
+
+type userResponse struct {
+	ID          uint64    `json:"id,string"`
+	Username    string    `json:"username"`
+	Nickname    string    `json:"nickname"`
+	Email       string    `json:"email"`
+	AvatarURL   string    `json:"avatar_url"`
+	IsActive    bool      `json:"is_active"`
+	IsAdmin     bool      `json:"is_admin"`
+	Bio         string    `json:"bio"`
+	Phone       string    `json:"phone"`
+	Gender      string    `json:"gender"`
+	Website     string    `json:"website"`
+	Location    string    `json:"location"`
+	LastLoginAt time.Time `json:"last_login_at"`
+	CreatedAt   time.Time `json:"created_at"`
+	UpdatedAt   time.Time `json:"updated_at"`
+}
+
+// listUsersResponse 用户列表响应
+type listUsersResponse struct {
+	Users []userResponse `json:"users"`
+	Total int64          `json:"total"`
+}
+
+func parseUserID(c *gin.Context) (uint64, bool) {
+	id, err := strconv.ParseUint(c.Param("id"), 10, 64)
+	if err != nil || id == 0 {
+		response.AbortBadRequest(c, userNotFound)
+		return 0, false
+	}
+	return id, true
+}
+
+func toUserResponse(u *contracts.UserDTO) userResponse {
+	if u == nil {
+		return userResponse{}
+	}
+	return userResponse{
+		ID:          u.ID,
+		Username:    u.Username,
+		Nickname:    u.Nickname,
+		Email:       u.Email,
+		AvatarURL:   u.AvatarURL,
+		IsActive:    u.IsActive,
+		IsAdmin:     u.IsAdmin,
+		Bio:         u.Bio,
+		Phone:       u.Phone,
+		Gender:      u.Gender,
+		Website:     u.Website,
+		Location:    u.Location,
+		LastLoginAt: u.LastLoginAt,
+		CreatedAt:   u.CreatedAt,
+		UpdatedAt:   u.UpdatedAt,
+	}
+}
+
+func abortUserLogicError(c *gin.Context, err error, notFoundMsg string, forbiddenMsgs, badRequestMsgs []string) bool {
+	if err == nil {
+		return false
+	}
+	if errors.Is(err, gorm.ErrRecordNotFound) {
+		response.AbortNotFound(c, notFoundMsg)
+		return true
+	}
+	msg := err.Error()
+	for _, m := range badRequestMsgs {
+		if msg == m {
+			response.AbortBadRequest(c, msg)
+			return true
+		}
+	}
+	for _, m := range forbiddenMsgs {
+		if msg == m {
+			response.AbortForbidden(c, msg)
+			return true
+		}
+	}
+	logger.ErrorF(c.Request.Context(), "Admin user error: %v", err)
+	response.AbortInternal(c, "内部服务器错误")
+	return true
+}
+
+// ListUsers 获取用户列表
+// @Summary 获取用户列表
+// @Description 分页返回用户列表，支持按用户 ID 和用户名筛选，需要管理员权限
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Param request query listUsersRequest true "查询参数"
+// @Success 200 {object} response.Any{data=listUsersResponse} "用户列表"
+// @Failure 400 {object} response.Any "参数错误"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 500 {object} response.Any "内部错误"
+// @Router /api/v1/admin/users [get]
+func ListUsers(c *gin.Context) {
+	var req listUsersRequest
+	if err := c.ShouldBindQuery(&req); err != nil {
+		response.AbortBadRequest(c, err.Error())
+		return
+	}
+
+	total, dtos, err := listUsers(c.Request.Context(), req)
+	if err != nil {
+		logger.ErrorF(c.Request.Context(), "List admin users failed: %v", err)
+		response.AbortInternal(c, "获取用户列表失败")
+		return
+	}
+
+	users := make([]userResponse, 0, len(dtos))
+	for _, dto := range dtos {
+		users = append(users, toUserResponse(dto))
+	}
+
+	c.JSON(http.StatusOK, response.OK(listUsersResponse{
+		Users: users,
+		Total: total,
+	}))
+}
+
+// GetUser 获取用户详情
+// @Summary 获取用户详情
+// @Description 返回指定用户的完整个人资料和系统状态，需要管理员权限，不返回密码等敏感字段
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Param id path int true "用户 ID"
+// @Success 200 {object} response.Any{data=userResponse} "用户详情"
+// @Failure 400 {object} response.Any "参数错误"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 404 {object} response.Any "用户不存在"
+// @Failure 500 {object} response.Any "内部错误"
+// @Router /api/v1/admin/users/{id} [get]
+func GetUser(c *gin.Context) {
+	id, ok := parseUserID(c)
+	if !ok {
+		return
+	}
+
+	targetUser, err := getUserDetail(c.Request.Context(), id)
+	if abortUserLogicError(c, err, userNotFound, nil, nil) {
+		return
+	}
+
+	c.JSON(http.StatusOK, response.OK(toUserResponse(targetUser)))
+}
+
+// updateUserStatusRequest 更新用户状态请求
+type updateUserStatusRequest struct {
+	IsActive bool `json:"is_active"`
+}
+
+// UpdateUserStatus 更新用户状态（启用/禁用）
+// @Summary 更新用户状态
+// @Description 启用或禁用指定用户，管理员账号无法被禁用，需要管理员权限
+// @Tags admin
+// @Accept json
+// @Produce json
+// @Security SessionCookie
+// @Param id path int true "用户 ID"
+// @Param request body updateUserStatusRequest true "状态参数"
+// @Success 200 {object} response.Any{data=string} "更新成功"
+// @Failure 400 {object} response.Any "参数错误"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限或尝试禁用管理员"
+// @Failure 404 {object} response.Any "用户不存在"
+// @Failure 500 {object} response.Any "内部错误"
+// @Router /api/v1/admin/users/{id}/status [put]
+func UpdateUserStatus(c *gin.Context) {
+	var req updateUserStatusRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.AbortBadRequest(c, err.Error())
+		return
+	}
+
+	id, ok := parseUserID(c)
+	if !ok {
+		return
+	}
+
+	if err := updateUserStatus(c.Request.Context(), id, req.IsActive); err != nil {
+		if abortUserLogicError(c, err, userNotFound, []string{cannotDisable}, nil) {
+			return
+		}
+		response.AbortInternal(c, updateUserFailed)
+		return
+	}
+
+	c.JSON(http.StatusOK, response.OKNil())
+}
+
+// DeleteUser 删除用户
+// @Summary 删除用户
+// @Description 删除指定非管理员用户，需要管理员权限，不能删除当前登录用户
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Param id path int true "用户 ID"
+// @Success 200 {object} response.Any{data=string} "删除成功"
+// @Failure 400 {object} response.Any "参数错误"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限、尝试删除管理员或当前用户"
+// @Failure 404 {object} response.Any "用户不存在"
+// @Failure 500 {object} response.Any "内部错误"
+// @Router /api/v1/admin/users/{id} [delete]
+func DeleteUser(c *gin.Context) {
+	id, ok := parseUserID(c)
+	if !ok {
+		return
+	}
+
+	currUser, _ := util.GetFromContext[*contracts.UserDTO](c, contracts.AuthUserObjKey)
+	if currUser == nil {
+		response.AbortUnauthorized(c, AdminRequired)
+		return
+	}
+	if err := deleteUser(c.Request.Context(), currUser.ID, id); err != nil {
+		if abortUserLogicError(c, err, userNotFound, []string{cannotDelete, cannotDeleteSelf}, nil) {
+			return
+		}
+		response.AbortInternal(c, deleteUserFailed)
+		return
+	}
+
+	c.JSON(http.StatusOK, response.OKNil())
+}
+
+// createUserRequest 创建用户请求
+type createUserRequest struct {
+	Username string `json:"username" binding:"required,min=3,max=64"`
+	Password string `json:"password" binding:"required,min=8,max=64"`
+	Nickname string `json:"nickname" binding:"omitempty,max=64"`
+	Email    string `json:"email" binding:"required,email,max=255"`
+	IsActive bool   `json:"is_active"`
+	IsAdmin  bool   `json:"is_admin"`
+}
+
+// CreateUser 创建用户
+// @Summary 创建用户
+// @Description 创建一个本地密码登录的新用户，需要管理员权限
+// @Tags admin
+// @Accept json
+// @Produce json
+// @Security SessionCookie
+// @Param request body createUserRequest true "创建用户参数"
+// @Success 200 {object} response.Any{data=userResponse} "创建成功"
+// @Failure 400 {object} response.Any "参数错误或用户名已存在"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限"
+// @Failure 500 {object} response.Any "内部错误"
+// @Router /api/v1/admin/users [post]
+func CreateUser(c *gin.Context) {
+	var req createUserRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.AbortBadRequest(c, err.Error())
+		return
+	}
+
+	newUser, err := createUser(c.Request.Context(), req)
+	if abortUserLogicError(c, err, "", nil, []string{usernameRequired, emailRequired, passwordTooShort, usernameExists, emailExists}) {
+		return
+	}
+
+	c.JSON(http.StatusOK, response.OK(toUserResponse(newUser)))
+}
+
+// updateUserRequest 更新用户信息请求
+type updateUserRequest struct {
+	Nickname string `json:"nickname" binding:"max=64"`
+	Email    string `json:"email" binding:"required,email,max=255"`
+	IsAdmin  bool   `json:"is_admin"`
+	Password string `json:"password" binding:"omitempty,min=8,max=64"`
+}
+
+// UpdateUser 更新用户信息
+// @Summary 更新用户信息
+// @Description 更新指定用户的昵称、邮箱、管理员权限，并可选重置密码，需要管理员权限
+// @Tags admin
+// @Accept json
+// @Produce json
+// @Security SessionCookie
+// @Param id path int true "用户 ID"
+// @Param request body updateUserRequest true "更新参数"
+// @Success 200 {object} response.Any{data=string} "更新成功"
+// @Failure 400 {object} response.Any "参数错误"
+// @Failure 401 {object} response.Any "未登录"
+// @Failure 403 {object} response.Any "无管理员权限或尝试修改自身权限"
+// @Failure 404 {object} response.Any "用户不存在"
+// @Failure 500 {object} response.Any "内部错误"
+// @Router /api/v1/admin/users/{id} [put]
+func UpdateUser(c *gin.Context) {
+	var req updateUserRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.AbortBadRequest(c, err.Error())
+		return
+	}
+
+	id, ok := parseUserID(c)
+	if !ok {
+		return
+	}
+
+	currUser, _ := util.GetFromContext[*contracts.UserDTO](c, contracts.AuthUserObjKey)
+	if currUser == nil {
+		response.AbortUnauthorized(c, AdminRequired)
+		return
+	}
+	err := updateUser(c.Request.Context(), currUser.ID, updateUserParam{
+		ID:       id,
+		Nickname: req.Nickname,
+		Email:    req.Email,
+		IsAdmin:  req.IsAdmin,
+		Password: req.Password,
+	})
+
+	if err != nil {
+		if abortUserLogicError(c, err, userNotFound, []string{cannotRevokeSelfAdmin}, []string{emailRequired, emailExists, passwordTooShort}) {
+			return
+		}
+		response.AbortInternal(c, updateUserInfoFailed)
+		return
+	}
+
+	c.JSON(http.StatusOK, response.OKNil())
+}
+
+func listUsers(ctx context.Context, req listUsersRequest) (int64, []*contracts.UserDTO, error) {
+	query := db.DB(ctx).Table("w_users")
+	if req.UserID != nil {
+		query = query.Where("id = ?", *req.UserID)
+	}
+	if req.Username != "" {
+		query = query.Where("username LIKE ? ESCAPE '\\'", util.EscapeLike(req.Username)+"%")
+	}
+	if req.Email != "" {
+		query = query.Where("email LIKE ? ESCAPE '\\'", util.EscapeLike(req.Email)+"%")
+	}
+
+	var total int64
+	if err := query.Count(&total).Error; err != nil {
+		return 0, nil, err
+	}
+
+	var users []*contracts.UserDTO
+	offset := (req.Page - 1) * req.PageSize
+	if err := query.
+		Select("id, username, nickname, email, avatar_url, is_active, is_admin, last_login_at, created_at, updated_at").
+		Order("id ASC").
+		Offset(offset).
+		Limit(req.PageSize).
+		Find(&users).Error; err != nil {
+		return 0, nil, err
+	}
+	return total, users, nil
+}
+
+func getUserDetail(ctx context.Context, id uint64) (*contracts.UserDTO, error) {
+	var user contracts.UserDTO
+	if err := db.DB(ctx).Table("w_users").
+		Select("id, username, nickname, email, avatar_url, is_active, is_admin, bio, phone, gender, website, location, last_login_at, created_at, updated_at").
+		Where("id = ?", id).
+		First(&user).Error; err != nil {
+		return nil, err
+	}
+	return &user, nil
+}
+
+func updateUserStatus(ctx context.Context, id uint64, active bool) error {
+	var flags struct {
+		ID      uint64
+		IsAdmin bool
+	}
+	if err := db.DB(ctx).Table("w_users").Select("id, is_admin").Where("id = ?", id).First(&flags).Error; err != nil {
+		return err
+	}
+	if !active && flags.IsAdmin {
+		return errors.New(cannotDisable)
+	}
+
+	var tokenHashes []string
+	if !active {
+		_ = db.DB(ctx).Table("w_access_tokens").Where("user_id = ?", id).Pluck("token_hash", &tokenHashes).Error
+	}
+
+	err := db.DB(ctx).Table("w_users").Where("id = ?", id).Update("is_active", active).Error
+	if err == nil {
+		auth.InvalidateCachedUser(ctx, id)
+		if !active {
+			for _, hash := range tokenHashes {
+				auth.InvalidateCachedToken(ctx, hash)
+			}
+		}
+	}
+	return err
+}
+
+func deleteUser(ctx context.Context, currentUserID, targetID uint64) error {
+	if currentUserID == targetID {
+		return errors.New(cannotDeleteSelf)
+	}
+	var flags struct {
+		ID      uint64
+		IsAdmin bool
+	}
+	if err := db.DB(ctx).Table("w_users").Select("id, is_admin").Where("id = ?", targetID).First(&flags).Error; err != nil {
+		return err
+	}
+	if flags.IsAdmin {
+		return errors.New(cannotDelete)
+	}
+
+	var tokenHashes []string
+	_ = db.DB(ctx).Table("w_access_tokens").Where("user_id = ?", targetID).Pluck("token_hash", &tokenHashes).Error
+
+	err := db.DB(ctx).Transaction(func(tx *gorm.DB) error {
+		if err := tx.Table("w_access_tokens").Where("user_id = ?", targetID).Delete(map[string]any{}).Error; err != nil {
+			return err
+		}
+		if err := tx.Table("w_external_accounts").Where("user_id = ?", targetID).Delete(map[string]any{}).Error; err != nil {
+			return err
+		}
+		return tx.Table("w_users").Where("id = ?", targetID).Delete(map[string]any{}).Error
+	})
+	if err == nil {
+		auth.InvalidateCachedUser(ctx, targetID)
+		for _, hash := range tokenHashes {
+			auth.InvalidateCachedToken(ctx, hash)
+		}
+	}
+	return err
+}
+
+func createUser(ctx context.Context, req createUserRequest) (*contracts.UserDTO, error) {
+	req.Username = strings.TrimSpace(req.Username)
+	req.Nickname = strings.TrimSpace(req.Nickname)
+	req.Password = strings.TrimSpace(req.Password)
+	req.Email = strings.TrimSpace(req.Email)
+
+	if req.Username == "" {
+		return nil, errors.New(usernameRequired)
+	}
+	if req.Email == "" {
+		return nil, errors.New(emailRequired)
+	}
+	if len(req.Password) < minPasswordLength {
+		return nil, errors.New(passwordTooShort)
+	}
+
+	var count int64
+	if err := db.DB(ctx).Table("w_users").Where("username = ?", req.Username).Count(&count).Error; err != nil {
+		return nil, err
+	}
+	if count > 0 {
+		return nil, errors.New(usernameExists)
+	}
+
+	var emailCount int64
+	if err := db.DB(ctx).Table("w_users").Where("email = ?", req.Email).Count(&emailCount).Error; err != nil {
+		return nil, err
+	}
+	if emailCount > 0 {
+		return nil, errors.New(emailExists)
+	}
+
+	hash, err := util.HashPassword(req.Password)
+	if err != nil {
+		return nil, err
+	}
+
+	if req.Nickname == "" {
+		req.Nickname = req.Username
+	}
+
+	now := time.Now()
+	newUser := contracts.UserDTO{
+		ID:        idgen.NextUint64ID(),
+		Username:  req.Username,
+		Nickname:  req.Nickname,
+		Email:     req.Email,
+		IsActive:  req.IsActive,
+		IsAdmin:   req.IsAdmin,
+		CreatedAt: now,
+		UpdatedAt: now,
+	}
+
+	row := map[string]any{
+		"id":         newUser.ID,
+		"username":   newUser.Username,
+		"password":   hash,
+		"nickname":   newUser.Nickname,
+		"email":      newUser.Email,
+		"is_active":  newUser.IsActive,
+		"is_admin":   newUser.IsAdmin,
+		"created_at": now,
+		"updated_at": now,
+	}
+	if err := db.DB(ctx).Table("w_users").Create(row).Error; err != nil {
+		return nil, err
+	}
+	return &newUser, nil
+}
+
+type updateUserParam struct {
+	ID       uint64
+	Nickname string
+	Email    string
+	IsAdmin  bool
+	Password string
+}
+
+func updateUser(ctx context.Context, currentUserID uint64, param updateUserParam) error {
+	param.Nickname = strings.TrimSpace(param.Nickname)
+	param.Email = strings.TrimSpace(param.Email)
+	param.Password = strings.TrimSpace(param.Password)
+
+	if param.Email == "" {
+		return errors.New(emailRequired)
+	}
+
+	var targetUser contracts.UserDTO
+	if err := db.DB(ctx).Table("w_users").Where("id = ?", param.ID).First(&targetUser).Error; err != nil {
+		return err
+	}
+
+	if currentUserID == param.ID && !param.IsAdmin && targetUser.IsAdmin {
+		return errors.New(cannotRevokeSelfAdmin)
+	}
+
+	if targetUser.Email != param.Email {
+		var count int64
+		if err := db.DB(ctx).Table("w_users").Where("email = ? AND id != ?", param.Email, param.ID).Count(&count).Error; err != nil {
+			return err
+		}
+		if count > 0 {
+			return errors.New(emailExists)
+		}
+	}
+
+	if param.Password != "" && len(param.Password) < minPasswordLength {
+		return errors.New(passwordTooShort)
+	}
+
+	needRevokeTokens := (param.Password != "") || (targetUser.IsAdmin && !param.IsAdmin)
+	var tokenHashes []string
+	if needRevokeTokens {
+		_ = db.DB(ctx).Table("w_access_tokens").Where("user_id = ?", param.ID).Pluck("token_hash", &tokenHashes).Error
+	}
+
+	if param.Nickname == "" {
+		param.Nickname = targetUser.Username
+	}
+
+	updates := map[string]any{
+		"nickname":   param.Nickname,
+		"email":      param.Email,
+		"is_admin":   param.IsAdmin,
+		"updated_at": time.Now(),
+	}
+	if param.Password != "" {
+		hash, err := util.HashPassword(param.Password)
+		if err != nil {
+			return err
+		}
+		updates["password"] = hash
+	}
+
+	err := db.DB(ctx).Table("w_users").Where("id = ?", param.ID).Updates(updates).Error
+	if err == nil {
+		auth.InvalidateCachedUser(ctx, param.ID)
+		if needRevokeTokens {
+			for _, hash := range tokenHashes {
+				auth.InvalidateCachedToken(ctx, hash)
+			}
+		}
+	}
+	return err
+}

backend/plugins/domain/admin/middlewares.go

@@ -0,0 +1,44 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package admin
+
+import (
+	"github.com/Rain-kl/Wavelet/backend/core/contracts"
+	"github.com/Rain-kl/Wavelet/backend/pkg/logger"
+	"github.com/Rain-kl/Wavelet/backend/pkg/response"
+	"github.com/Rain-kl/Wavelet/backend/pkg/trace"
+	"github.com/Rain-kl/Wavelet/backend/pkg/util"
+	"github.com/gin-gonic/gin"
+)
+
+// LoginAdminRequired 返回管理员权限校验中间件
+func LoginAdminRequired() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		ctx, span := trace.Start(c.Request.Context(), "LoginAdminRequired")
+		defer span.End()
+
+		user, _ := util.GetFromContext[*contracts.UserDTO](c, contracts.AuthUserObjKey)
+		if user == nil {
+			response.AbortNotFound(c, AdminRequired)
+			return
+		}
+
+		// 如果是通过 Access Token 鉴权，需要检查令牌本身是否具有管理员权限
+		if tokenAuth, _ := util.GetFromContext[bool](c, contracts.AuthTokenAuthKey); tokenAuth {
+			tokenAdmin, _ := util.GetFromContext[bool](c, contracts.AuthTokenAdminKey)
+			if !tokenAdmin {
+				response.AbortNotFound(c, TokenAdminRequired)
+				return
+			}
+		}
+
+		if !user.IsAdmin {
+			response.AbortNotFound(c, AdminRequired)
+			return
+		}
+
+		logger.InfoF(ctx, "[LoginAdminRequired] %d %s", user.ID, user.Username)
+		c.Next()
+	}
+}

backend/plugins/domain/admin/migrations/00001_initial.sql

@@ -0,0 +1,87 @@
+-- +goose Up
+-- +goose StatementBegin
+CREATE TABLE IF NOT EXISTS w_system_configs (
+    key VARCHAR(64) PRIMARY KEY,
+    value TEXT NOT NULL,
+    type VARCHAR(32) NOT NULL DEFAULT 'system',
+    visibility INTEGER NOT NULL DEFAULT 0,
+    description VARCHAR(255),
+    updated_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP,
+    created_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TABLE IF NOT EXISTS w_templates (
+    id BIGINT PRIMARY KEY,
+    key VARCHAR(80) NOT NULL UNIQUE,
+    name VARCHAR(100) NOT NULL,
+    type VARCHAR(20) NOT NULL DEFAULT 'email',
+    subject VARCHAR(255),
+    content TEXT NOT NULL,
+    description VARCHAR(255),
+    is_system BOOLEAN NOT NULL DEFAULT FALSE,
+    created_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP
+);
+CREATE INDEX IF NOT EXISTS idx_w_templates_is_system ON w_templates (is_system);
+CREATE INDEX IF NOT EXISTS idx_w_templates_created_at ON w_templates (created_at);
+CREATE INDEX IF NOT EXISTS idx_w_templates_updated_at ON w_templates (updated_at);
+
+-- Seed system configs (all default platform configs)
+INSERT INTO w_system_configs (key, value, type, visibility, description, created_at, updated_at) VALUES
+    ('cap_login_enabled', 'false', 'system', 1, '是否启用登录人机验证（true/false）', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('cap_auto_solve', 'true', 'system', 1, '打开页面后是否自动开始计算，关闭则需用户手动点击触发', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('cap_challenge_count', '1', 'system', 0, '客户端需求解的 PoW 难题总数，默认 1，推荐 1～5', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('cap_challenge_size', '32', 'system', 0, '人机验证盐值长度', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('cap_challenge_difficulty', '4', 'system', 0, '人机验证 PoW 难度（目标前缀长度）', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('cap_challenge_ttl_seconds', '600', 'system', 0, '人机验证难题有效时间（秒）', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('cap_token_ttl_seconds', '1200', 'system', 0, '人机验证兑换凭证有效时间（秒）', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('server_address', '', 'system', 0, '服务器地址（用于跨域源控制，不设定则允许任意源）', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('smtp_host', '', 'system', 0, 'SMTP 服务器地址（例如 smtp.example.com）', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('smtp_port', '587', 'system', 0, 'SMTP 端口（例如 587 或 465）', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('smtp_username', '', 'system', 0, 'SMTP 账户（如 sender@example.com）', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('smtp_password', '', 'system', 0, 'SMTP 访问凭证（授权码/密码）', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('upload_allowed_extensions', 'jpg,png,webp', 'system', 1, '允许上传的图片扩展名（逗号分隔）', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('site_name', 'Wavelet', 'system', 1, '系统平台的展示名称', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('password_login_enabled', 'true', 'system', 1, '是否允许使用账号密码登录', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('registration_enabled', 'true', 'system', 1, '控制普通用户是否可以自主注册（true/false）', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('password_register_enabled', 'true', 'system', 1, '是否允许通过密码创建本地账号', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('oidc_login_enabled', 'true', 'system', 1, '是否允许使用第三方 OIDC 认证源登录', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('max_api_keys_per_user', '5', 'business', 1, '限制每个普通用户可以创建的 API Key 最大数量', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('email_login_verification_enabled', 'false', 'system', 1, '是否开启邮箱登录验证（true/false）', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('email_register_verification_enabled', 'false', 'system', 1, '是否开启邮箱注册验证（true/false）', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('menu_display_config', '{}', 'system', 1, '目录显示配置（JSON 字符串，格式为 {url: enabled}）', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('search_engine_indexing_enabled', 'false', 'system', 1, '是否允许搜索引擎爬取/检索该站点（true/false）', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('update_upstream_repository', 'Rain-kl/Wavelet', 'system', 0, 'GitHub Actions Release 上游仓库（owner/repo 或 GitHub 仓库地址）', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('storage_config', '{"driver":"local","local":{"root":"."},"s3":{"region":"us-east-1"},"r2":{"region":"auto"},"minio":{"region":"us-east-1","path_style":true},"oss":{},"webdav":{}}', 'system', 0, '文件存储驱动及连接配置（JSON）', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('disk_cache_max_size_mb', '1024', 'system', 0, '磁盘缓存最大空间大小（MB）', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('disk_cache_ttl_minutes', '1440', 'system', 0, '磁盘缓存默认有效期（分钟）', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('disk_cache_lru_enabled', 'true', 'system', 0, '是否启用 LRU 淘汰机制', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('file_access_whitelist', '["avatar"]', 'system', 0, '免登录访问的文件业务类型白名单 (JSON 数组)', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('login_session_ttl_hours', '168', 'system', 0, '登录会话过期时间（小时）', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('log_database', '', 'system', 0, '当前日志主库（postgres/sqlite/clickhouse），由切换任务写入', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    ('log_db_migration', '', 'system', 0, '日志库迁移冻结标记（空或 migrating）', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP)
+ON CONFLICT (key) DO NOTHING;
+
+INSERT INTO w_templates (id, key, name, type, subject, content, description, is_system, created_at, updated_at) VALUES
+    (1, 'login_email', '登录验证码邮件', 'email', 'Wavelet 登录验证码', '<h3>Wavelet 登录验证</h3><p>您的登录验证码为：<strong>{{.Code}}</strong>，5分钟内有效，请勿将验证码泄露给他人。</p>', '用户密码登录时发送的验证码邮件模板，支持变量：{{.Code}}', TRUE, CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+    (2, 'register_email', '注册验证码邮件', 'email', 'Wavelet 注册验证码', '<h3>Wavelet 注册验证</h3><p>您的注册验证码为：<strong>{{.Code}}</strong>，5分钟内有效，请勿泄露给他人。</p>', '用户注册时发送的验证码邮件模板，支持变量：{{.Code}}', TRUE, CURRENT_TIMESTAMP, CURRENT_TIMESTAMP)
+ON CONFLICT (key) DO NOTHING;
+-- +goose StatementEnd
+
+-- +goose Down
+-- +goose StatementBegin
+DELETE FROM w_templates WHERE key IN ('login_email', 'register_email');
+DELETE FROM w_system_configs WHERE key IN (
+    'cap_login_enabled', 'cap_auto_solve', 'cap_challenge_count', 'cap_challenge_size',
+    'cap_challenge_difficulty', 'cap_challenge_ttl_seconds', 'cap_token_ttl_seconds',
+    'server_address', 'smtp_host', 'smtp_port', 'smtp_username', 'smtp_password',
+    'upload_allowed_extensions', 'site_name', 'password_login_enabled', 'registration_enabled',
+    'password_register_enabled', 'oidc_login_enabled', 'max_api_keys_per_user',
+    'email_login_verification_enabled', 'email_register_verification_enabled',
+    'menu_display_config', 'search_engine_indexing_enabled', 'update_upstream_repository',
+    'storage_config', 'disk_cache_max_size_mb', 'disk_cache_ttl_minutes', 'disk_cache_lru_enabled',
+    'file_access_whitelist', 'login_session_ttl_hours', 'log_database', 'log_db_migration'
+);
+DROP TABLE IF EXISTS w_templates;
+DROP TABLE IF EXISTS w_system_configs;
+-- +goose StatementEnd

backend/plugins/domain/admin/models.go

@@ -0,0 +1,222 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package admin
+
+import (
+	"bytes"
+	"errors"
+	"strings"
+	"text/template"
+	"time"
+)
+
+// 配置键常量 - 所有系统配置的 key 定义
+const (
+	ConfigKeyUploadAllowedExtensions          = "upload_allowed_extensions"           // 允许上传的文件扩展名，逗号分隔
+	ConfigKeySiteName                         = "site_name"                           // 站点名称
+	ConfigKeyPasswordLoginEnabled             = "password_login_enabled"              // 是否允许密码登录
+	ConfigKeyRegistrationEnabled              = "registration_enabled"                // 是否允许注册
+	ConfigKeyPasswordRegisterEnabled          = "password_register_enabled"           // 是否允许密码注册
+	ConfigKeyOIDCLoginEnabled                 = "oidc_login_enabled"                  // 是否允许 OIDC 登录
+	ConfigKeyMaxAPIKeysPerUser                = "max_api_keys_per_user"               //nolint:gosec // false positive: config key name, not credentials
+	ConfigKeyCapLoginEnabled                  = "cap_login_enabled"                   // 是否启用登录人机验证
+	ConfigKeyCapAutoSolve                     = "cap_auto_solve"                      // 打开页面后是否自动开始计算（false 则需用户手动点击）
+	ConfigKeyCapChallengeCount                = "cap_challenge_count"                 // 客户端需求解的 PoW 难题总数，默认 1，推荐 1～5
+	ConfigKeyCapChallengeSize                 = "cap_challenge_size"                  // 人机验证盐值长度
+	ConfigKeyCapChallengeDifficulty           = "cap_challenge_difficulty"            // 人机验证 PoW 难度（目标前缀长度）
+	ConfigKeyCapChallengeTTL                  = "cap_challenge_ttl_seconds"           // 人机验证难题有效时间（秒）
+	ConfigKeyCapTokenTTL                      = "cap_token_ttl_seconds"               //nolint:gosec // false positive: config key name, not credentials
+	ConfigKeyServerAddress                    = "server_address"                      // 服务器地址
+	ConfigKeySMTPHost                         = "smtp_host"                           // SMTP 服务器地址
+	ConfigKeySMTPPort                         = "smtp_port"                           // SMTP 端口
+	ConfigKeySMTPUsername                     = "smtp_username"                       // SMTP 账户
+	ConfigKeySMTPPassword                     = "smtp_password"                       // SMTP 访问凭证
+	ConfigKeyEmailLoginVerificationEnabled    = "email_login_verification_enabled"    // 是否启用邮箱登录验证
+	ConfigKeyEmailRegisterVerificationEnabled = "email_register_verification_enabled" // 是否启用邮箱注册验证
+	ConfigKeyMenuDisplayConfig                = "menu_display_config"                 // 目录显示配置 (JSON 字符串)
+	ConfigKeySearchEngineIndexingEnabled      = "search_engine_indexing_enabled"      // 是否允许搜索引擎检索
+	ConfigKeyFileAccessWhitelist              = "file_access_whitelist"               // 免登录访问的文件业务类型白名单 (JSON 数组格式)
+	ConfigKeyDiskCacheMaxSizeMB               = "disk_cache_max_size_mb"              // 磁盘缓存最大空间大小 (MB)
+	ConfigKeyDiskCacheTTLMinutes              = "disk_cache_ttl_minutes"              // 磁盘缓存默认有效期 (分钟)
+	ConfigKeyDiskCacheLRUEnabled              = "disk_cache_lru_enabled"              // 是否启用 LRU 淘汰机制
+	ConfigKeyLoginSessionTTLHours             = "login_session_ttl_hours"             // 登录会话过期时间 (小时)
+	ConfigKeyUpdateUpstreamRepository         = "update_upstream_repository"          // GitHub Actions Release 上游仓库
+	ConfigKeyStorageConfig                    = "storage_config"                      // 文件存储配置 (JSON)
+	ConfigKeyLogDatabase                      = "log_database"                        // 当前日志主库（postgres/sqlite/clickhouse），受保护
+	ConfigKeyLogDBMigration                   = "log_db_migration"                    // 日志库迁移冻结标记（空/migrating），受保护
+	ConfigKeyLogRetentionDaysPostgres         = "log_retention_days_postgres"         // PostgreSQL 用户访问日志保留天数
+	ConfigKeyLogRetentionDaysSQLite           = "log_retention_days_sqlite"           // SQLite 用户访问日志保留天数
+	ConfigKeyLogRetentionDaysClickHouse       = "log_retention_days_clickhouse"       // ClickHouse 用户访问日志保留天数
+)
+
+const (
+	// ConfigVisibilityHidden 表示配置不通过公共配置接口暴露
+	ConfigVisibilityHidden = 0
+	// ConfigVisibilityVisible 表示配置通过公共配置接口暴露
+	ConfigVisibilityVisible = 1
+)
+
+// SystemConfig 系统配置实体
+type SystemConfig struct {
+	Key         string    `json:"key" gorm:"primaryKey;size:64;not null"`
+	Value       string    `json:"value" gorm:"type:text;not null"`
+	Type        string    `json:"type" gorm:"size:32;not null;default:'system'"`
+	Visibility  int       `json:"visibility" gorm:"not null;default:0"`
+	Description string    `json:"description" gorm:"size:255"`
+	UpdatedAt   time.Time `json:"updated_at" gorm:"autoUpdateTime"`
+	CreatedAt   time.Time `json:"created_at" gorm:"autoCreateTime"`
+}
+
+// TableName 表名
+func (SystemConfig) TableName() string {
+	return "w_system_configs"
+}
+
+// Template 邮件/消息模板实体
+type Template struct {
+	ID          uint64    `json:"id" gorm:"primaryKey;autoIncrement"`
+	Key         string    `json:"key" gorm:"uniqueIndex;size:80;not null"`
+	Name        string    `json:"name" gorm:"size:100;not null"`
+	Type        string    `json:"type" gorm:"size:20;not null;default:'email'"`
+	Subject     string    `json:"subject" gorm:"size:255"`
+	Content     string    `json:"content" gorm:"type:text;not null"`
+	Description string    `json:"description" gorm:"size:255"`
+	IsSystem    bool      `json:"is_system" gorm:"index;not null;default:false"`
+	CreatedAt   time.Time `json:"created_at" gorm:"autoCreateTime;index"`
+	UpdatedAt   time.Time `json:"updated_at" gorm:"autoUpdateTime;index"`
+}
+
+// TableName 表名
+func (Template) TableName() string {
+	return "w_templates"
+}
+
+// TemplateTypeEmail 邮件模板类型
+const TemplateTypeEmail = "email"
+
+// Normalize 规范化模板字段
+func (t *Template) Normalize() {
+	t.Key = strings.TrimSpace(t.Key)
+	t.Name = strings.TrimSpace(t.Name)
+	t.Type = strings.ToLower(strings.TrimSpace(t.Type))
+	t.Subject = strings.TrimSpace(t.Subject)
+	t.Content = strings.TrimSpace(t.Content)
+	t.Description = strings.TrimSpace(t.Description)
+	if t.Type == "" {
+		t.Type = TemplateTypeEmail
+	}
+}
+
+// Validate 校验模板必填字段
+func (t *Template) Validate() error {
+	t.Normalize()
+	if t.Key == "" {
+		return errors.New(TemplateKeyRequired)
+	}
+	if t.Name == "" {
+		return errors.New(TemplateNameRequired)
+	}
+	if t.Content == "" {
+		return errors.New(TemplateContentRequired)
+	}
+	return nil
+}
+
+// Render 渲染模板的 Subject 和 Content
+func (t *Template) Render(data any) (string, string, error) {
+	var subject string
+	if t.Subject != "" {
+		tmplSubject, err := template.New(t.Key + "_subject").Parse(t.Subject)
+		if err != nil {
+			return "", "", err
+		}
+		var subBuf bytes.Buffer
+		if err := tmplSubject.Execute(&subBuf, data); err != nil {
+			return "", "", err
+		}
+		subject = subBuf.String()
+	}
+
+	tmplContent, err := template.New(t.Key + "_content").Parse(t.Content)
+	if err != nil {
+		return "", "", err
+	}
+	var bodyBuf bytes.Buffer
+	if err := tmplContent.Execute(&bodyBuf, data); err != nil {
+		return "", "", err
+	}
+
+	return subject, bodyBuf.String(), nil
+}
+
+// Schedule 定时任务配置表
+type Schedule struct {
+	ID        uint64    `json:"id,string" gorm:"primaryKey"`
+	Name      string    `json:"name" gorm:"size:128;not null"`
+	TaskType  string    `json:"task_type" gorm:"size:64;not null"`
+	Cron      string    `json:"cron" gorm:"size:64;not null"`
+	Payload   string    `json:"payload" gorm:"type:text"`
+	IsActive  bool      `json:"is_active" gorm:"not null;default:true"`
+	CreatedAt time.Time `json:"created_at" gorm:"autoCreateTime;index"`
+	UpdatedAt time.Time `json:"updated_at" gorm:"autoUpdateTime"`
+}
+
+// TableName 表名
+func (Schedule) TableName() string {
+	return "w_schedules"
+}
+
+// TaskExecutionStatus 任务执行状态
+type TaskExecutionStatus string
+
+// 任务执行状态
+const (
+	TaskExecutionStatusPending   TaskExecutionStatus = "pending"
+	TaskExecutionStatusRunning   TaskExecutionStatus = "running"
+	TaskExecutionStatusSucceeded TaskExecutionStatus = "succeeded"
+	TaskExecutionStatusFailed    TaskExecutionStatus = "failed"
+)
+
+// TaskExecution 任务执行记录
+type TaskExecution struct {
+	ID           uint64              `json:"id,string" gorm:"primaryKey"`
+	TaskID       string              `json:"task_id" gorm:"size:128;uniqueIndex;not null"`
+	TaskType     string              `json:"task_type" gorm:"size:64;index;not null"`
+	TaskName     string              `json:"task_name" gorm:"size:128"`
+	Status       TaskExecutionStatus `json:"status" gorm:"size:32;index;not null"`
+	Retryable    bool                `json:"retryable" gorm:"not null;default:false"`
+	MaxRetry     int                 `json:"max_retry" gorm:"not null;default:0"`
+	RetryCount   int                 `json:"retry_count" gorm:"not null;default:0"`
+	Log          string              `json:"log" gorm:"type:text"`
+	ErrorMessage string              `json:"error_message" gorm:"type:text"`
+	Result       string              `json:"result" gorm:"type:text"`
+	StartedAt    *time.Time          `json:"started_at" gorm:"index"`
+	FinishedAt   *time.Time          `json:"finished_at"`
+	Duration     int64               `json:"duration" gorm:"comment:耗时毫秒"`
+	Payload      string              `json:"payload" gorm:"type:text"`
+	TriggeredBy  string              `json:"triggered_by" gorm:"size:32;not null;default:system"`
+	CreatedAt    time.Time           `json:"created_at" gorm:"autoCreateTime;index"`
+	UpdatedAt    time.Time           `json:"updated_at" gorm:"autoUpdateTime"`
+}
+
+// TableName 表名
+func (TaskExecution) TableName() string {
+	return "w_task_executions"
+}
+
+// ListTaskExecutionsRequest 分页查询任务执行记录请求参数
+type ListTaskExecutionsRequest struct {
+	Page           int    `form:"page"`
+	PageSize       int    `form:"page_size"`
+	Status         string `form:"status"`
+	TaskType       string `form:"task_type"`
+	TaskTypes      string `form:"task_types"`
+	TaskTypePrefix string `form:"task_type_prefix"`
+}
+
+// TaskExecutionCleanupStats 任务日志清理结果统计
+type TaskExecutionCleanupStats struct {
+	HighFrequencyDeleted int64 `json:"high_frequency_deleted"`
+	LowFrequencyDeleted  int64 `json:"low_frequency_deleted"`
+}

backend/plugins/domain/admin/plugin.go

@@ -0,0 +1,202 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+// Package admin provides the system management console, diagnostics, audit logging, and configuration hot-reloading domain plugin for Cordis.
+package admin
+
+import (
+	"context"
+	"embed"
+
+	"github.com/Rain-kl/Wavelet/backend/core"
+	"github.com/Rain-kl/Wavelet/backend/core/contracts"
+	"github.com/Rain-kl/Wavelet/backend/core/extpoints"
+	"github.com/gin-gonic/gin"
+	"github.com/hibiken/asynq"
+)
+
+//go:embed migrations/*.sql
+var adminMigrations embed.FS
+
+// Option configures the admin plugin.
+type Option func(*Plugin)
+
+// Plugin implements core.Plugin to provide system administration and management APIs.
+type Plugin struct{}
+
+// New creates a new admin domain plugin.
+func New(opts ...Option) *Plugin {
+	p := &Plugin{}
+	for _, opt := range opts {
+		if opt != nil {
+			opt(p)
+		}
+	}
+	return p
+}
+
+// Name returns the unique identifier for the admin domain plugin.
+func (p *Plugin) Name() string {
+	return "admin"
+}
+
+// Manifest returns the plugin metadata.
+func (p *Plugin) Manifest() core.Manifest {
+	return core.Manifest{
+		Name:        "admin",
+		Version:     "1.0.0",
+		Description: "System administration console, diagnostic monitoring, and configuration hot-reload plugin",
+		Author:      "Wavelet Team",
+	}
+}
+
+// Apply registers admin routes, tasks, schedules, and settings into the Context.
+func (p *Plugin) Apply(ctx *core.Context) error {
+	// 0. Resolve auth service for middleware (via IoC, not direct import)
+	var loginMW gin.HandlerFunc = func(c *gin.Context) { c.Next() }
+	var adminMW gin.HandlerFunc = func(c *gin.Context) { c.Next() }
+	if authSvc, err := core.Inject[contracts.AuthService](ctx); err == nil && authSvc != nil {
+		if mw, ok := authSvc.RequireAuthMiddleware().(gin.HandlerFunc); ok {
+			loginMW = mw
+		}
+		if mw, ok := authSvc.RequireAdminMiddleware().(gin.HandlerFunc); ok {
+			adminMW = mw
+		}
+	}
+
+	// 0a. Register migrations
+	ctx.Migrations().Register("admin", adminMigrations)
+
+	// 1. Register Admin HTTP Routes
+	adminRouter := ctx.Router().Group("/api/v1/admin", loginMW, adminMW)
+	{
+		// Status & Diagnostics
+		adminRouter.GET("/status", GetSystemStatus)
+		adminRouter.GET("/status/log-database", GetLogDatabaseStatus)
+		adminRouter.GET("/db-info", GetDatabaseInfo)
+		adminRouter.GET("/db-export", ExportDatabase)
+
+		// DB Management
+		dbGroup := adminRouter.Group("/db-manage")
+		{
+			dbGroup.GET("/overview", GetDBOverview)
+			dbGroup.GET("/tables", ListDBTables)
+			dbGroup.GET("/table-data", GetDBTableData)
+			dbGroup.POST("/query", ExecuteSQL)
+		}
+
+		// Cache Management
+		cacheGroup := adminRouter.Group("/cache")
+		{
+			cacheGroup.GET("/status", GetCacheStatus)
+			cacheGroup.POST("/config", UpdateCacheConfig)
+			cacheGroup.POST("/clear", ClearCache)
+		}
+
+		// Updater
+		updateGroup := adminRouter.Group("/update")
+		{
+			updateGroup.GET("", GetUpdateStatus)
+			updateGroup.POST("/apply", ApplyUpdate)
+		}
+
+		// Logs
+		logsGroup := adminRouter.Group("/logs")
+		{
+			logsGroup.GET("", GetLogs)
+			logsGroup.GET("/access", GetAccessLogs)
+			logsGroup.GET("/analytics", GetLogsAnalytics)
+			logsGroup.GET("/ws", HandleLogWebSocket)
+		}
+
+		// Users
+		usersGroup := adminRouter.Group("/users")
+		{
+			usersGroup.GET("", ListUsers)
+			usersGroup.POST("", CreateUser)
+			usersGroup.GET("/:id", GetUser)
+			usersGroup.PUT("/:id/status", UpdateUserStatus)
+			usersGroup.PUT("/:id", UpdateUser)
+			usersGroup.DELETE("/:id", DeleteUser)
+		}
+
+		// Auth Sources
+		authSourcesGroup := adminRouter.Group("/auth-sources")
+		{
+			authSourcesGroup.GET("", ListAuthSources)
+			authSourcesGroup.POST("", CreateAuthSource)
+			authSourcesGroup.PUT("/:id", UpdateAuthSource)
+			authSourcesGroup.PUT("/:id/toggle", ToggleAuthSource)
+			authSourcesGroup.DELETE("/:id", DeleteAuthSource)
+		}
+
+		// System Configs
+		configGroup := adminRouter.Group("/system-configs")
+		{
+			configGroup.GET("", ListSystemConfigs)
+			configGroup.POST("", CreateSystemConfig)
+			configGroup.POST("/smtp/test", TestSMTP)
+
+			keyGroup := configGroup.Group("/:key")
+			{
+				keyGroup.GET("", GetSystemConfig)
+				keyGroup.PUT("", UpdateSystemConfig)
+			}
+		}
+
+		// Templates
+		templateGroup := adminRouter.Group("/templates")
+		{
+			templateGroup.GET("", ListTemplates)
+			templateGroup.POST("", CreateTemplate)
+
+			keyGroup := templateGroup.Group("/:key")
+			{
+				keyGroup.GET("", GetTemplate)
+				keyGroup.PUT("", UpdateTemplate)
+				keyGroup.DELETE("", DeleteTemplate)
+			}
+		}
+
+		// Tasks
+		taskGroup := adminRouter.Group("/tasks")
+		{
+			taskGroup.GET("/types", ListTaskTypes)
+			taskGroup.POST("/dispatch", DispatchTask)
+
+			executions := taskGroup.Group("/executions")
+			{
+				executions.GET("", ListTaskExecutions)
+				executions.GET("/:id", GetTaskExecution)
+				executions.POST("/:id/retry", RetryTask)
+			}
+
+			schedules := taskGroup.Group("/schedules")
+			{
+				schedules.GET("", ListSchedules)
+				schedules.POST("", CreateSchedule)
+				schedules.PUT("/:id", UpdateSchedule)
+				schedules.DELETE("/:id", DeleteSchedule)
+			}
+		}
+	}
+
+	// 2. Register Background Tasks
+	ctx.Task().Register("admin:system_cleanup", func(_ context.Context, _ *asynq.Task) error {
+		return nil
+	}, extpoints.WithTaskRetry(1))
+
+	// 3. Register Cron Schedules
+	ctx.Schedule().RegisterCron("0 4 * * *", "admin:system_cleanup", map[string]string{"type": "daily"})
+
+	// 4. Register Settings Schemas
+	ctx.Settings().Register(extpoints.SettingSchema{
+		Key:         "admin.system_cleanup_cron",
+		Default:     "0 4 * * *",
+		Description: "Cron expression for nightly system logs and expired tokens cleanup",
+		Type:        "string",
+		Category:    "maintenance",
+	})
+
+	return nil
+}

backend/plugins/domain/admin/plugin_test.go

@@ -0,0 +1,41 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package admin_test
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	"github.com/Rain-kl/Wavelet/backend/core"
+	"github.com/Rain-kl/Wavelet/backend/plugins/domain/admin"
+)
+
+func TestAdminPluginUnit(t *testing.T) {
+	ctx := core.NewContext(context.Background())
+	p := admin.New()
+	assert.Equal(t, "admin", p.Name())
+	assert.Equal(t, "1.0.0", p.Manifest().Version)
+	require.NoError(t, p.Apply(ctx))
+
+	// Verify routes
+	routes := ctx.Router().Routes()
+	assert.NotEmpty(t, routes)
+
+	// Verify tasks
+	_, ok := ctx.Tasks().Get("admin:system_cleanup")
+	require.True(t, ok)
+
+	// Verify schedules
+	sched, ok := ctx.Schedules().Get("admin:system_cleanup")
+	require.True(t, ok)
+	assert.Equal(t, "0 4 * * *", sched.Spec)
+
+	// Verify settings
+	setting, ok := ctx.Settings().Get("admin.system_cleanup_cron")
+	require.True(t, ok)
+	assert.Equal(t, "0 4 * * *", setting.Default)
+}

backend/plugins/domain/admin/repository.go

@@ -0,0 +1,705 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package admin
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/redis/go-redis/v9"
+	"github.com/shopspring/decimal"
+	"gorm.io/gorm"
+
+	"github.com/Rain-kl/Wavelet/backend/pkg/cache/ram"
+	"github.com/Rain-kl/Wavelet/backend/pkg/idgen"
+	"github.com/Rain-kl/Wavelet/backend/pkg/util"
+	cachepkg "github.com/Rain-kl/Wavelet/backend/plugins/infra/cache"
+	db "github.com/Rain-kl/Wavelet/backend/plugins/infra/database"
+)
+
+const (
+	configTypeSystem                = "system"
+	errDatabaseNotInitialized       = "database not initialized"
+	errConfigIntParseFailed         = "配置 %s 的值 '%s' 无法转换为整数: %w"
+	errConfigDecimalParseFailed     = "配置 %s 的值 '%s' 无法转换为decimal: %w"
+	errConfigBoolParseFailed        = "配置 %s 的值 '%s' 无法转换为布尔值: %w"
+	errParseMenuDisplayConfigFailed = "解析目录显示配置失败: %w"
+
+	taskExecutionLogRedisKeyPrefix = "task:execution:log:"
+	taskExecutionLogExpiration     = 24 * time.Hour
+	taskExecutionLogMaxLines       = 1000
+)
+
+// PreheatSystemConfigs loads all system configs from database.
+func PreheatSystemConfigs(ctx context.Context) ([]SystemConfig, error) {
+	database := db.DB(ctx)
+	if database == nil {
+		return nil, errors.New(errDatabaseNotInitialized)
+	}
+
+	var configs []SystemConfig
+	if err := database.Find(&configs).Error; err != nil {
+		return nil, err
+	}
+	return configs, nil
+}
+
+// PreheatSystemConfigByKey loads a single config key from database.
+func PreheatSystemConfigByKey(ctx context.Context, key string) (SystemConfig, error) {
+	database := db.DB(ctx)
+	if database == nil {
+		return SystemConfig{}, errors.New(errDatabaseNotInitialized)
+	}
+
+	var sc SystemConfig
+	if err := database.Where("key = ?", key).First(&sc).Error; err != nil {
+		return SystemConfig{}, err
+	}
+	return sc, nil
+}
+
+// GetSystemConfigByGroup queries a configuration by Type and Key.
+func GetSystemConfigByGroup(ctx context.Context, configType string, key string) (SystemConfig, error) {
+	ensureSystemConfigCacheListener()
+
+	if item, ok := ram.Get(configType, key); ok {
+		var sc SystemConfig
+		if err := json.Unmarshal([]byte(item.Value), &sc); err == nil {
+			return sc, nil
+		}
+	}
+
+	database := db.DB(ctx)
+	if database == nil {
+		return SystemConfig{}, errors.New(errDatabaseNotInitialized)
+	}
+
+	var sc SystemConfig
+	if err := database.Where("key = ?", key).First(&sc).Error; err != nil {
+		return SystemConfig{}, err
+	}
+
+	valBytes, err := json.Marshal(sc)
+	if err == nil {
+		ram.Set(ram.CacheItem{
+			Key:   sc.Key,
+			Value: string(valBytes),
+			Type:  configType,
+			TTL:   determineTTL(sc.Key),
+		})
+	}
+
+	return sc, nil
+}
+
+// GetSystemConfigByKey queries config by key.
+func GetSystemConfigByKey(ctx context.Context, key string) (SystemConfig, error) {
+	return GetSystemConfigByGroup(ctx, ConfigCacheType, key)
+}
+
+// ListSystemConfigsByKeys loads multiple config keys.
+func ListSystemConfigsByKeys(ctx context.Context, keys []string) (map[string]SystemConfig, error) {
+	if len(keys) == 0 {
+		return map[string]SystemConfig{}, nil
+	}
+
+	ensureSystemConfigCacheListener()
+
+	result := make(map[string]SystemConfig, len(keys))
+	missing := make([]string, 0, len(keys))
+
+	for _, key := range keys {
+		if item, ok := ram.Get(ConfigCacheType, key); ok {
+			var sc SystemConfig
+			if err := json.Unmarshal([]byte(item.Value), &sc); err == nil {
+				result[key] = sc
+				continue
+			}
+		}
+		missing = append(missing, key)
+	}
+
+	if len(missing) == 0 {
+		return result, nil
+	}
+
+	database := db.DB(ctx)
+	if database == nil {
+		return nil, errors.New(errDatabaseNotInitialized)
+	}
+
+	var configs []SystemConfig
+	if err := database.Where("key IN ?", missing).Find(&configs).Error; err != nil {
+		return nil, err
+	}
+
+	for i := range configs {
+		valBytes, err := json.Marshal(configs[i])
+		if err == nil {
+			ram.Set(ram.CacheItem{
+				Key:   configs[i].Key,
+				Value: string(valBytes),
+				Type:  ConfigCacheType,
+				TTL:   determineTTL(configs[i].Key),
+			})
+		}
+		result[configs[i].Key] = configs[i]
+	}
+
+	return result, nil
+}
+
+// InvalidateVisibleSystemConfigsCache clears the cached public config list.
+func InvalidateVisibleSystemConfigsCache(ctx context.Context) error {
+	return InvalidateAllSystemConfigCaches(ctx)
+}
+
+// ListVisibleSystemConfigs queries visible configs using local cache store.
+func ListVisibleSystemConfigs(ctx context.Context) ([]SystemConfig, error) {
+	ensureSystemConfigCacheListener()
+
+	items := ram.GetTypeItems(ConfigCacheType)
+	if len(items) > 0 {
+		var list []SystemConfig
+		for _, item := range items {
+			var sc SystemConfig
+			if err := json.Unmarshal([]byte(item.Value), &sc); err == nil {
+				if sc.Visibility == ConfigVisibilityVisible {
+					list = append(list, sc)
+				}
+			}
+		}
+		return list, nil
+	}
+
+	database := db.DB(ctx)
+	if database == nil {
+		return nil, errors.New(errDatabaseNotInitialized)
+	}
+
+	var configs []SystemConfig
+	if err := database.Where("visibility = ?", ConfigVisibilityVisible).Find(&configs).Error; err != nil {
+		return nil, err
+	}
+
+	for _, cfg := range configs {
+		valBytes, err := json.Marshal(cfg)
+		if err == nil {
+			ram.Set(ram.CacheItem{
+				Key:   cfg.Key,
+				Value: string(valBytes),
+				Type:  ConfigCacheType,
+				TTL:   determineTTL(cfg.Key),
+			})
+		}
+	}
+
+	return configs, nil
+}
+
+// GetIntByKey queries config and converts to int.
+func GetIntByKey(ctx context.Context, key string) (int, error) {
+	sc, err := GetSystemConfigByKey(ctx, key)
+	if err != nil {
+		return 0, err
+	}
+
+	value, err := strconv.Atoi(sc.Value)
+	if err != nil {
+		return 0, fmt.Errorf(errConfigIntParseFailed, key, sc.Value, err)
+	}
+
+	return value, nil
+}
+
+// GetDecimalByKey queries config and converts to decimal.Decimal.
+func GetDecimalByKey(ctx context.Context, key string, precision int32) (decimal.Decimal, error) {
+	sc, err := GetSystemConfigByKey(ctx, key)
+	if err != nil {
+		return decimal.Zero, err
+	}
+
+	value, err := decimal.NewFromString(sc.Value)
+	if err != nil {
+		return decimal.Zero, fmt.Errorf(errConfigDecimalParseFailed, key, sc.Value, err)
+	}
+
+	return value.Truncate(precision), nil
+}
+
+// GetBoolByKey queries config and converts to bool.
+func GetBoolByKey(ctx context.Context, key string) (bool, error) {
+	sc, err := GetSystemConfigByKey(ctx, key)
+	if err != nil {
+		return false, err
+	}
+
+	value, err := strconv.ParseBool(sc.Value)
+	if err != nil {
+		return false, fmt.Errorf(errConfigBoolParseFailed, key, sc.Value, err)
+	}
+
+	return value, nil
+}
+
+// GetMenuDisplayConfig queries and parses menu config.
+func GetMenuDisplayConfig(ctx context.Context) (map[string]bool, error) {
+	sc, err := GetSystemConfigByKey(ctx, ConfigKeyMenuDisplayConfig)
+	if err != nil {
+		return nil, err
+	}
+
+	config := make(map[string]bool)
+	if sc.Value == "" || sc.Value == "{}" {
+		return config, nil
+	}
+
+	if err := json.Unmarshal([]byte(sc.Value), &config); err != nil {
+		return nil, fmt.Errorf(errParseMenuDisplayConfigFailed, err)
+	}
+
+	return config, nil
+}
+
+// ListAdminSystemConfigs returns all configs, optionally filtered by type.
+func ListAdminSystemConfigs(ctx context.Context, configType string) ([]SystemConfig, error) {
+	query := db.DB(ctx).Order("created_at DESC")
+	if configType != "" {
+		query = query.Where("type = ?", configType)
+	}
+	var configs []SystemConfig
+	if err := query.Find(&configs).Error; err != nil {
+		return nil, err
+	}
+	return configs, nil
+}
+
+// GetAdminSystemConfigByKey loads a config directly from DB.
+func GetAdminSystemConfigByKey(ctx context.Context, key string) (SystemConfig, error) {
+	var config SystemConfig
+	if err := db.DB(ctx).Where("key = ?", key).First(&config).Error; err != nil {
+		return SystemConfig{}, err
+	}
+	return config, nil
+}
+
+// SystemConfigExists reports whether a config key already exists.
+func SystemConfigExists(ctx context.Context, key string) (bool, error) {
+	var existing SystemConfig
+	err := db.DB(ctx).Where("key = ?", key).First(&existing).Error
+	if errors.Is(err, gorm.ErrRecordNotFound) {
+		return false, nil
+	}
+	if err != nil {
+		return false, err
+	}
+	return true, nil
+}
+
+// CreateSystemConfigRecord persists a new system config row.
+func CreateSystemConfigRecord(ctx context.Context, config *SystemConfig) error {
+	return db.DB(ctx).Create(config).Error
+}
+
+// UpdateSystemConfigFields applies partial updates to a system config row.
+func UpdateSystemConfigFields(ctx context.Context, config *SystemConfig, updates map[string]any) error {
+	return db.DB(ctx).Model(config).Updates(updates).Error
+}
+
+// SaveOrUpdateSystemConfig creates or updates a config row and invalidates cache.
+func SaveOrUpdateSystemConfig(ctx context.Context, key, value string) error {
+	var sc SystemConfig
+	err := db.DB(ctx).Where("key = ?", key).First(&sc).Error
+	if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
+		return err
+	}
+
+	if errors.Is(err, gorm.ErrRecordNotFound) {
+		sc = SystemConfig{
+			Key:        key,
+			Value:      value,
+			Type:       configTypeSystem,
+			Visibility: ConfigVisibilityHidden,
+		}
+		if err := db.DB(ctx).Create(&sc).Error; err != nil {
+			return err
+		}
+	} else {
+		sc.Value = value
+		if err := db.DB(ctx).Save(&sc).Error; err != nil {
+			return err
+		}
+	}
+	return InvalidateSystemConfigCache(ctx, key)
+}
+
+// ListTemplatesRecord returns all templates ordered by system flag and creation time.
+func ListTemplatesRecord(ctx context.Context) ([]Template, error) {
+	var templates []Template
+	if err := db.DB(ctx).Order("is_system DESC, created_at DESC").Find(&templates).Error; err != nil {
+		return nil, err
+	}
+	return templates, nil
+}
+
+// GetTemplateByKey loads a template by its key.
+func GetTemplateByKey(ctx context.Context, key string) (Template, error) {
+	var tmpl Template
+	if err := db.DB(ctx).Where("key = ?", key).First(&tmpl).Error; err != nil {
+		return Template{}, err
+	}
+	return tmpl, nil
+}
+
+// TemplateExistsByKey reports whether a template key is already taken.
+func TemplateExistsByKey(ctx context.Context, key string) (bool, error) {
+	var existing Template
+	err := db.DB(ctx).Where("key = ?", key).First(&existing).Error
+	if errors.Is(err, gorm.ErrRecordNotFound) {
+		return false, nil
+	}
+	if err != nil {
+		return false, err
+	}
+	return true, nil
+}
+
+// CreateTemplateRecord persists a new template.
+func CreateTemplateRecord(ctx context.Context, tmpl *Template) error {
+	return db.DB(ctx).Create(tmpl).Error
+}
+
+// SaveTemplateRecord updates an existing template.
+func SaveTemplateRecord(ctx context.Context, tmpl *Template) error {
+	return db.DB(ctx).Save(tmpl).Error
+}
+
+// DeleteTemplateRecord removes a template record.
+func DeleteTemplateRecord(ctx context.Context, tmpl *Template) error {
+	return db.DB(ctx).Delete(tmpl).Error
+}
+
+// CreateScheduleRecord 创建定时任务
+func CreateScheduleRecord(ctx context.Context, schedule *Schedule) error {
+	return db.DB(ctx).Create(schedule).Error
+}
+
+// UpdateScheduleRecord 更新定时任务
+func UpdateScheduleRecord(ctx context.Context, schedule *Schedule) error {
+	return db.DB(ctx).Save(schedule).Error
+}
+
+// DeleteScheduleRecord 删除定时任务
+func DeleteScheduleRecord(ctx context.Context, id uint64) error {
+	return db.DB(ctx).Delete(&Schedule{}, id).Error
+}
+
+// GetScheduleByID 根据 ID 获取定时任务
+func GetScheduleByID(ctx context.Context, id uint64) (*Schedule, error) {
+	var schedule Schedule
+	if err := db.DB(ctx).Where("id = ?", id).First(&schedule).Error; err != nil {
+		return nil, err
+	}
+	return &schedule, nil
+}
+
+// ListSchedulesRecord 获取所有定时任务
+func ListSchedulesRecord(ctx context.Context) ([]Schedule, error) {
+	var schedules []Schedule
+	if err := db.DB(ctx).Order("id DESC").Find(&schedules).Error; err != nil {
+		return nil, err
+	}
+	return schedules, nil
+}
+
+// ListActiveSchedules 获取所有启用的定时任务
+func ListActiveSchedules(ctx context.Context) ([]Schedule, error) {
+	var schedules []Schedule
+	if err := db.DB(ctx).Where("is_active = ?", true).Find(&schedules).Error; err != nil {
+		return nil, err
+	}
+	return schedules, nil
+}
+
+// CreateTaskExecutionRecord 创建任务执行记录
+func CreateTaskExecutionRecord(ctx context.Context, execution *TaskExecution) error {
+	execution.ID = idgen.NextUint64ID()
+	return db.DB(ctx).Create(execution).Error
+}
+
+// UpdateTaskExecutionRecord 更新任务执行记录，忽略由 Redis 缓冲和归档流程管理的 log 字段。
+func UpdateTaskExecutionRecord(ctx context.Context, execution *TaskExecution) error {
+	return db.DB(ctx).Omit("log").Save(execution).Error
+}
+
+// GetTaskExecutionByTaskID 根据 TaskID 获取执行记录
+func GetTaskExecutionByTaskID(ctx context.Context, taskID string) (*TaskExecution, error) {
+	var execution TaskExecution
+	if err := db.DB(ctx).Where("task_id = ?", taskID).First(&execution).Error; err != nil {
+		return nil, err
+	}
+	if err := loadTaskExecutionLog(ctx, &execution); err != nil {
+		return nil, err
+	}
+	return &execution, nil
+}
+
+// GetTaskExecutionByID 根据 ID 获取执行记录
+func GetTaskExecutionByID(ctx context.Context, id uint64) (*TaskExecution, error) {
+	var execution TaskExecution
+	if err := db.DB(ctx).Where("id = ?", id).First(&execution).Error; err != nil {
+		return nil, err
+	}
+	if err := loadTaskExecutionLog(ctx, &execution); err != nil {
+		return nil, err
+	}
+	return &execution, nil
+}
+
+// GetLatestTaskExecutionByTaskType returns the most recent execution for a task type.
+func GetLatestTaskExecutionByTaskType(ctx context.Context, taskType string) (*TaskExecution, bool, error) {
+	var execution TaskExecution
+	err := db.DB(ctx).
+		Where("task_type = ?", taskType).
+		Order("id DESC").
+		First(&execution).Error
+	if err == nil {
+		if loadErr := loadTaskExecutionLog(ctx, &execution); loadErr != nil {
+			return nil, false, loadErr
+		}
+		return &execution, true, nil
+	}
+	if errors.Is(err, gorm.ErrRecordNotFound) {
+		return nil, false, nil
+	}
+	return nil, false, err
+}
+
+// AppendTaskExecutionLog 将日志追加到 Redis 缓冲，任务完成后再持久化到数据库。
+func AppendTaskExecutionLog(ctx context.Context, taskID string, logLine string) error {
+	if cachepkg.Redis == nil {
+		return errors.New("redis client is not initialized")
+	}
+
+	now := time.Now().Format("15:04:05")
+	line := fmt.Sprintf("[%s] %s\n", now, logLine)
+	key := taskExecutionLogRedisKey(taskID)
+
+	_, err := cachepkg.Redis.TxPipelined(ctx, func(pipe redis.Pipeliner) error {
+		pipe.RPush(ctx, key, line)
+		pipe.LTrim(ctx, key, -taskExecutionLogMaxLines, -1)
+		pipe.Expire(ctx, key, taskExecutionLogExpiration)
+		return nil
+	})
+	if err != nil {
+		return fmt.Errorf("append task execution log to redis: %w", err)
+	}
+	return nil
+}
+
+// FlushTaskExecutionLog 将 Redis 中的完整任务日志写入数据库，并在成功后清理缓存。
+func FlushTaskExecutionLog(ctx context.Context, taskID string) error {
+	if cachepkg.Redis == nil {
+		return errors.New("redis client is not initialized")
+	}
+
+	key := taskExecutionLogRedisKey(taskID)
+	logLines, err := cachepkg.Redis.LRange(ctx, key, 0, -1).Result()
+	if err != nil {
+		return fmt.Errorf("get task execution log from redis: %w", err)
+	}
+	if len(logLines) == 0 {
+		return nil
+	}
+	logText := strings.Join(logLines, "")
+
+	result := db.DB(ctx).Model(&TaskExecution{}).
+		Where("task_id = ?", taskID).
+		Update("log", logText)
+	if result.Error != nil {
+		return fmt.Errorf("persist task execution log: %w", result.Error)
+	}
+	if result.RowsAffected == 0 {
+		return fmt.Errorf("persist task execution log: task %q not found", taskID)
+	}
+
+	if err := cachepkg.Redis.Del(ctx, key).Err(); err != nil {
+		return fmt.Errorf("delete persisted task execution log from redis: %w", err)
+	}
+	return nil
+}
+
+// ListTaskExecutionRecords 分页查询任务执行记录
+func ListTaskExecutionRecords(ctx context.Context, req ListTaskExecutionsRequest) ([]TaskExecution, int64, error) {
+	if req.Page <= 0 {
+		req.Page = 1
+	}
+	if req.PageSize <= 0 {
+		req.PageSize = 20
+	}
+
+	query := db.DB(ctx).Model(&TaskExecution{})
+
+	if req.Status != "" {
+		query = query.Where("status = ?", req.Status)
+	}
+	if req.TaskType != "" {
+		query = query.Where("task_type = ?", req.TaskType)
+	} else if types := parseTaskTypesFilter(req.TaskTypes); len(types) > 0 {
+		query = query.Where("task_type IN ?", types)
+	} else if req.TaskTypePrefix != "" {
+		query = query.Where("task_type LIKE ? ESCAPE '\\'", util.EscapeLike(req.TaskTypePrefix)+"%")
+	}
+
+	var total int64
+	if err := query.Count(&total).Error; err != nil {
+		return nil, 0, err
+	}
+
+	var executions []TaskExecution
+	offset := (req.Page - 1) * req.PageSize
+	if err := query.Order("id DESC").Offset(offset).Limit(req.PageSize).Find(&executions).Error; err != nil {
+		return nil, 0, err
+	}
+	if err := loadTaskExecutionLogs(ctx, executions); err != nil {
+		return nil, 0, err
+	}
+
+	return executions, total, nil
+}
+
+func parseTaskTypesFilter(raw string) []string {
+	if strings.TrimSpace(raw) == "" {
+		return nil
+	}
+	parts := strings.Split(raw, ",")
+	out := make([]string, 0, len(parts))
+	for _, part := range parts {
+		part = strings.TrimSpace(part)
+		if part != "" {
+			out = append(out, part)
+		}
+	}
+	return out
+}
+
+// MarkFailedTaskExecutionsSucceededTx marks failed executions of a task type as succeeded within a transaction.
+func MarkFailedTaskExecutionsSucceededTx(
+	tx *gorm.DB,
+	taskType string,
+	result string,
+	finishedAt time.Time,
+) error {
+	return tx.Model(&TaskExecution{}).
+		Where("task_type = ? AND status = ?", taskType, TaskExecutionStatusFailed).
+		Updates(map[string]any{
+			"status":      TaskExecutionStatusSucceeded,
+			"result":      result,
+			"finished_at": finishedAt,
+		}).Error
+}
+
+// CleanupTaskExecutionLogs removes finished task execution logs according to frequency-based retention.
+func CleanupTaskExecutionLogs(ctx context.Context, now time.Time) (TaskExecutionCleanupStats, error) {
+	const (
+		frequencyWindowDays    = 30
+		highFrequencyThreshold = frequencyWindowDays
+	)
+
+	frequencyWindowStart := now.AddDate(0, 0, -frequencyWindowDays)
+	highFrequencyCutoff := now.AddDate(0, 0, -3)
+	lowFrequencyCutoff := now.AddDate(0, 0, -30)
+	terminalStatuses := []TaskExecutionStatus{TaskExecutionStatusSucceeded, TaskExecutionStatusFailed}
+
+	var highFrequencyTaskTypes []string
+	if err := db.DB(ctx).
+		Model(&TaskExecution{}).
+		Select("task_type").
+		Where("created_at >= ?", frequencyWindowStart).
+		Group("task_type").
+		Having("COUNT(*) > ?", highFrequencyThreshold).
+		Pluck("task_type", &highFrequencyTaskTypes).Error; err != nil {
+		return TaskExecutionCleanupStats{}, fmt.Errorf("query high-frequency task types: %w", err)
+	}
+
+	var highFrequencyDeleted int64
+	if len(highFrequencyTaskTypes) > 0 {
+		highFrequencyResult := db.DB(ctx).
+			Where("status IN ?", terminalStatuses).
+			Where("created_at < ?", highFrequencyCutoff).
+			Where("task_type IN ?", highFrequencyTaskTypes).
+			Delete(&TaskExecution{})
+		if highFrequencyResult.Error != nil {
+			return TaskExecutionCleanupStats{}, fmt.Errorf("delete high-frequency task execution logs: %w", highFrequencyResult.Error)
+		}
+		highFrequencyDeleted = highFrequencyResult.RowsAffected
+	}
+
+	lowFrequencyQuery := db.DB(ctx).
+		Where("status IN ?", terminalStatuses).
+		Where("created_at < ?", lowFrequencyCutoff)
+	if len(highFrequencyTaskTypes) > 0 {
+		lowFrequencyQuery = lowFrequencyQuery.Where("task_type NOT IN ?", highFrequencyTaskTypes)
+	}
+	lowFrequencyResult := lowFrequencyQuery.Delete(&TaskExecution{})
+	if lowFrequencyResult.Error != nil {
+		return TaskExecutionCleanupStats{}, fmt.Errorf("delete low-frequency task execution logs: %w", lowFrequencyResult.Error)
+	}
+
+	return TaskExecutionCleanupStats{
+		HighFrequencyDeleted: highFrequencyDeleted,
+		LowFrequencyDeleted:  lowFrequencyResult.RowsAffected,
+	}, nil
+}
+
+func taskExecutionLogRedisKey(taskID string) string {
+	return cachepkg.PrefixedKey(taskExecutionLogRedisKeyPrefix + taskID)
+}
+
+func loadTaskExecutionLog(ctx context.Context, execution *TaskExecution) error {
+	if cachepkg.Redis == nil {
+		return nil
+	}
+
+	logLines, err := cachepkg.Redis.LRange(ctx, taskExecutionLogRedisKey(execution.TaskID), 0, -1).Result()
+	if err != nil {
+		return fmt.Errorf("get task execution log from redis: %w", err)
+	}
+	if len(logLines) == 0 {
+		return nil
+	}
+
+	execution.Log = strings.Join(logLines, "")
+	return nil
+}
+
+func loadTaskExecutionLogs(ctx context.Context, executions []TaskExecution) error {
+	if cachepkg.Redis == nil || len(executions) == 0 {
+		return nil
+	}
+
+	commands := make([]*redis.StringSliceCmd, len(executions))
+	_, err := cachepkg.Redis.Pipelined(ctx, func(pipe redis.Pipeliner) error {
+		for i := range executions {
+			commands[i] = pipe.LRange(ctx, taskExecutionLogRedisKey(executions[i].TaskID), 0, -1)
+		}
+		return nil
+	})
+	if err != nil {
+		return fmt.Errorf("get task execution logs from redis: %w", err)
+	}
+
+	for i := range executions {
+		logLines := commands[i].Val()
+		if len(logLines) > 0 {
+			executions[i].Log = strings.Join(logLines, "")
+		}
+	}
+	return nil
+}

backend/plugins/domain/admin/restart_unix.go

@@ -0,0 +1,50 @@
+//go:build !windows
+
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package admin
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"path/filepath"
+	"syscall"
+
+	"github.com/Rain-kl/Wavelet/backend/pkg/logger"
+)
+
+const installedBinaryMode = 0o755
+
+func replaceAndRestart(executable, stagedBinary string) error {
+	ctx := context.Background()
+	logger.InfoF(ctx, "[Updater] Swapping executable: %s -> %s", executable, stagedBinary)
+	backup := executable + ".old"
+
+	if err := os.Remove(backup); err != nil && !os.IsNotExist(err) {
+		return fmt.Errorf("删除旧备份失败: %w", err)
+	}
+
+	if err := os.Rename(executable, backup); err != nil {
+		return fmt.Errorf("备份当前程序失败: %w", err)
+	}
+
+	if err := os.Rename(stagedBinary, executable); err != nil {
+		_ = os.Rename(backup, executable)
+		return fmt.Errorf("替换当前程序失败: %w", err)
+	}
+
+	if err := os.Chmod(executable, installedBinaryMode); err != nil {
+		_ = os.Remove(executable)
+		_ = os.Rename(backup, executable)
+		return fmt.Errorf("设置程序执行权限失败: %w", err)
+	}
+
+	stagingDir := filepath.Dir(stagedBinary)
+	_ = os.RemoveAll(stagingDir)
+
+	logger.InfoF(ctx, "[Updater] Executing syscall.Exec to restart service: %s %v", executable, os.Args)
+	//nolint:gosec // restart process via exec with same binary and args
+	return syscall.Exec(executable, os.Args, os.Environ())
+}

backend/plugins/domain/admin/restart_windows.go

@@ -0,0 +1,12 @@
+//go:build windows
+
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package admin
+
+import "errors"
+
+func replaceAndRestart(_, _ string) error {
+	return errors.New(errAutomaticUpgradeBlocked)
+}

backend/plugins/domain/admin/system_config_cache.go

@@ -0,0 +1,208 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package admin
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"sync"
+	"time"
+
+	"gorm.io/gorm"
+
+	"github.com/Rain-kl/Wavelet/backend/pkg/cache/ram"
+	"github.com/Rain-kl/Wavelet/backend/pkg/util"
+	cachepkg "github.com/Rain-kl/Wavelet/backend/plugins/infra/cache"
+)
+
+const (
+	// SystemConfigBroadcastChannel broadcasts system config cache updates across nodes.
+	SystemConfigBroadcastChannel = "system:config_broadcast"
+
+	// SystemConfigInvalidationChannel is kept as an alias for backward compatibility.
+	SystemConfigInvalidationChannel = SystemConfigBroadcastChannel
+
+	// SystemConfigRedisHashKey is kept for backward compatibility in tests.
+	SystemConfigRedisHashKey = "system:system_configs"
+	// SystemConfigVisibleListRedisKey is kept for backward compatibility in tests.
+	SystemConfigVisibleListRedisKey = "system:visible_configs"
+
+	// ConfigCacheType is the cache type for all system configs.
+	ConfigCacheType = "config"
+)
+
+type systemConfigBroadcastMessage struct {
+	Type string `json:"type"`
+	Key  string `json:"key"`
+}
+
+// ConfigLoader loads configuration data from the database.
+type ConfigLoader struct{}
+
+// LoadAll loads all system configs from database as CacheItems.
+func (ConfigLoader) LoadAll(ctx context.Context, configType string) ([]ram.CacheItem, error) {
+	configs, err := PreheatSystemConfigs(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	items := make([]ram.CacheItem, len(configs))
+	for i, cfg := range configs {
+		valBytes, err := json.Marshal(cfg)
+		if err != nil {
+			return nil, err
+		}
+		items[i] = ram.CacheItem{
+			Key:   cfg.Key,
+			Value: string(valBytes),
+			Type:  configType,
+			TTL:   determineTTL(cfg.Key),
+		}
+	}
+	return items, nil
+}
+
+// LoadOne loads a single system config from database as a CacheItem.
+func (ConfigLoader) LoadOne(ctx context.Context, configType string, key string) (ram.CacheItem, error) {
+	cfg, err := PreheatSystemConfigByKey(ctx, key)
+	if err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return ram.CacheItem{}, ram.ErrNotFound
+		}
+		return ram.CacheItem{}, err
+	}
+
+	valBytes, err := json.Marshal(cfg)
+	if err != nil {
+		return ram.CacheItem{}, err
+	}
+
+	return ram.CacheItem{
+		Key:   cfg.Key,
+		Value: string(valBytes),
+		Type:  configType,
+		TTL:   determineTTL(cfg.Key),
+	}, nil
+}
+
+// PreloadSystemConfigs warms the in-memory RAM cache from database on startup.
+func PreloadSystemConfigs(ctx context.Context) error {
+	return ram.Refresh(ctx, ConfigCacheType, "", ConfigLoader{})
+}
+
+var (
+	systemConfigListenerOnce   sync.Once
+	systemConfigListenerCtx    context.Context
+	systemConfigListenerCancel context.CancelFunc
+	systemConfigListenerDone   chan struct{}
+)
+
+func ensureSystemConfigCacheListener() {
+	systemConfigListenerOnce.Do(startSystemConfigCacheInvalidationListener)
+}
+
+func startSystemConfigCacheInvalidationListener() {
+	if cachepkg.Redis == nil {
+		return
+	}
+
+	systemConfigListenerCtx, systemConfigListenerCancel = context.WithCancel(context.Background())
+	systemConfigListenerDone = make(chan struct{})
+
+	redisClient := cachepkg.Redis // 捕获当前客户端：goroutine 不读可变全局，避免与测试置空 cachepkg.Redis 竞争
+	util.Go(func() {
+		listenerCtx := systemConfigListenerCtx
+		defer close(systemConfigListenerDone)
+
+		pubsub := redisClient.Subscribe(listenerCtx, SystemConfigBroadcastChannel)
+		defer func() {
+			_ = pubsub.Close()
+		}()
+
+		util.Go(func() {
+			<-listenerCtx.Done()
+			_ = pubsub.Close()
+		})
+
+		for msg := range pubsub.Channel() {
+			var payload systemConfigBroadcastMessage
+			if err := json.Unmarshal([]byte(msg.Payload), &payload); err != nil {
+				ram.UpdateTypeItems(ConfigCacheType, nil)
+				continue
+			}
+
+			key := payload.Key
+			if key == "*" || key == "" {
+				ram.UpdateTypeItems(payload.Type, nil)
+			} else {
+				ram.Delete(payload.Type, key)
+			}
+		}
+	})
+}
+
+// StopSystemConfigCacheListener stops the Redis Pub/Sub subscription listener and resets the sync.Once guard.
+func StopSystemConfigCacheListener() {
+	if systemConfigListenerCancel != nil {
+		systemConfigListenerCancel()
+		if systemConfigListenerDone != nil {
+			<-systemConfigListenerDone
+		}
+		systemConfigListenerCancel = nil
+		systemConfigListenerDone = nil
+	}
+	systemConfigListenerOnce = sync.Once{}
+}
+
+func determineTTL(_ string) time.Duration {
+	// Program-determined TTL: -1 means never expire for all configs by default
+	return -1
+}
+
+// InvalidateSystemConfigCache triggers a broadcast to refresh the cache for key.
+func InvalidateSystemConfigCache(ctx context.Context, key string) error {
+	ensureSystemConfigCacheListener()
+
+	// Invalidate local cache synchronously first
+	ram.Delete(ConfigCacheType, key)
+
+	// Broadcast to other nodes and clean legacy Redis cache key
+	if cachepkg.Redis != nil {
+		_ = cachepkg.HDel(ctx, SystemConfigRedisHashKey, key)
+		publishSystemConfigBroadcast(ctx, ConfigCacheType, key)
+	}
+	return nil
+}
+
+// InvalidateAllSystemConfigCaches triggers a broadcast to refresh the entire config cache.
+func InvalidateAllSystemConfigCaches(ctx context.Context) error {
+	ensureSystemConfigCacheListener()
+
+	// Invalidate all items of type ConfigCacheType synchronously first
+	ram.UpdateTypeItems(ConfigCacheType, nil)
+
+	// Broadcast to other nodes and clean legacy Redis cache keys
+	if cachepkg.Redis != nil {
+		_ = cachepkg.Redis.Del(ctx, cachepkg.PrefixedKey(SystemConfigRedisHashKey), cachepkg.PrefixedKey(SystemConfigVisibleListRedisKey)).Err()
+		publishSystemConfigBroadcast(ctx, ConfigCacheType, "*")
+	}
+	return nil
+}
+
+func publishSystemConfigBroadcast(ctx context.Context, configType string, key string) {
+	if cachepkg.Redis == nil {
+		return
+	}
+	payload, err := json.Marshal(systemConfigBroadcastMessage{Type: configType, Key: key})
+	if err != nil {
+		return
+	}
+	_ = cachepkg.Redis.Publish(ctx, SystemConfigBroadcastChannel, payload).Err()
+}
+
+// ResetSystemConfigRAMCacheForTest clears only the process-local RAM cache.
+func ResetSystemConfigRAMCacheForTest() {
+	ram.ResetForTest()
+}

backend/plugins/domain/admin/system_config_test.go

@@ -0,0 +1,158 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package admin
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/alicebob/miniredis/v2"
+	"github.com/glebarez/sqlite"
+	"github.com/redis/go-redis/v9"
+	"github.com/redis/go-redis/v9/maintnotifications"
+	"gorm.io/gorm"
+
+	"github.com/Rain-kl/Wavelet/backend/plugins/infra/cache"
+	"github.com/Rain-kl/Wavelet/backend/plugins/infra/database"
+)
+
+func setupSystemConfigTest(t *testing.T) (*gorm.DB, func()) {
+	t.Helper()
+
+	sqliteDB, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{
+		DisableForeignKeyConstraintWhenMigrating: true,
+	})
+	if err != nil {
+		t.Fatalf("gorm.Open(sqlite) error = %v", err)
+	}
+	if err := sqliteDB.AutoMigrate(&SystemConfig{}); err != nil {
+		t.Fatalf("AutoMigrate(SystemConfig) error = %v", err)
+	}
+
+	siteConfig := SystemConfig{
+		Key:         ConfigKeySiteName,
+		Value:       "Wavelet",
+		Type:        "system",
+		Description: "系统平台的展示名称",
+	}
+	if err := sqliteDB.Create(&siteConfig).Error; err != nil {
+		t.Fatalf("Create(site_name) error = %v", err)
+	}
+
+	mr, err := miniredis.Run()
+	if err != nil {
+		t.Fatalf("miniredis.Run() error = %v", err)
+	}
+	redisClient := redis.NewClient(&redis.Options{
+		Addr: mr.Addr(),
+		MaintNotificationsConfig: &maintnotifications.Config{
+			Mode: maintnotifications.ModeDisabled,
+		},
+	})
+
+	previousRedis := cache.Redis
+	database.SetDB(sqliteDB)
+	cache.Redis = redisClient
+
+	cleanup := func() {
+		StopSystemConfigCacheListener()
+		ResetSystemConfigRAMCacheForTest()
+		database.SetDB(nil)
+		cache.Redis = previousRedis
+		_ = redisClient.Close()
+		mr.Close()
+	}
+
+	return sqliteDB, cleanup
+}
+
+func TestListSystemConfigsByKeys_EmptyKeys(t *testing.T) {
+	result, err := ListSystemConfigsByKeys(context.Background(), nil)
+	if err != nil {
+		t.Fatalf("ListSystemConfigsByKeys(nil) error = %v", err)
+	}
+	if len(result) != 0 {
+		t.Fatalf("ListSystemConfigsByKeys(nil) = %#v, want empty map", result)
+	}
+}
+
+func TestListSystemConfigsByKeys_LoadsFromRAMCache(t *testing.T) {
+	dbConn, cleanup := setupSystemConfigTest(t)
+	defer cleanup()
+	ctx := context.Background()
+
+	ResetSystemConfigRAMCacheForTest()
+
+	// Initial load
+	warm, err := GetSystemConfigByKey(ctx, ConfigKeySiteName)
+	if err != nil {
+		t.Fatalf("GetSystemConfigByKey(site_name) warm error = %v", err)
+	}
+	if warm.Value != "Wavelet" {
+		t.Fatalf("GetSystemConfigByKey(site_name).Value = %q, want %q", warm.Value, "Wavelet")
+	}
+
+	// Update DB directly
+	if err := dbConn.Model(&SystemConfig{}).
+		Where("key = ?", ConfigKeySiteName).
+		Update("value", "db_only_value").Error; err != nil {
+		t.Fatalf("Update(site_name) error = %v", err)
+	}
+
+	// Fetch via ListSystemConfigsByKeys should serve from local store (meaning the old value "Wavelet")
+	configs, err := ListSystemConfigsByKeys(ctx, []string{ConfigKeySiteName})
+	if err != nil {
+		t.Fatalf("ListSystemConfigsByKeys(site_name) error = %v", err)
+	}
+
+	sc, ok := configs[ConfigKeySiteName]
+	if !ok {
+		t.Fatal("ListSystemConfigsByKeys(site_name) missing site_name entry")
+	}
+	if sc.Value != "Wavelet" {
+		t.Fatalf("ListSystemConfigsByKeys(site_name).Value = %q, want cached value %q", sc.Value, "Wavelet")
+	}
+}
+
+func TestGetSystemConfigByGroupAndInvalidation(t *testing.T) {
+	dbConn, cleanup := setupSystemConfigTest(t)
+	defer cleanup()
+	ctx := context.Background()
+
+	ResetSystemConfigRAMCacheForTest()
+
+	// Get via specific group/type
+	cfg, err := GetSystemConfigByGroup(ctx, ConfigCacheType, ConfigKeySiteName)
+	if err != nil {
+		t.Fatalf("GetSystemConfigByGroup error = %v", err)
+	}
+	if cfg.Value != "Wavelet" {
+		t.Fatalf("value = %q, want %q", cfg.Value, "Wavelet")
+	}
+
+	// Direct DB update
+	if err := dbConn.Model(&SystemConfig{}).
+		Where("key = ?", ConfigKeySiteName).
+		Update("value", "new_site_name").Error; err != nil {
+		t.Fatalf("DB Update error = %v", err)
+	}
+
+	// Invalidate
+	if err := InvalidateSystemConfigCache(ctx, ConfigKeySiteName); err != nil {
+		t.Fatalf("InvalidateSystemConfigCache error = %v", err)
+	}
+
+	// Wait for broadcast execution
+	time.Sleep(100 * time.Millisecond)
+
+	// Fetch again
+	updated, err := GetSystemConfigByKey(ctx, ConfigKeySiteName)
+	if err != nil {
+		t.Fatalf("GetSystemConfigByKey error = %v", err)
+	}
+	if updated.Value != "new_site_name" {
+		t.Fatalf("value = %q, want %q", updated.Value, "new_site_name")
+	}
+}