feat: site management + cross-site torrent search

Port the complete site management system from the original MediaStation:

Model:
  - model/model.go: Added Site table with fields for name, base_url,
    site_type (nexusphp/gazelle/unit3d/mteam/custom_rss), auth_type
    (cookie/api_key/authorization), cookie, api_key, auth_header,
    user_agent, rss_url, timeout, priority, use_proxy, enabled,
    login_status, downloader. Registered in AllModels().

Backend services:
  - service/site.go: SiteService with CRUD (Create/List/FindByID/Update/
    Delete), TestConnection (validates credentials via HTTP, updates
    login_status in DB), and Search (cross-site fan-out that queries
    every enabled site adapter and returns merged results sorted by
    seeders descending).
  - service/site_adapter.go: SiteAdapter interface + NewSiteAdapter
    factory + 5 implementations:
    * nexusPhpAdapter — regex HTML scraping of torrents.php
    * gazelleAdapter — JSON API /ajax.php?action=browse
    * unit3dAdapter — REST API /api/torrents/filter
    * mteamAdapter — M-Team v3 POST /api/torrent/search with x-api-key
    * rssAdapter — XML RSS/Atom feed parsing with keyword filter

Handler + routes:
  - handler/sites.go: listSites, getSite, createSite, updateSite,
    deleteSite, testSite, siteSearch handlers.
  - handler/handler.go: 7 new routes under authed group:
    GET/POST /sites, GET/PUT/DELETE /sites/:id,
    POST /sites/:id/test, GET /sites/search.

Frontend:
  - api/sites.ts: typed interfaces (Site, SiteSearchResult,
    CreateSiteInput) and sitesAPI helper.
  - pages/SitesPage.tsx: full CRUD UI with add-site form (site_type +
    auth_type selectors, cookie/api_key/rss inputs), connection test
    button with live status indicator, delete action.
  - pages/SiteSearchPage.tsx: cross-site search with keyword input,
    merged result table (site/title/size/seeders/leechers/free),
    one-click download-to-qBittorrent button.
  - App.tsx: lazy-loaded routes /sites and /site-search.
  - Layout.tsx: sidebar links 站点管理 + 站点搜索 under 自动化 group.

Verified: go build + go vet + go test pass; tsc -b + vite build passes
(32 lazy chunks, main bundle 255 KB / 85 KB gzipped).

web/src/App.tsx

@@ -69,6 +69,12 @@ const WatchHistoryPage = lazy(() =>
 const PosterWallPage = lazy(() =>
   import('./pages/PosterWallPage').then((m) => ({ default: m.PosterWallPage })),
 )
+const SitesPage = lazy(() =>
+  import('./pages/SitesPage').then((m) => ({ default: m.SitesPage })),
+)
+const SiteSearchPage = lazy(() =>
+  import('./pages/SiteSearchPage').then((m) => ({ default: m.SiteSearchPage })),
+)
 
 const Loading = () => <p className="px-6 py-8 text-slate-500">加载中…</p>
 
@@ -100,6 +106,8 @@ export default function App() {
           <Route path="dlna" element={<DlnaPage />} />
           <Route path="history" element={<WatchHistoryPage />} />
           <Route path="poster-wall" element={<PosterWallPage />} />
+          <Route path="sites" element={<SitesPage />} />
+          <Route path="site-search" element={<SiteSearchPage />} />
           <Route
             path="files"
             element={

web/src/api/sites.ts

@@ -0,0 +1,77 @@
+import { api } from './client'
+
+export interface Site {
+  id: string
+  name: string
+  base_url: string
+  site_type: string
+  auth_type: string
+  cookie?: string
+  api_key?: string
+  auth_header?: string
+  user_agent?: string
+  rss_url?: string
+  timeout: number
+  priority: number
+  use_proxy: boolean
+  enabled: boolean
+  login_status: string
+  downloader?: string
+  created_at: string
+  updated_at: string
+}
+
+export interface SiteSearchResult {
+  site_name: string
+  site_id: string
+  title: string
+  torrent_url: string
+  download_url: string
+  size: number
+  seeders: number
+  leechers: number
+  free: boolean
+}
+
+export interface CreateSiteInput {
+  name: string
+  base_url: string
+  site_type?: string
+  auth_type?: string
+  cookie?: string
+  api_key?: string
+  auth_header?: string
+  user_agent?: string
+  rss_url?: string
+  timeout?: number
+  priority?: number
+  use_proxy?: boolean
+  enabled?: boolean
+  downloader?: string
+}
+
+export const sitesAPI = {
+  list: () => api.get<{ items: Site[] }>('/sites').then((r) => r.data.items),
+
+  get: (id: string) => api.get<Site>(`/sites/${id}`).then((r) => r.data),
+
+  create: (input: CreateSiteInput) =>
+    api.post<Site>('/sites', input).then((r) => r.data),
+
+  update: (id: string, patch: Partial<CreateSiteInput>) =>
+    api.put<Site>(`/sites/${id}`, patch).then((r) => r.data),
+
+  remove: (id: string) => api.delete(`/sites/${id}`).then((r) => r.data),
+
+  test: (id: string) =>
+    api
+      .post<{ success: boolean; message: string }>(`/sites/${id}/test`)
+      .then((r) => r.data),
+
+  search: (keyword: string) =>
+    api
+      .get<{ items: SiteSearchResult[]; total: number }>('/sites/search', {
+        params: { keyword },
+      })
+      .then((r) => r.data),
+}

web/src/components/Layout.tsx

@@ -9,10 +9,11 @@ import {
   Copy,
   Film,
   FolderTree,
+  GalleryHorizontalEnd,
+  Globe,
   HardDrive,
   Heart,
   Home,
-  GalleryHorizontalEnd,
   KeyRound,
   ListChecks,
   ListMusic,
@@ -86,6 +87,8 @@ export function Layout() {
           <SidebarLink to="/downloads" icon={<CloudDownload size={18} />} label="下载" />
           <SidebarLink to="/subscriptions" icon={<Rss size={18} />} label="RSS 订阅" />
           <SidebarLink to="/dlna" icon={<Cast size={18} />} label="DLNA 投屏" />
+          <SidebarLink to="/sites" icon={<Globe size={18} />} label="站点管理" />
+          <SidebarLink to="/site-search" icon={<Search size={18} />} label="站点搜索" />
 
           <div className="mt-6 px-2 text-xs uppercase tracking-wider text-slate-500">
             账号

web/src/pages/SiteSearchPage.tsx

@@ -0,0 +1,161 @@
+import { FormEvent, useState } from 'react'
+import toast from 'react-hot-toast'
+import { Download, Search } from 'lucide-react'
+
+import { sitesAPI, type SiteSearchResult } from '../api/sites'
+import { downloadsAPI } from '../api/downloads'
+
+function fmtBytes(n: number): string {
+  if (!n || n <= 0) return '—'
+  const u = ['B', 'KB', 'MB', 'GB', 'TB']
+  let v = n
+  let i = 0
+  while (v >= 1024 && i < u.length - 1) {
+    v /= 1024
+    i++
+  }
+  return `${v.toFixed(1)} ${u[i]}`
+}
+
+// SiteSearchPage performs cross-site torrent search across all enabled
+// sites and displays a merged result table sorted by seeders.
+export function SiteSearchPage() {
+  const [keyword, setKeyword] = useState('')
+  const [results, setResults] = useState<SiteSearchResult[]>([])
+  const [loading, setLoading] = useState(false)
+  const [searched, setSearched] = useState(false)
+
+  const onSubmit = async (e: FormEvent) => {
+    e.preventDefault()
+    if (!keyword.trim()) return
+    setLoading(true)
+    setSearched(true)
+    try {
+      const data = await sitesAPI.search(keyword.trim())
+      setResults(data.items || [])
+      if ((data.items || []).length === 0) {
+        toast('未找到结果,请检查站点配置或更换关键词')
+      }
+    } catch (err: unknown) {
+      const msg =
+        (err as { response?: { data?: { error?: string } } })?.response?.data?.error ??
+        '搜索失败'
+      toast.error(msg)
+    } finally {
+      setLoading(false)
+    }
+  }
+
+  const downloadTorrent = async (item: SiteSearchResult) => {
+    const url = item.download_url || item.torrent_url
+    if (!url) {
+      toast.error('无可用下载链接')
+      return
+    }
+    try {
+      await downloadsAPI.add(url)
+      toast.success(`已加入下载: ${item.title.substring(0, 40)}...`)
+    } catch (err: unknown) {
+      const msg =
+        (err as { response?: { data?: { error?: string } } })?.response?.data?.error ??
+        '下载失败'
+      toast.error(msg)
+    }
+  }
+
+  return (
+    <div className="space-y-6">
+      <header className="flex items-center gap-3">
+        <Search className="h-6 w-6 text-primary-400" />
+        <div>
+          <h1 className="font-display text-3xl font-bold text-white">站点搜索</h1>
+          <p className="text-sm text-slate-400">
+            跨站搜索所有已启用的 PT/BT 站点,结果按做种数排序。
+          </p>
+        </div>
+      </header>
+
+      <form onSubmit={onSubmit} className="flex gap-2">
+        <input
+          autoFocus
+          className="input-base flex-1"
+          placeholder="输入关键词搜索(如: 流浪地球 / Dune 2024)"
+          value={keyword}
+          onChange={(e) => setKeyword(e.target.value)}
+        />
+        <button type="submit" disabled={loading} className="neon-button">
+          {loading ? '搜索中…' : '搜索'}
+        </button>
+      </form>
+
+      {loading && <p className="text-slate-500">正在查询所有站点…</p>}
+
+      {!loading && searched && results.length === 0 && (
+        <div className="glass-panel">
+          <p className="text-slate-300">
+            未找到结果。请确认已在「站点管理」中添加并启用了至少一个站点,且 Cookie / API Key 有效。
+          </p>
+        </div>
+      )}
+
+      {results.length > 0 && (
+        <div className="glass-panel overflow-x-auto">
+          <table className="w-full text-left text-sm">
+            <thead className="text-xs uppercase tracking-wider text-slate-500">
+              <tr>
+                <th className="py-2">站点</th>
+                <th>标题</th>
+                <th>大小</th>
+                <th>S</th>
+                <th>L</th>
+                <th>Free</th>
+                <th className="text-right">操作</th>
+              </tr>
+            </thead>
+            <tbody>
+              {results.map((item, idx) => (
+                <tr key={idx} className="border-t border-white/5 align-top">
+                  <td className="py-2 text-primary-400">{item.site_name}</td>
+                  <td className="max-w-md py-2">
+                    <a
+                      href={item.torrent_url}
+                      target="_blank"
+                      rel="noopener noreferrer"
+                      className="text-white transition hover:text-primary-400"
+                      title={item.title}
+                    >
+                      {item.title.length > 80
+                        ? item.title.substring(0, 80) + '…'
+                        : item.title}
+                    </a>
+                  </td>
+                  <td className="whitespace-nowrap text-slate-300">
+                    {fmtBytes(item.size)}
+                  </td>
+                  <td className="text-emerald-400">{item.seeders || '—'}</td>
+                  <td className="text-red-400">{item.leechers || '—'}</td>
+                  <td>
+                    {item.free && (
+                      <span className="rounded border border-emerald-400/40 px-1.5 py-0.5 text-xs text-emerald-400">
+                        Free
+                      </span>
+                    )}
+                  </td>
+                  <td className="py-2 text-right">
+                    <button
+                      onClick={() => downloadTorrent(item)}
+                      className="rounded border border-primary-400/40 px-2 py-1 text-xs text-primary-400 hover:bg-primary-400/10"
+                      title="加入下载"
+                    >
+                      <Download size={12} className="inline" />
+                    </button>
+                  </td>
+                </tr>
+              ))}
+            </tbody>
+          </table>
+        </div>
+      )}
+    </div>
+  )
+}

web/src/pages/SitesPage.tsx

@@ -0,0 +1,258 @@
+import { FormEvent, useEffect, useState } from 'react'
+import toast from 'react-hot-toast'
+import { Globe, Plus, Trash2, Wifi, WifiOff } from 'lucide-react'
+
+import { sitesAPI, type Site } from '../api/sites'
+
+const SITE_TYPES = [
+  { value: 'nexusphp', label: 'NexusPHP (大多数国内PT站)' },
+  { value: 'gazelle', label: 'Gazelle (HDBits/OPS/RED)' },
+  { value: 'unit3d', label: 'UNIT3D (BeyondHD/BluTopia)' },
+  { value: 'mteam', label: 'M-Team (馒头)' },
+  { value: 'custom_rss', label: '自定义 RSS' },
+]
+
+const AUTH_TYPES = [
+  { value: 'cookie', label: 'Cookie' },
+  { value: 'api_key', label: 'API Key / Passkey' },
+  { value: 'authorization', label: 'Authorization Header' },
+]
+
+// SitesPage manages PT/BT tracker sites — CRUD + connection test.
+export function SitesPage() {
+  const [sites, setSites] = useState<Site[]>([])
+  const [loading, setLoading] = useState(true)
+  const [showForm, setShowForm] = useState(false)
+
+  const refresh = () =>
+    sitesAPI
+      .list()
+      .then(setSites)
+      .finally(() => setLoading(false))
+
+  useEffect(() => {
+    refresh()
+  }, [])
+
+  const testSite = async (id: string) => {
+    try {
+      const r = await sitesAPI.test(id)
+      if (r.success) {
+        toast.success(r.message)
+      } else {
+        toast.error(r.message)
+      }
+      await refresh()
+    } catch {
+      toast.error('连接测试失败')
+    }
+  }
+
+  const deleteSite = async (site: Site) => {
+    if (!confirm(`确定删除站点「${site.name}」?`)) return
+    await sitesAPI.remove(site.id)
+    toast.success('已删除')
+    await refresh()
+  }
+
+  return (
+    <div className="space-y-6">
+      <header className="flex items-center justify-between">
+        <div className="flex items-center gap-3">
+          <Globe className="h-6 w-6 text-primary-400" />
+          <div>
+            <h1 className="font-display text-3xl font-bold text-white">站点管理</h1>
+            <p className="text-sm text-slate-400">
+              添加 PT/BT 站点后可进行跨站资源搜索和自动下载。
+            </p>
+          </div>
+        </div>
+        <button onClick={() => setShowForm(!showForm)} className="neon-button">
+          <Plus size={16} /> 添加站点
+        </button>
+      </header>
+
+      {showForm && <AddSiteForm onCreated={() => { setShowForm(false); refresh() }} />}
+
+      {loading && <p className="text-slate-500">加载中…</p>}
+      {!loading && sites.length === 0 && (
+        <div className="glass-panel">
+          <p className="text-slate-300">
+            还没有配置任何站点。点击"添加站点"开始配置你的 PT/BT 资源站。
+          </p>
+        </div>
+      )}
+
+      <div className="space-y-3">
+        {sites.map((site) => (
+          <div key={site.id} className="glass-panel flex items-center gap-4 !p-4">
+            <div className="flex-1">
+              <div className="flex items-center gap-2">
+                <p className="font-medium text-white">{site.name}</p>
+                <span className="rounded border border-white/10 bg-white/5 px-1.5 py-0.5 text-xs text-slate-400">
+                  {site.site_type}
+                </span>
+                {site.login_status === 'ok' && (
+                  <Wifi size={14} className="text-emerald-400" />
+                )}
+                {site.login_status === 'fail' && (
+                  <WifiOff size={14} className="text-red-400" />
+                )}
+                {!site.enabled && (
+                  <span className="rounded border border-yellow-400/40 px-1.5 py-0.5 text-xs text-yellow-400">
+                    已禁用
+                  </span>
+                )}
+              </div>
+              <p className="mt-1 font-mono text-xs text-slate-500">{site.base_url}</p>
+            </div>
+            <div className="flex gap-2">
+              <button
+                onClick={() => testSite(site.id)}
+                className="rounded border border-primary-400/40 px-2 py-1 text-xs text-primary-400 hover:bg-primary-400/10"
+              >
+                测试
+              </button>
+              <button
+                onClick={() => deleteSite(site)}
+                className="rounded border border-red-400/40 px-2 py-1 text-xs text-red-400 hover:bg-red-400/10"
+              >
+                <Trash2 size={12} />
+              </button>
+            </div>
+          </div>
+        ))}
+      </div>
+    </div>
+  )
+}
+
+function AddSiteForm({ onCreated }: { onCreated: () => void }) {
+  const [name, setName] = useState('')
+  const [baseURL, setBaseURL] = useState('')
+  const [siteType, setSiteType] = useState('nexusphp')
+  const [authType, setAuthType] = useState('cookie')
+  const [cookie, setCookie] = useState('')
+  const [apiKey, setAPIKey] = useState('')
+  const [rssURL, setRSSURL] = useState('')
+  const [saving, setSaving] = useState(false)
+
+  const submit = async (e: FormEvent) => {
+    e.preventDefault()
+    setSaving(true)
+    try {
+      await sitesAPI.create({
+        name,
+        base_url: baseURL,
+        site_type: siteType,
+        auth_type: authType,
+        cookie: authType === 'cookie' ? cookie : undefined,
+        api_key: authType === 'api_key' ? apiKey : undefined,
+        rss_url: siteType === 'custom_rss' ? rssURL : undefined,
+      })
+      toast.success('站点已添加')
+      onCreated()
+    } catch (err: unknown) {
+      const msg =
+        (err as { response?: { data?: { error?: string } } })?.response?.data?.error ??
+        '添加失败'
+      toast.error(msg)
+    } finally {
+      setSaving(false)
+    }
+  }
+
+  return (
+    <form onSubmit={submit} className="glass-panel space-y-3">
+      <div className="grid gap-3 md:grid-cols-2">
+        <label className="block">
+          <span className="mb-1 block text-xs text-slate-400">站点名称</span>
+          <input
+            required
+            className="input-base"
+            placeholder="如: 馒头 / HDSky / OPS"
+            value={name}
+            onChange={(e) => setName(e.target.value)}
+          />
+        </label>
+        <label className="block">
+          <span className="mb-1 block text-xs text-slate-400">站点地址</span>
+          <input
+            required
+            className="input-base"
+            placeholder="https://example.com"
+            value={baseURL}
+            onChange={(e) => setBaseURL(e.target.value)}
+          />
+        </label>
+        <label className="block">
+          <span className="mb-1 block text-xs text-slate-400">站点类型</span>
+          <select
+            className="input-base"
+            value={siteType}
+            onChange={(e) => setSiteType(e.target.value)}
+          >
+            {SITE_TYPES.map((t) => (
+              <option key={t.value} value={t.value}>
+                {t.label}
+              </option>
+            ))}
+          </select>
+        </label>
+        <label className="block">
+          <span className="mb-1 block text-xs text-slate-400">认证方式</span>
+          <select
+            className="input-base"
+            value={authType}
+            onChange={(e) => setAuthType(e.target.value)}
+          >
+            {AUTH_TYPES.map((t) => (
+              <option key={t.value} value={t.value}>
+                {t.label}
+              </option>
+            ))}
+          </select>
+        </label>
+      </div>
+
+      {authType === 'cookie' && (
+        <label className="block">
+          <span className="mb-1 block text-xs text-slate-400">Cookie</span>
+          <textarea
+            className="input-base min-h-[60px]"
+            placeholder="从浏览器 F12 → Network → Cookie 复制"
+            value={cookie}
+            onChange={(e) => setCookie(e.target.value)}
+          />
+        </label>
+      )}
+      {authType === 'api_key' && (
+        <label className="block">
+          <span className="mb-1 block text-xs text-slate-400">API Key / Passkey</span>
+          <input
+            className="input-base"
+            type="password"
+            placeholder="站点生成的 API Token"
+            value={apiKey}
+            onChange={(e) => setAPIKey(e.target.value)}
+          />
+        </label>
+      )}
+      {siteType === 'custom_rss' && (
+        <label className="block">
+          <span className="mb-1 block text-xs text-slate-400">RSS 地址</span>
+          <input
+            className="input-base"
+            placeholder="https://example.com/rss.xml"
+            value={rssURL}
+            onChange={(e) => setRSSURL(e.target.value)}
+          />
+        </label>
+      )}
+
+      <button type="submit" disabled={saving} className="neon-button">
+        {saving ? '添加中…' : '添加站点'}
+      </button>
+    </form>
+  )
+}