feat(web): 新增『虎牙设备绑定』管理页 — 一号一环境可视化

后端 (/huya/device-bindings):
- GET: 三方合并列表 (设备画像 + hydevice 指纹状态 + 账号表登录渠道)
  标识脱敏展示 (fingerprint/guid32 只留前12位)
- DELETE: 解绑 = 删除画像 + hydevice 状态 → 下次登录自动生成全新环境重新注册
前端:
- HuyaDeviceBindingsPage: 汇总卡片(绑定数/指纹状态/入库账号) + 明细表
  (机型/屏幕/CDID40/GUID32/Hebe/hydevice状态/登录渠道/最后登录) + 解绑重绑
- 路由 /huya/device-bindings + 菜单『设备绑定』(账号管理之下)

web/frontend/src/App.tsx

@@ -23,6 +23,7 @@ const HuyaAccountsPage = lazy(() => import('./pages/HuyaAccountsPage'));
 const HuyaAssignmentsPage = lazy(() => import('./pages/HuyaAssignmentsPage'));
 const HuyaCookiePage = lazy(() => import('./pages/HuyaCookiePage'));
 const HuyaRegisterPage = lazy(() => import('./pages/HuyaRegisterPage'));
+const HuyaDeviceBindingsPage = lazy(() => import('./pages/HuyaDeviceBindingsPage'));
 const HuyaTasksPage = lazy(() => import('./pages/HuyaTasksPage'));
 const YybRechargePage = lazy(() => import('./pages/YybRechargePage'));
 const AuditLogsPage = lazy(() => import('./pages/AuditLogsPage'));
@@ -88,6 +89,7 @@ function AppContent() {
               <Route path="douyu/esports" element={lazyRoute(<DouyuTasksPage key="esports" handbook="esports" />)} />
               <Route path="douyu/peace" element={lazyRoute(<DouyuTasksPage key="peace" handbook="peace" />)} />
               <Route path="huya/accounts" element={lazyRoute(<HuyaAccountsPage />)} />
+              <Route path="huya/device-bindings" element={lazyRoute(<HuyaDeviceBindingsPage />)} />
               <Route path="huya/register" element={lazyRoute(<HuyaRegisterPage />)} />
               <Route path="huya/assignments" element={lazyRoute(<HuyaAssignmentsPage />)} />
               <Route path="huya/cookies" element={lazyRoute(<HuyaCookiePage />)} />