feat(admin): add ConfigSync page + close ADMIN-01/02 (AUDIT_TRACKER)

- ADMIN-01 FIXED: ConfigSync.tsx page with ProTable + pagination
  - config-sync service calling GET /config/sync-logs
  - route + nav item + breadcrumb
  - backend @reserved → @connected
- ADMIN-02 FALSE_POSITIVE: Logs.tsx + logs service already exist

admin-v2/src/router/index.tsx

@@ -35,6 +35,7 @@ export const router = createBrowserRouter([
       { path: 'config', lazy: () => import('@/pages/Config').then((m) => ({ Component: m.default })) },
       { path: 'prompts', lazy: () => import('@/pages/Prompts').then((m) => ({ Component: m.default })) },
       { path: 'logs', lazy: () => import('@/pages/Logs').then((m) => ({ Component: m.default })) },
+      { path: 'config-sync', lazy: () => import('@/pages/ConfigSync').then((m) => ({ Component: m.default })) },
     ],
   },
 ])