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/services/config-sync.ts

@@ -0,0 +1,7 @@
+import request, { withSignal } from './request'
+import type { ConfigSyncLog, PaginatedResponse } from '@/types'
+
+export const configSyncService = {
+  list: (params?: Record<string, unknown>, signal?: AbortSignal) =>
+    request.get<PaginatedResponse<ConfigSyncLog>>('/config/sync-logs', withSignal({ params }, signal)).then((r) => r.data),
+}