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

crates/zclaw-saas/src/migration/handlers.rs

@@ -137,7 +137,7 @@ pub async fn config_diff(
 }
 
 /// GET /api/v1/config/sync-logs?page=1&page_size=20
-// @reserved - no frontend caller
+/// @connected - admin-v2 ConfigSync page
 pub async fn list_sync_logs(
     State(state): State<AppState>,
     Extension(ctx): Extension<AuthContext>,