v0.3.4: redis_status returns Chinese labels for frontend color

- db-status endpoint: redis_status returns 已连接/未连接/错误 instead of English
- Frontend compares k.redis_status === "已连接" → green text-success badge
- English connected was not matching, always showed yellow text-warning

source_clean/src/routes/admin.routes.ts

@@ -425,9 +425,9 @@ router.get('/admin/db-status', async (_req: Request, res: Response) => {
     let redis_url = getSystemConfig('redis_url') || '';
     try {
       const testResult = await testRedisConnection(redis_url);
-      redis_status = testResult.ok ? 'connected' : 'disconnected';
+      redis_status = testResult.ok ? '已连接' : '未连接';
     } catch {
-      redis_status = 'error';
+      redis_status = '错误';
     }
 
     res.json({