{"success":true,"data":"{\n  \"message\": \"🚀 知识库 API 运行中\",\n  \"status\": \"healthy\",\n  \"timestamp\": \"2026-05-05T03:54:42.846Z\",\n  \"services\": {\n    \"database\": \"✅ Connected\",\n    \"gemini\": \"✅ Initialized\"\n  }\n}"}