ok

app/api/server.py

@@ -11,7 +11,6 @@ from app.api.v1.router import api_v1_router
 from app.api.v1.system import is_maintenance
 from app.config import get_settings
 from app.core.auth.deps import init_auth_db
-from app.core.banner import get_banner
 from app.core.database import pool_manager
 from app.core.logger import get_logger
 from app.core.redis_client import close_redis, create_redis_client
@@ -45,9 +44,6 @@ async def _self_ping():
 
 @asynccontextmanager
 async def lifespan(app: FastAPI):
-    print(get_banner())
-    print("=" * 60)
-    print()
     if not _settings.tidb_instance_list:
         _logger.error(
             "No TiDB instances configured! Set TIDB_INSTANCES environment variable "

app/core/vector_store/deps.py

@@ -17,7 +17,7 @@ VS_TABLES: dict[str, str] = {
             name VARCHAR(255) NOT NULL,
             path VARCHAR(1024) NOT NULL,
             description VARCHAR(1024) DEFAULT '',
-            metadata_json TEXT DEFAULT '{}',
+            metadata_json TEXT,
             created_at VARCHAR(64) NOT NULL
         ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4
     """,