Merge branch 'develop' of http://47.106.207.27:3000/AI260626/Mutual_Fund into develop_feature_customer

# Conflicts:
#	.gitignore
#	api/deps.py
#	api/router.py
#	main.py
#	tests/test_customer_agent_router.py
#	tests/test_knowledge_router.py

config/database/milvus.py

@@ -34,6 +34,16 @@ def client() -> AsyncMilvusClient:
     return _client
 
 
+async def ensure_database(milvus_client: AsyncMilvusClient | None = None) -> None:
+    """Create the configured project database only when it does not exist."""
+    target = milvus_client or client()
+    database_name = settings.milvus.db_name
+    if not database_name:
+        raise RuntimeError("MILVUS_DB must be configured")
+    if database_name not in await target.list_databases():
+        await target.create_database(database_name)
+
+
 async def init_db() -> None:
     client()  # 急切建连；失败由注册表重试（config/database/__init__.py）