feat: enhance vector database configuration handling and improve provider initialization

domain/ai/vector_providers/milvus_lite.py

@@ -1,3 +1,4 @@
+import asyncio
 from pathlib import Path
 from typing import Any, Dict, List, Optional
 
@@ -23,12 +24,14 @@ class MilvusLiteProvider(BaseVectorProvider):
 
     def __init__(self, config: Dict[str, Any] | None = None):
         super().__init__(config)
-        self.db_path = Path(self.config.get("db_path") or "data/db/milvus.db")
+        raw_db_path = self.config.get("db_path")
+        db_path = str(raw_db_path).strip() if raw_db_path is not None else ""
+        self.db_path = Path(db_path or "data/db/milvus.db")
         self.client: MilvusClient | None = None
 
     async def initialize(self) -> None:
         try:
-            self.client = MilvusClient(str(self.db_path))
+            self.client = await asyncio.to_thread(MilvusClient, str(self.db_path))
         except Exception as exc:  # pragma: no cover - depends on local environment
             raise RuntimeError(f"Failed to open Milvus Lite at {self.db_path}: {exc}") from exc
 

domain/ai/vector_providers/milvus_server.py

@@ -1,3 +1,4 @@
+import asyncio
 from typing import Any, Dict, List, Optional
 
 from pymilvus import CollectionSchema, DataType, FieldSchema, MilvusClient
@@ -32,11 +33,14 @@ class MilvusServerProvider(BaseVectorProvider):
         self.client: MilvusClient | None = None
 
     async def initialize(self) -> None:
-        uri = self.config.get("uri")
+        uri = str(self.config.get("uri") or "").strip()
         if not uri:
             raise RuntimeError("Milvus Server URI is required")
+        token = self.config.get("token")
+        if isinstance(token, str):
+            token = token.strip() or None
         try:
-            self.client = MilvusClient(uri=uri, token=self.config.get("token"))
+            self.client = await asyncio.to_thread(MilvusClient, uri=uri, token=token)
         except Exception as exc:  # pragma: no cover - depends on remote availability
             raise RuntimeError(f"Failed to connect to Milvus Server {uri}: {exc}") from exc
 

domain/ai/vector_providers/qdrant.py

@@ -1,3 +1,4 @@
+import asyncio
 from typing import Any, Dict, List, Optional, Sequence
 from uuid import NAMESPACE_URL, uuid5
 
@@ -40,7 +41,7 @@ class QdrantProvider(BaseVectorProvider):
         api_key = (self.config.get("api_key") or None) or None
         try:
             client = QdrantClient(url=url, api_key=api_key)
-            client.get_collections()
+            await asyncio.to_thread(client.get_collections)
             self.client = client
         except Exception as exc:  # pragma: no cover - 依赖外部服务
             raise RuntimeError(f"Failed to connect to Qdrant at {url}: {exc}") from exc