chore: 添加虚拟环境到仓库

- 添加 backend_service/venv 虚拟环境
- 包含所有Python依赖包
- 注意：虚拟环境约393MB，包含12655个文件

backend_service/venv/lib/python3.13/site-packages/chromadb/quota/__init__.py

@@ -0,0 +1,71 @@
+from abc import abstractmethod
+from enum import Enum
+from typing import Dict, Any, Optional
+from uuid import UUID
+
+from chromadb.api.types import (
+    Embeddings,
+    Metadatas,
+    Documents,
+    URIs,
+    IDs,
+    CollectionMetadata,
+    Where,
+    WhereDocument,
+)
+from chromadb.config import Component, System
+
+
+class Action(str, Enum):
+    CREATE_DATABASE = "create_database"
+    CREATE_COLLECTION = "create_collection"
+    LIST_COLLECTIONS = "list_collections"
+    UPDATE_COLLECTION = "update_collection"
+    ADD = "add"
+    GET = "get"
+    DELETE = "delete"
+    UPDATE = "update"
+    UPSERT = "upsert"
+    QUERY = "query"
+
+
+class QuotaEnforcer(Component):
+    """
+    Exposes hooks to enforce quotas.
+    """
+
+    def __init__(self, system: System) -> None:
+        super().__init__(system)
+
+    @abstractmethod
+    def set_context(self, context: Dict[str, Any]) -> None:
+        """
+        Sets the context for a given request.
+        """
+        pass
+
+    @abstractmethod
+    def enforce(
+        self,
+        action: Action,
+        tenant: str,
+        metadatas: Optional[Metadatas] = None,
+        documents: Optional[Documents] = None,
+        embeddings: Optional[Embeddings] = None,
+        uris: Optional[URIs] = None,
+        ids: Optional[IDs] = None,
+        name: Optional[str] = None,
+        new_name: Optional[str] = None,
+        metadata: Optional[CollectionMetadata] = None,
+        new_metadata: Optional[CollectionMetadata] = None,
+        limit: Optional[int] = None,
+        where: Optional[Where] = None,
+        where_document: Optional[WhereDocument] = None,
+        n_results: Optional[int] = None,
+        query_embeddings: Optional[Embeddings] = None,
+        collection_id: Optional[UUID] = None,
+    ) -> None:
+        """
+        Enforces a quota.
+        """
+        pass

backend_service/venv/lib/python3.13/site-packages/chromadb/quota/simple_quota_enforcer/__init__.py

@@ -0,0 +1,54 @@
+from overrides import override
+from typing import Any, Callable, TypeVar, Dict, Optional
+from uuid import UUID
+
+from chromadb.api.types import (
+    Embeddings,
+    Metadatas,
+    Documents,
+    URIs,
+    IDs,
+    CollectionMetadata,
+    Where,
+    WhereDocument,
+)
+from chromadb.quota import QuotaEnforcer, Action
+from chromadb.config import System
+
+T = TypeVar("T", bound=Callable[..., Any])
+
+
+class SimpleQuotaEnforcer(QuotaEnforcer):
+    """
+    A naive implementation of a quota enforcer that allows all requests.
+    """
+
+    def __init__(self, system: System) -> None:
+        super().__init__(system)
+
+    @override
+    def set_context(self, context: Dict[str, Any]) -> None:
+        pass
+
+    @override
+    def enforce(
+        self,
+        action: Action,
+        tenant: str,
+        metadatas: Optional[Metadatas] = None,
+        documents: Optional[Documents] = None,
+        embeddings: Optional[Embeddings] = None,
+        uris: Optional[URIs] = None,
+        ids: Optional[IDs] = None,
+        name: Optional[str] = None,
+        new_name: Optional[str] = None,
+        metadata: Optional[CollectionMetadata] = None,
+        new_metadata: Optional[CollectionMetadata] = None,
+        limit: Optional[int] = None,
+        where: Optional[Where] = None,
+        where_document: Optional[WhereDocument] = None,
+        n_results: Optional[int] = None,
+        query_embeddings: Optional[Embeddings] = None,
+        collection_id: Optional[UUID] = None,
+    ) -> None:
+        pass