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/cli/cli.py

@@ -0,0 +1,56 @@
+import re
+import sys
+
+import chromadb_rust_bindings
+import requests
+from packaging.version import parse
+
+import chromadb
+
+
+def build_cli_args(**kwargs):
+    args = []
+    for key, value in kwargs.items():
+        if isinstance(value, bool):
+            if value:
+                args.append(f"--{key}")
+        elif value is not None:
+            args.extend([f"--{key}", str(value)])
+    return args
+
+
+def update():
+    try:
+        url = f"https://api.github.com/repos/chroma-core/chroma/releases"
+        response = requests.get(url)
+        response.raise_for_status()
+        releases = response.json()
+
+        version_pattern = re.compile(r'^\d+\.\d+\.\d+$')
+        numeric_releases = [r["tag_name"] for r in releases if version_pattern.fullmatch(r["tag_name"])]
+
+        if not numeric_releases:
+            print("Couldn't fetch the latest Chroma version")
+            return
+
+        latest = max(numeric_releases, key=parse)
+        if latest == chromadb.__version__:
+            print("Your Chroma version is up-to-date")
+            return
+
+        print(
+            f"A new version of Chroma is available!\nIf you're using pip, run 'pip install --upgrade chromadb' to upgrade to version {latest}")
+
+    except Exception as e:
+        print("Couldn't fetch the latest Chroma version")
+
+
+def app():
+    args = sys.argv
+    if ["chroma", "update"] in args:
+        update()
+        return
+    try:
+        chromadb_rust_bindings.cli(args)
+    except KeyboardInterrupt:
+        pass

backend_service/venv/lib/python3.13/site-packages/chromadb/cli/utils.py

@@ -0,0 +1,40 @@
+from typing import Any, Dict
+
+import os
+import yaml
+
+
+def set_log_file_path(
+    log_config_path: str, new_filename: str = "chroma.log"
+) -> Dict[str, Any]:
+    """This works with the standard log_config.yml file.
+    It will not work with custom log configs that may use different handlers"""
+    with open(f"{log_config_path}", "r") as file:
+        log_config = yaml.safe_load(file)
+    for handler in log_config["handlers"].values():
+        if handler.get("class") == "logging.handlers.RotatingFileHandler":
+            handler["filename"] = new_filename
+
+    return log_config
+
+
+def get_directory_size(directory: str) -> int:
+    """Get the size of a directory in bytes"""
+    total = 0
+    with os.scandir(directory) as it:
+        for entry in it:
+            if entry.is_file():
+                total += entry.stat().st_size
+            elif entry.is_dir():
+                total += get_directory_size(entry.path)
+    return total
+
+
+# https://stackoverflow.com/a/1094933
+def sizeof_fmt(num: int, suffix: str = "B") -> str:
+    n: float = float(num)
+    for unit in ("", "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi"):
+        if abs(n) < 1024.0:
+            return f"{n:3.1f}{unit}{suffix}"
+        n /= 1024.0
+    return f"{n:.1f}Yi{suffix}"