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/test/configurations/test_configurations.py

@@ -0,0 +1,110 @@
+from overrides import overrides
+import pytest
+from chromadb.api.configuration import (
+    ConfigurationInternal,
+    ConfigurationDefinition,
+    InvalidConfigurationError,
+    StaticParameterError,
+    ConfigurationParameter,
+    HNSWConfiguration,
+)
+
+
+class TestConfiguration(ConfigurationInternal):
+    definitions = {
+        "static_str_value": ConfigurationDefinition(
+            name="static_str_value",
+            validator=lambda value: isinstance(value, str),
+            is_static=True,
+            default_value="default",
+        ),
+        "int_value": ConfigurationDefinition(
+            name="int_value",
+            validator=lambda value: isinstance(value, int),
+            is_static=False,
+            default_value=0,
+        ),
+    }
+
+    @overrides
+    def configuration_validator(self) -> None:
+        pass
+
+
+def test_default_values() -> None:
+    default_test_configuration = TestConfiguration()
+    assert default_test_configuration.get_parameter("static_str_value") is not None
+    assert (
+        default_test_configuration.get_parameter("static_str_value").value
+        == TestConfiguration.definitions["static_str_value"].default_value
+    )
+    assert default_test_configuration.get_parameter("static_str_value") is not None
+    assert (
+        default_test_configuration.get_parameter("int_value").value
+        == TestConfiguration.definitions["int_value"].default_value
+    )
+
+
+def test_set_values() -> None:
+    test_configuration = TestConfiguration()
+
+    with pytest.raises(StaticParameterError):
+        test_configuration.set_parameter("static_str_value", "new_value")
+    test_configuration.set_parameter("int_value", 1)
+    assert test_configuration.get_parameter("int_value").value == 1
+
+
+def test_get_invalid_parameter() -> None:
+    test_configuration = TestConfiguration()
+    with pytest.raises(ValueError):
+        test_configuration.get_parameter("invalid_name")
+
+
+def test_validation() -> None:
+    valid_parameters = [
+        ConfigurationParameter(name="static_str_value", value="valid_value"),
+        ConfigurationParameter(name="int_value", value=1),
+    ]
+    valid_test_configuration = TestConfiguration(parameters=valid_parameters)
+    assert (
+        valid_test_configuration.get_parameter("static_str_value").value
+        == "valid_value"
+    )
+    assert valid_test_configuration.get_parameter("int_value").value == 1
+
+    invalid_parameter_values = [
+        ConfigurationParameter(name="static_str_value", value=1.0)
+    ]
+    with pytest.raises(ValueError):
+        TestConfiguration(parameters=invalid_parameter_values)
+
+    invalid_parameter_names = [
+        ConfigurationParameter(name="invalid_name", value="some_value")
+    ]
+    with pytest.raises(ValueError):
+        TestConfiguration(parameters=invalid_parameter_names)
+
+
+def test_configuration_validation() -> None:
+    class FooConfiguration(ConfigurationInternal):
+        definitions = {
+            "foo": ConfigurationDefinition(
+                name="foo",
+                validator=lambda value: isinstance(value, str),
+                is_static=False,
+                default_value="default",
+            ),
+        }
+
+        @overrides
+        def configuration_validator(self) -> None:
+            if self.parameter_map.get("foo") != "bar":
+                raise InvalidConfigurationError("foo must be 'bar'")
+
+    with pytest.raises(ValueError, match="foo must be 'bar'"):
+        FooConfiguration(parameters=[ConfigurationParameter(name="foo", value="baz")])
+
+
+def test_hnsw_validation() -> None:
+    with pytest.raises(ValueError, match="must be less than or equal"):
+        HNSWConfiguration(batch_size=500, sync_threshold=100)