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/overrides-7.7.0.dist-info/INSTALLER

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+pip

backend_service/venv/lib/python3.13/site-packages/overrides-7.7.0.dist-info/LICENSE

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backend_service/venv/lib/python3.13/site-packages/overrides-7.7.0.dist-info/METADATA

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+Metadata-Version: 2.1
+Name: overrides
+Version: 7.7.0
+Summary: A decorator to automatically detect mismatch when overriding a method.
+Home-page: https://github.com/mkorpela/overrides
+Author: Mikko Korpela
+Author-email: mikko.korpela@gmail.com
+License: Apache License, Version 2.0
+Keywords: override,inheritence,OOP
+Classifier: Intended Audience :: Developers
+Classifier: Programming Language :: Python :: 3.6
+Classifier: Programming Language :: Python :: 3.7
+Classifier: Programming Language :: Python :: 3.8
+Classifier: Programming Language :: Python :: 3.9
+Requires-Python: >=3.6
+License-File: LICENSE
+Requires-Dist: typing ; python_version < "3.5"
+
+overrides
+=========
+
+.. image:: https://img.shields.io/pypi/v/overrides.svg
+  :target: https://pypi.python.org/pypi/overrides
+
+.. image:: http://pepy.tech/badge/overrides
+  :target: http://pepy.tech/project/overrides
+
+A decorator ``@override`` that verifies that a method that should override an inherited method actually does it.
+
+Copies the docstring of the inherited method to the overridden method.
+
+Since signature validation and docstring inheritance are performed on class creation and not on class instantiation,
+this library significantly improves the safety and experience of creating class hierarchies in 
+Python without significantly impacting performance. See https://stackoverflow.com/q/1167617 for the
+initial inspiration for this library.
+
+Motivation
+----------
+
+Python has no standard mechanism by which to guarantee that (1) a method that previously overrode an inherited method
+continues to do so, and (2) a method that previously did not override an inherited will not override now.
+This opens the door for subtle problems as class hierarchies evolve over time. For example,
+
+1. A method that is added to a superclass is shadowed by an existing method with the same name in a 
+   subclass.
+
+2. A method of a superclass that is overridden by a subclass is renamed in the superclass but not in 
+   the subclass.
+
+3. A method of a superclass that is overridden by a subclass is removed in the superclass but not in
+   the subclass.
+
+4. A method of a superclass that is overridden by a subclass but the signature of the overridden
+   method is incompatible with that of the inherited one.
+
+These can be only checked by explicitly marking method override in the code.
+
+Python also has no standard mechanism by which to inherit docstrings in overridden methods. Because 
+most standard linters (e.g., flake8) have rules that require all public methods to have a docstring, 
+this inevitably leads to a proliferation of ``See parent class for usage`` docstrings on overridden
+methods, or, worse, to a disabling of these rules altogether. In addition, mediocre or missing
+docstrings degrade the quality of tooltips and completions that can be provided by an editor.
+
+Installation
+------------
+
+Compatible with Python 3.6+.
+
+.. code-block:: bash
+
+    $ pip install overrides
+
+Usage
+-----
+
+Use ``@override`` to indicate that a subclass method should override a superclass method.
+
+.. code-block:: python
+
+    from overrides import override
+
+    class SuperClass:
+
+        def foo(self):
+            """This docstring will be inherited by any method that overrides this!"""
+            return 1
+
+        def bar(self, x) -> str:
+            return x
+
+    class SubClass(SuperClass):
+
+        @override
+        def foo(self):
+            return 2
+
+        @override
+        def bar(self, y) -> int: # Raises, because the signature is not compatible.
+            return y
+            
+        @override
+        def zoo(self): # Raises, because does not exist in the super class.
+            return "foobarzoo"
+
+Use ``EnforceOverrides`` to require subclass methods that shadow superclass methods to be decorated 
+with ``@override``.
+
+.. code-block:: python
+ 
+    from overrides import EnforceOverrides
+
+    class SuperClass(EnforceOverrides):
+
+        def foo(self):
+            return 1
+
+    class SubClass(SuperClass):
+
+        def foo(self): # Raises, because @override is missing.
+            return 2
+
+Use ``@final`` to indicate that a superclass method cannot be overriden.
+With Python 3.11 and above ``@final`` is directly `typing.final <https://docs.python.org/3.11/library/typing.html#typing.final>`_.
+
+.. code-block:: python
+
+    from overrides import EnforceOverrides, final, override
+
+    class SuperClass(EnforceOverrides):
+
+        @final
+        def foo(self):
+            return 1
+
+    class SubClass(SuperClass):
+
+        @override
+        def foo(self): # Raises, because overriding a final method is forbidden.
+            return 2
+
+Note that ``@classmethod`` and ``@staticmethod`` must be declared before ``@override``.
+
+.. code-block:: python
+
+    from overrides import override
+
+    class SuperClass:
+
+        @staticmethod
+        def foo(x):
+            return 1
+
+    class SubClass(SuperClass):
+
+        @staticmethod
+        @override
+        def foo(x):
+            return 2
+
+
+Flags of control
+----------------
+
+.. code-block:: python
+
+    # To prevent all signature checks do:
+    @override(check_signature=False)
+    def some_method(self, now_this_can_be_funny_and_wrong: str, what_ever: int) -> "Dictirux":
+        pass
+
+    # To do the check only at runtime and solve some forward reference problems
+    @override(check_at_runtime=True)
+    def some_other_method(self, ..) -> "SomethingDefinedLater":
+        pass
+
+    a.some_other_method() # Kaboom if not SomethingDefinedLater
+
+
+Contributors
+------------
+
+This project exists only through the work of all the people who contribute.
+
+mkorpela, drorasaf, ngoodman90, TylerYep, leeopop, donpatrice, jayvdb, joelgrus, lisyarus, 
+soulmerge, rkr-at-dbx, ashwin153, brentyi,  jobh, tjsmart, bersbersbers, LysanderGG, mgorny.

backend_service/venv/lib/python3.13/site-packages/overrides-7.7.0.dist-info/RECORD

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backend_service/venv/lib/python3.13/site-packages/overrides-7.7.0.dist-info/WHEEL

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+Wheel-Version: 1.0
+Generator: bdist_wheel (0.42.0)
+Root-Is-Purelib: true
+Tag: py3-none-any
+

backend_service/venv/lib/python3.13/site-packages/overrides-7.7.0.dist-info/top_level.txt

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+overrides