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/posthog/exception_integrations/__init__.py

@@ -0,0 +1,5 @@
+class IntegrationEnablingError(Exception):
+    """
+    The integration could not be enabled due to a user error like
+    `django` not being installed for the `DjangoIntegration`.
+    """

backend_service/venv/lib/python3.13/site-packages/posthog/exception_integrations/django.py

@@ -0,0 +1,117 @@
+# Portions of this file are derived from getsentry/sentry-javascript by Software, Inc. dba Sentry
+# Licensed under the MIT License
+
+# 💖open source (under MIT License)
+
+import re
+import sys
+from typing import TYPE_CHECKING
+
+from posthog.exception_integrations import IntegrationEnablingError
+
+try:
+    from django import VERSION as DJANGO_VERSION
+    from django.core import signals
+
+except ImportError:
+    raise IntegrationEnablingError("Django not installed")
+
+
+if TYPE_CHECKING:
+    from typing import Any, Dict  # noqa: F401
+
+    from django.core.handlers.wsgi import WSGIRequest  # noqa: F401
+
+
+class DjangoIntegration:
+    # TODO: Abstract integrations one we have more and can see patterns
+    """
+    Autocapture errors from a Django application.
+    """
+
+    identifier = "django"
+
+    def __init__(self, capture_exception_fn=None):
+        if DJANGO_VERSION < (4, 2):
+            raise IntegrationEnablingError("Django 4.2 or newer is required.")
+
+        # TODO: Right now this seems too complicated / overkill for us, but seems like we can automatically plug in middlewares
+        # which is great for users (they don't need to do this) and everything should just work.
+        # We should consider this in the future, but for now we can just use the middleware and signals handlers.
+        # See: https://github.com/getsentry/sentry-python/blob/269d96d6e9821122fbff280e6a26956e5ed03c0b/sentry_sdk/integrations/django/__init__.py
+
+        self.capture_exception_fn = capture_exception_fn
+
+        def _got_request_exception(request=None, **kwargs):
+            # type: (WSGIRequest, **Any) -> None
+
+            extra_props = {}
+            if request is not None:
+                # get headers metadata
+                extra_props = DjangoRequestExtractor(request).extract_person_data()
+
+            self.capture_exception_fn(sys.exc_info(), extra_props)
+
+        signals.got_request_exception.connect(_got_request_exception)
+
+    def uninstall(self):
+        pass
+
+
+class DjangoRequestExtractor:
+    def __init__(self, request):
+        # type: (Any) -> None
+        self.request = request
+
+    def extract_person_data(self):
+        headers = self.headers()
+
+        # Extract traceparent and tracestate headers
+        traceparent = headers.get("Traceparent")
+        tracestate = headers.get("Tracestate")
+
+        # Extract the distinct_id from tracestate
+        distinct_id = None
+        if tracestate:
+            # TODO: Align on the format of the distinct_id in tracestate
+            # We can't have comma or equals in header values here, so maybe we should base64 encode it?
+            match = re.search(r"posthog-distinct-id=([^,]+)", tracestate)
+            if match:
+                distinct_id = match.group(1)
+
+        return {
+            **self.user(),
+            "distinct_id": distinct_id,
+            "ip": headers.get("X-Forwarded-For"),
+            "user_agent": headers.get("User-Agent"),
+            "traceparent": traceparent,
+            "$request_path": self.request.path,
+        }
+
+    def user(self):
+        user_data: dict[str, str] = {}
+
+        user = getattr(self.request, "user", None)
+
+        if user is None or not user.is_authenticated:
+            return user_data
+
+        try:
+            user_id = str(user.pk)
+            if user_id:
+                user_data.setdefault("$user_id", user_id)
+        except Exception:
+            pass
+
+        try:
+            email = str(user.email)
+            if email:
+                user_data.setdefault("email", email)
+        except Exception:
+            pass
+
+        return user_data
+
+    def headers(self):
+        # type: () -> Dict[str, str]
+        return dict(self.request.headers)