Add history tracking functionality using django-pghistory; implement views, templates, and middleware for event serialization and context management

core/middleware.py

@@ -0,0 +1,14 @@
+import pghistory
+
+def setup_pghistory_context():
+    """
+    Set up pghistory context middleware to track request information.
+    This function configures what contextual information is stored
+    with each history record.
+    """
+    pghistory.context(lambda request: {
+        'user': str(request.user) if request.user.is_authenticated else None,
+        'ip': request.META.get('REMOTE_ADDR'),
+        'user_agent': request.META.get('HTTP_USER_AGENT'),
+        'session_key': request.session.session_key
+    })