feat: Implement MFA authentication, add ride statistics model, and update various services, APIs, and tests across the application.

backend/apps/api/v1/serializers/accounts.py

@@ -5,21 +5,22 @@ This module contains all serializers related to user account management,
 profile settings, preferences, privacy, notifications, and security.
 """
 
-from rest_framework import serializers
 from django.contrib.auth import get_user_model
 from drf_spectacular.utils import (
-    extend_schema_serializer,
     OpenApiExample,
+    extend_schema_serializer,
 )
+from rest_framework import serializers
+
 from apps.accounts.models import (
-    User,
-    UserProfile,
-    UserNotification,
     NotificationPreference,
+    User,
+    UserNotification,
+    UserProfile,
 )
+from apps.core.choices.serializers import RichChoiceFieldSerializer
 from apps.lists.models import UserList
 from apps.rides.models.credits import RideCredit
-from apps.core.choices.serializers import RichChoiceFieldSerializer
 
 UserModel = get_user_model()
 
@@ -187,7 +188,7 @@ class PublicUserSerializer(serializers.ModelSerializer):
     Only exposes public information.
     """
     profile = UserProfileSerializer(read_only=True)
-    
+
     class Meta:
         model = User
         fields = [
@@ -906,9 +907,10 @@ class AvatarUploadSerializer(serializers.Serializer):
 
         # Try to validate with PIL
         try:
-            from PIL import Image
             import io
 
+            from PIL import Image
+
             value.seek(0)
             image_data = value.read()
             value.seek(0)  # Reset for later use