feat: add public profiles list endpoint with search and pagination

- Add new /profiles/ endpoint for listing user profiles
- Support search by username/display name with ordering options
- Include pagination with configurable page size (max 100)
- Add comprehensive OpenAPI schema documentation
- Refactor passkey authentication state management in MFA flow
- Update URL routing and imports for new list_profiles view

This enables user discovery, leaderboards, and friend-finding features
with a publicly accessible, well-documented API endpoint.

backend/apps/api/v1/rides/urls.py

@@ -12,6 +12,7 @@ from django.urls import include, path
 from rest_framework.routers import DefaultRouter
 
 from .photo_views import RidePhotoViewSet
+from .ride_model_views import GlobalRideModelDetailAPIView, GlobalRideModelListAPIView
 from .views import (
     CompanySearchAPIView,
     DesignerListAPIView,
@@ -40,6 +41,9 @@ urlpatterns = [
     path("hybrid/filter-metadata/", RideFilterMetadataAPIView.as_view(), name="ride-hybrid-filter-metadata"),
     # Filter options
     path("filter-options/", FilterOptionsAPIView.as_view(), name="ride-filter-options"),
+    # Global ride model endpoints - matches frontend's /rides/models/ expectation
+    path("models/", GlobalRideModelListAPIView.as_view(), name="ride-model-global-list"),
+    path("models/<int:pk>/", GlobalRideModelDetailAPIView.as_view(), name="ride-model-global-detail"),
     # Autocomplete / suggestion endpoints
     path(
         "search/companies/",