feat: complete monorepo structure with frontend and shared resources

- Add complete backend/ directory with full Django application
- Add frontend/ directory with Vite + TypeScript setup ready for Next.js
- Add comprehensive shared/ directory with:
  - Complete documentation and memory-bank archives
  - Media files and avatars (letters, park/ride images)
  - Deployment scripts and automation tools
  - Shared types and utilities
- Add architecture/ directory with migration guides
- Configure pnpm workspace for monorepo development
- Update .gitignore to exclude .django_tailwind_cli/ build artifacts
- Preserve all historical documentation in shared/docs/memory-bank/
- Set up proper structure for full-stack development with shared resources

backend/apps/media/apps.py

@@ -0,0 +1,34 @@
+from django.apps import AppConfig
+from django.db.models.signals import post_migrate
+
+
+def create_photo_permissions(sender, **kwargs):
+    """Create custom permissions for photos"""
+    from django.contrib.auth.models import Permission
+    from django.contrib.contenttypes.models import ContentType
+    from apps.media.models import Photo
+
+    content_type = ContentType.objects.get_for_model(Photo)
+    Permission.objects.get_or_create(
+        codename="add_photo",
+        name="Can add photo",
+        content_type=content_type,
+    )
+    Permission.objects.get_or_create(
+        codename="change_photo",
+        name="Can change photo",
+        content_type=content_type,
+    )
+    Permission.objects.get_or_create(
+        codename="delete_photo",
+        name="Can delete photo",
+        content_type=content_type,
+    )
+
+
+class MediaConfig(AppConfig):
+    default_auto_field = "django.db.models.BigAutoField"
+    name = "apps.media"
+
+    def ready(self):
+        post_migrate.connect(create_photo_permissions, sender=self)