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/location/admin.py

@@ -0,0 +1,67 @@
+from django.contrib import admin
+from .models import Location
+
+# DEPRECATED: This admin interface is deprecated.
+# Location data has been migrated to domain-specific models:
+# - ParkLocation in parks.models.location
+# - RideLocation in rides.models.location
+# - CompanyHeadquarters in parks.models.companies
+#
+# This admin interface is kept for data migration and cleanup purposes only.
+
+
+@admin.register(Location)
+class LocationAdmin(admin.ModelAdmin):
+    list_display = (
+        "name",
+        "location_type",
+        "city",
+        "state",
+        "country",
+        "created_at",
+    )
+    list_filter = ("location_type", "country", "state", "city")
+    search_fields = ("name", "street_address", "city", "state", "country")
+    readonly_fields = ("created_at", "updated_at", "content_type", "object_id")
+
+    fieldsets = (
+        (
+            "⚠️ DEPRECATED MODEL",
+            {
+                "description": "This model is deprecated. Use domain-specific location models instead.",
+                "fields": (),
+            },
+        ),
+        ("Basic Information", {"fields": ("name", "location_type")}),
+        ("Geographic Coordinates", {"fields": ("latitude", "longitude")}),
+        (
+            "Address",
+            {
+                "fields": (
+                    "street_address",
+                    "city",
+                    "state",
+                    "country",
+                    "postal_code",
+                )
+            },
+        ),
+        (
+            "Content Type (Read Only)",
+            {
+                "fields": ("content_type", "object_id"),
+                "classes": ("collapse",),
+            },
+        ),
+        (
+            "Metadata",
+            {"fields": ("created_at", "updated_at"), "classes": ("collapse",)},
+        ),
+    )
+
+    def get_queryset(self, request):
+        return super().get_queryset(request).select_related("content_type")
+
+    def has_add_permission(self, request):
+        # Prevent creating new generic Location objects
+        return False