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/rides/admin.py

@@ -0,0 +1,96 @@
+from django.contrib import admin
+from django.contrib.gis.admin import GISModelAdmin
+from .models.company import Company
+from .models.rides import Ride
+from .models.location import RideLocation
+
+
+class ManufacturerAdmin(admin.ModelAdmin):
+    list_display = ("name", "headquarters", "website", "rides_count")
+    search_fields = ("name",)
+
+    def get_queryset(self, request):
+        return super().get_queryset(request).filter(roles__contains=["MANUFACTURER"])
+
+
+class DesignerAdmin(admin.ModelAdmin):
+    list_display = ("name", "headquarters", "website")
+    search_fields = ("name",)
+
+    def get_queryset(self, request):
+        return super().get_queryset(request).filter(roles__contains=["DESIGNER"])
+
+
+class RideLocationInline(admin.StackedInline):
+    """Inline admin for RideLocation"""
+
+    model = RideLocation
+    extra = 0
+    fields = (
+        "park_area",
+        "point",
+        "entrance_notes",
+        "accessibility_notes",
+    )
+
+
+class RideLocationAdmin(GISModelAdmin):
+    """Admin for standalone RideLocation management"""
+
+    list_display = ("ride", "park_area", "has_coordinates", "created_at")
+    list_filter = ("park_area", "created_at")
+    search_fields = ("ride__name", "park_area", "entrance_notes")
+    readonly_fields = (
+        "latitude",
+        "longitude",
+        "coordinates",
+        "created_at",
+        "updated_at",
+    )
+    fieldsets = (
+        ("Ride", {"fields": ("ride",)}),
+        (
+            "Location Information",
+            {
+                "fields": (
+                    "park_area",
+                    "point",
+                    "latitude",
+                    "longitude",
+                    "coordinates",
+                ),
+                "description": "Optional coordinates - not all rides need precise location tracking",
+            },
+        ),
+        (
+            "Navigation Notes",
+            {
+                "fields": ("entrance_notes", "accessibility_notes"),
+            },
+        ),
+        (
+            "Metadata",
+            {"fields": ("created_at", "updated_at"), "classes": ("collapse",)},
+        ),
+    )
+
+    def latitude(self, obj):
+        return obj.latitude
+
+    latitude.short_description = "Latitude"
+
+    def longitude(self, obj):
+        return obj.longitude
+
+    longitude.short_description = "Longitude"
+
+
+class RideAdmin(admin.ModelAdmin):
+    """Enhanced Ride admin with location inline"""
+
+    inlines = [RideLocationInline]
+
+
+admin.site.register(Company)
+admin.site.register(Ride, RideAdmin)
+admin.site.register(RideLocation, RideLocationAdmin)