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/parks/models/areas.py

@@ -0,0 +1,33 @@
+from django.db import models
+from django.utils.text import slugify
+import pghistory
+
+from apps.core.history import TrackedModel
+from .parks import Park
+
+
+@pghistory.track()
+class ParkArea(TrackedModel):
+
+    # Import managers
+    from ..managers import ParkAreaManager
+
+    objects = ParkAreaManager()
+    id: int  # Type hint for Django's automatic id field
+    park = models.ForeignKey(Park, on_delete=models.CASCADE, related_name="areas")
+    name = models.CharField(max_length=255)
+    slug = models.SlugField(max_length=255)
+    description = models.TextField(blank=True)
+    opening_date = models.DateField(null=True, blank=True)
+    closing_date = models.DateField(null=True, blank=True)
+
+    def save(self, *args, **kwargs):
+        if not self.slug:
+            self.slug = slugify(self.name)
+        super().save(*args, **kwargs)
+
+    def __str__(self):
+        return self.name
+
+    class Meta:
+        unique_together = ("park", "slug")