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/companies.py

@@ -0,0 +1,136 @@
+from django.contrib.postgres.fields import ArrayField
+from django.db import models
+from django.utils.text import slugify
+from apps.core.models import TrackedModel
+import pghistory
+
+
+@pghistory.track()
+class Company(TrackedModel):
+
+    # Import managers
+    from ..managers import CompanyManager
+
+    objects = CompanyManager()
+
+    class CompanyRole(models.TextChoices):
+        OPERATOR = "OPERATOR", "Park Operator"
+        PROPERTY_OWNER = "PROPERTY_OWNER", "Property Owner"
+
+    name = models.CharField(max_length=255)
+    slug = models.SlugField(max_length=255, unique=True)
+    roles = ArrayField(
+        models.CharField(max_length=20, choices=CompanyRole.choices),
+        default=list,
+        blank=True,
+    )
+    description = models.TextField(blank=True)
+    website = models.URLField(blank=True)
+
+    # Operator-specific fields
+    founded_year = models.PositiveIntegerField(blank=True, null=True)
+    parks_count = models.IntegerField(default=0)
+    rides_count = models.IntegerField(default=0)
+
+    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:
+        app_label = "parks"
+        ordering = ["name"]
+        verbose_name_plural = "Companies"
+
+
+class CompanyHeadquarters(models.Model):
+    """
+    Simple address storage for company headquarters without coordinate tracking.
+    Focus on human-readable location information for display purposes.
+    """
+
+    # Relationships
+    company = models.OneToOneField(
+        "Company", on_delete=models.CASCADE, related_name="headquarters"
+    )
+
+    # Address Fields (No coordinates needed)
+    street_address = models.CharField(
+        max_length=255,
+        blank=True,
+        help_text="Mailing address if publicly available",
+    )
+    city = models.CharField(
+        max_length=100, db_index=True, help_text="Headquarters city"
+    )
+    state_province = models.CharField(
+        max_length=100,
+        blank=True,
+        db_index=True,
+        help_text="State/Province/Region",
+    )
+    country = models.CharField(
+        max_length=100,
+        default="USA",
+        db_index=True,
+        help_text="Country where headquarters is located",
+    )
+    postal_code = models.CharField(
+        max_length=20, blank=True, help_text="ZIP or postal code"
+    )
+
+    # Optional mailing address if different or more complete
+    mailing_address = models.TextField(
+        blank=True,
+        help_text="Complete mailing address if different from basic address",
+    )
+
+    # Metadata
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
+
+    @property
+    def formatted_location(self):
+        """Returns a formatted address string for display."""
+        components = []
+        if self.street_address:
+            components.append(self.street_address)
+        if self.city:
+            components.append(self.city)
+        if self.state_province:
+            components.append(self.state_province)
+        if self.postal_code:
+            components.append(self.postal_code)
+        if self.country and self.country != "USA":
+            components.append(self.country)
+        return (
+            ", ".join(components)
+            if components
+            else f"{
+                self.city}, {
+                self.country}"
+        )
+
+    @property
+    def location_display(self):
+        """Simple city, state/country display for compact views."""
+        parts = [self.city]
+        if self.state_province:
+            parts.append(self.state_province)
+        elif self.country != "USA":
+            parts.append(self.country)
+        return ", ".join(parts) if parts else "Unknown Location"
+
+    def __str__(self):
+        return f"{self.company.name} Headquarters - {self.location_display}"
+
+    class Meta:
+        verbose_name = "Company Headquarters"
+        verbose_name_plural = "Company Headquarters"
+        ordering = ["company__name"]
+        indexes = [
+            models.Index(fields=["city", "country"]),
+        ]