Add comprehensive API documentation for ThrillWiki integration and features

- Introduced Next.js integration guide for ThrillWiki API, detailing authentication, core domain APIs, data structures, and implementation patterns.
- Documented the migration to Rich Choice Objects, highlighting changes for frontend developers and enhanced metadata availability.
- Fixed the missing `get_by_slug` method in the Ride model, ensuring proper functionality of ride detail endpoints.
- Created a test script to verify manufacturer syncing with ride models, ensuring data integrity across related models.

backend/apps/parks/services/hybrid_loader.py

@@ -5,7 +5,7 @@ This module provides intelligent data loading capabilities for the hybrid filter
 optimizing database queries and implementing progressive loading strategies.
 """
 
-from typing import Dict, List, Optional, Any, Tuple
+from typing import Dict, Optional, Any
 from django.db import models
 from django.core.cache import cache
 from django.conf import settings
@@ -392,7 +392,10 @@ class SmartParkLoader:
             'CLOSED_PERM': 'Permanently Closed',
             'UNDER_CONSTRUCTION': 'Under Construction',
         }
-        return status_labels.get(status, status)
+        if status in status_labels:
+            return status_labels[status]
+        else:
+            raise ValueError(f"Unknown park status: {status}")
     
     def _generate_cache_key(self, operation: str, filters: Optional[Dict[str, Any]] = None) -> str:
         """Generate cache key for the given operation and filters."""