feat: major project restructure - move Django to backend dir and fix critical imports

- Restructure project: moved Django backend to backend/ directory
- Add frontend/ directory for future Next.js application
- Add shared/ directory for common resources
- Fix critical Django import errors:
  - Add missing sys.path modification for apps directory
  - Fix undefined CATEGORY_CHOICES imports in rides module
  - Fix media migration undefined references
  - Remove unused imports and f-strings without placeholders
- Install missing django-environ dependency
- Django server now runs without ModuleNotFoundError
- Update .gitignore and README for new structure
- Add pnpm workspace configuration for monorepo setup

tests/test_runner.py

@@ -1,126 +0,0 @@
-#!/usr/bin/env python
-import os
-import sys
-import django
-from django.conf import settings
-from django.test.runner import DiscoverRunner
-import coverage  # type: ignore
-
-
-def setup_django():
-    """Set up Django test environment"""
-    # Add the project root directory to Python path
-    project_root = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
-    sys.path.insert(0, project_root)
-
-    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "config.django.test")
-    django.setup()
-
-    # Use PostGIS for GeoDjango support
-    settings.DATABASES = {
-        "default": {
-            "ENGINE": "django.contrib.gis.db.backends.postgis",
-            "NAME": "test_thrillwiki",
-            "USER": "postgres",
-            "PASSWORD": "postgres",
-            "HOST": "localhost",
-            "PORT": "5432",
-            "TEST": {
-                "NAME": "test_thrillwiki",
-            },
-        }
-    }
-    settings.DEBUG = False
-
-    # Skip problematic migrations during tests
-    settings.MIGRATION_MODULES = {
-        "parks": None,
-        "operators": None,
-        "property_owners": None,
-        "location": None,
-        "rides": None,
-        "reviews": None,
-    }
-
-
-class CustomTestRunner(DiscoverRunner):
-    def __init__(self, *args, **kwargs):
-        self.cov = coverage.Coverage(
-            source=[
-                "parks",
-                "operators",
-                "property_owners",
-                "location",
-                "rides",
-                "reviews",
-            ],
-            omit=[
-                "*/migrations/*",
-                "*/management/*",
-                "*/admin.py",
-                "*/apps.py",
-                "manage.py",
-            ],
-        )
-        self.cov.start()
-        super().__init__(*args, **kwargs)
-
-    def setup_databases(self, **kwargs):
-        """Set up databases and ensure content types are created"""
-        old_config = super().setup_databases(**kwargs)
-
-        # Create necessary content types
-        from django.contrib.contenttypes.models import ContentType
-
-        ContentType.objects.get_or_create(app_label="parks", model="park")
-
-        return old_config
-
-    def run_suite(self, suite, **kwargs):
-        results = super().run_suite(suite, **kwargs)
-        self.cov.stop()
-        self.cov.save()
-
-        # Print coverage report
-        print("\nCoverage Report:")
-        self.cov.report()
-
-        # Generate HTML coverage report
-        html_dir = os.path.join("tests", "coverage_html")
-        self.cov.html_report(directory=html_dir)
-        print(f"\nDetailed HTML coverage report generated in: {html_dir}")
-
-        return results
-
-
-def run_tests():
-    # Set up Django
-    setup_django()
-
-    # Initialize test runner
-    test_runner = CustomTestRunner(verbosity=2, interactive=True, keepdb=True)
-
-    # Define test labels for discovery
-    test_labels = [
-        "parks.tests",
-        "operators.tests",
-        "property_owners.tests",
-        "location.tests",
-        "rides.tests",
-        "reviews.tests",
-    ]
-
-    # Run tests and collect results
-    failures = test_runner.run_tests(test_labels)
-
-    return failures
-
-
-if __name__ == "__main__":
-    # Create tests directory if it doesn't exist
-    os.makedirs("tests", exist_ok=True)
-    os.makedirs(os.path.join("tests", "coverage_html"), exist_ok=True)
-
-    # Run tests and exit with appropriate status code
-    failures = run_tests()
-    sys.exit(bool(failures))