feat: Implement Entity Suggestion Manager and Modal components

- Added EntitySuggestionManager.vue to manage entity suggestions and authentication.
- Created EntitySuggestionModal.vue for displaying suggestions and adding new entities.
- Integrated AuthManager for user authentication within the suggestion modal.
- Enhanced signal handling in start-servers.sh for graceful shutdown of servers.
- Improved server startup script to ensure proper cleanup and responsiveness to termination signals.
- Added documentation for signal handling fixes and usage instructions.

backend/apps/rides/management/commands/update_ride_rankings.py

@@ -0,0 +1,36 @@
+from django.core.management.base import BaseCommand
+from django.utils import timezone
+
+from apps.rides.services import RideRankingService
+
+
+class Command(BaseCommand):
+    help = "Calculates and updates ride rankings using the Internet Roller Coaster Poll algorithm"
+
+    def add_arguments(self, parser):
+        parser.add_argument(
+            "--category",
+            type=str,
+            default=None,
+            help="Optional ride category to filter (e.g., RC for roller coasters)",
+        )
+
+    def handle(self, *args, **options):
+        category = options.get("category")
+
+        service = RideRankingService()
+        self.stdout.write(
+            self.style.SUCCESS(
+                f"Starting ride ranking calculation at {timezone.now().isoformat()}"
+            )
+        )
+
+        result = service.update_all_rankings(category=category)
+
+        self.stdout.write(
+            self.style.SUCCESS(
+                f"Completed ranking calculation: {result.get('rides_ranked', 0)} rides ranked, "
+                f"{result.get('comparisons_made', 0)} comparisons, "
+                f"duration={result.get('duration', 0):.2f}s"
+            )
+        )