Enhance moderation dashboard UI and UX:

- Add HTMX-powered filtering with instant updates
- Add smooth transitions and loading states
- Improve visual hierarchy and styling
- Add review notes functionality
- Add confirmation dialogs for actions
- Make navigation sticky
- Add hover effects and visual feedback
- Improve dark mode support

rides/signals.py

@@ -0,0 +1,17 @@
+from django.db.models.signals import pre_save
+from django.dispatch import receiver
+from django.utils import timezone
+from .models import Ride
+
+
+@receiver(pre_save, sender=Ride)
+def handle_ride_status(sender, instance, **kwargs):
+    """Handle ride status changes based on closing date"""
+    if instance.closing_date:
+        today = timezone.now().date()
+        
+        # If we've reached the closing date and status is "Closing"
+        if today >= instance.closing_date and instance.status == 'CLOSING':
+            # Change to the selected post-closing status
+            instance.status = instance.post_closing_status or 'SBNO'
+            instance.status_since = instance.closing_date