- Fix duplicate ZIP coordinates (92121/92130)
- Improve test output to show failing/conflicting values
- Tests now ensure all ZIPs and libraries are unique and non-overlapping
- Removed NotificationPanel component and related files
- Removed notifications API endpoint and utils
- Fixed data refresh functionality with cache-busting
- Added refreshing state with better UI feedback
- Added no-cache headers to API endpoint
- Improved refresh button with loading state