- Add confirmation type filter (LoTW Only, DCL Only, Both, None) - Add search box for callsign, entity, and grid square - Rename "All Confirmation" to "All QSOs" for clarity - Fix exclusive filter logic using separate SQL conditions - Add debug logging for filter troubleshooting - Implement DXCC priority: LoTW > DCL - Document QSO page filters and DXCC handling in CLAUDE.md Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>