- Session list now supports extended selection (Shift+click for range, Ctrl+click for individual) - "Delete Selected" button removes chosen sessions with confirmation - List refreshes in-place after deletion so you can keep cleaning up - Added delete_sessions() batch method to database (single transaction) - Simplified delete_session() to rely on ON DELETE CASCADE Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>