Opening the bell marks its events seen; viewing a session (or returning to the tab) reads that session's events. The badge now drops to what is live instead of climbing with every background "finished". Closes #42 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01WHRLCCdXYm41Qx5kNhehaP