- Add DisplayMessage/DisplayMessageDefault to tmux package for non-disruptive status line notifications - Change mail send to always notify recipients (not just high priority) - Use display-message instead of send-keys to avoid disrupting agent input - Support notifications for mayor, polecat, and refinery sessions Closes gt-7lt 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>