Implements session-preserving polecat recycle:
- Kills Claude session (tmux kill-session)
- Preserves sandbox (worktree and branch intact)
- Updates agent bead state to 'stopped'
- Leaves polecat ready for respawn on next molecule step
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>