Add CLI commands for managing the Deacon session, following the same
pattern as the Mayor commands:
- gt deacon start: Start the Deacon tmux session
- gt deacon stop: Stop the session with graceful shutdown
- gt deacon status: Check if session is running
- gt deacon attach: Attach to session (auto-starts if needed)
- gt deacon restart: Restart Claude within the session
The Deacon is the hierarchical health-check orchestrator that monitors
Mayor and Witnesses, handles lifecycle requests, and keeps Gas Town running.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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