This fix addresses the issue where polecat sessions terminate unexpectedly
during work without recovery:
Changes:
- Add `checkPolecatSessionHealth()` to daemon heartbeat loop
- Proactively validates tmux sessions are alive for polecats
- Detects crashed polecats that have work-on-hook
- Auto-restarts crashed polecats with proper environment setup
- Notifies Witness if restart fails as fallback
- Add polecat support to lifecycle identity mapping
- `identityToSession()` now handles polecat identities
- `restartSession()` can restart crashed polecat sessions
- `identityToStateFile()` handles polecat state files
- `identityToAgentBeadID()` handles polecat agent beads
- `identityToBDActor()` handles polecat BD_ACTOR conversion
- Add `gt session check` command for manual health checking
- Validates tmux sessions exist for all polecats
- Shows summary of healthy vs not-running sessions
- Useful for debugging session issues
This provides faster recovery (within heartbeat interval) compared to
waiting for GUPP violation timeout (30 min) or Witness detection.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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