Add arm bonding to witness health check:
- Add ensurePolecatArm() method that:
- Checks if arm already exists for polecat (ArmID in WorkerState)
- If not, calls `gt mol bond mol-polecat-arm` with template vars
- Parses arm ID from output and stores in handoff state
- Call ensurePolecatArm() in healthCheck() for each running polecat
This creates the Christmas Ornament pattern where mol-witness-patrol
has dynamically bonded mol-polecat-arm children, one per active polecat.
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Steve Yegge
af360662d9