Add gt deacon zombie-scan command that provides defense-in-depth
against Witness cleanup failures. The command:
- Scans all rigs for polecats that are idle, have no session running,
no hooked work, and are stale (>10 min inactive)
- Reports found zombies with details
- Optionally nukes them and notifies the mayor
Flags:
--dry-run Preview only
--threshold Custom staleness threshold (default 10m)
--nuke=false Report only, do not clean up
Also adds zombie-scan step to mol-deacon-patrol formula.
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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