Added WITNESS_PING protocol for monitoring Deacon health:
Witness patrol (mol-witness-patrol):
- Added ping-deacon step after survey-workers
- Sends WITNESS_PING mail to Deacon each patrol cycle
- Checks Deacon agent bead last_activity timestamp
- Escalates to Mayor if Deacon appears unresponsive
Deacon patrol (mol-deacon-patrol):
- Added WITNESS_PING handling in inbox-check
- Added second-order monitoring section to description
- Bumped formula version to 2
This prevents the "who watches the watchers" problem - if Deacon dies,
the collective Witness fleet detects it and escalates.
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>