The Deacon patrol formula now uses `gt mol step await-signal` with
exponential backoff instead of vague "sleep 60s" instructions.
How it works:
- Subscribes to `bd activity --follow` (beads activity feed)
- Returns IMMEDIATELY when any gt/bd command triggers activity
- On timeout, waits exponentially longer: 60s → 120s → 240s → max 10m
- Tracks idle:N label on hq-deacon bead across invocations
This connects the designed-but-unintegrated backoff mechanism to the
actual patrol loop. Idle towns let Deacon sleep; active work wakes it.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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