Checks if a 'Patrol Report YYYY-MM-DD' bead already exists before
attempting to create a new one. This prevents confusing output when
the patrol digest runs multiple times per day.
Fixes: gt-budqv9
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Per-cycle patrol digests were polluting JSONL with O(cycles/day) beads.
Apply the same pattern used for cost digests:
- Make per-cycle squash digests ephemeral (not exported to JSONL)
- Add 'gt patrol digest' command to aggregate into daily summary
- Add patrol-digest step to deacon patrol formula
Daily cadence reduces noise while preserving observability.
Closes: gt-nbmceh
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
