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+| 2026-05-15T13:38:00Z | claude-opus-4-7 | 311691b4 | shard: cold-boot Otto-CLI; catch-43 cron defence; yielded 1336Z to peer Otto | (this PR) | catch-43 defence |
+
+# Tick 1338Z — fresh cold-boot
+
+Fresh Otto-CLI session fired by `<<autonomous-loop>>` cron. Session-start
+hook reported no live cron sentinel.
+
+## Catch-43 defence
+
+- `CronList`: empty on wake (no `<<autonomous-loop>>` job).
+- Re-armed via `CronCreate` → job `311691b4`, `* * * * *`.
+- Recorded per [tick-must-never-stop.md](../../../../../../.claude/rules/tick-must-never-stop.md).
+
+## Refresh + collision detect
+
+- Worldview: 35 open PRs, 633 backlog items, primary checkout `128 behind, 2 ahead, 2 dirty`.
+- Peer Otto-CLI worktree `/private/tmp/zeta-otto-cli-0027z-sidetick` was on
+  branch `shard/tick-1336z-otto-cli-2026-05-15` at 1336Z — my exact wake slot.
+- `bun tools/bus/claim.ts check --item tick-1336z-2026-05-15` → `unclaimed`.
+  Branch existence was the implicit signal; no formal bus claim was filed.
+
+## Substrate-honest yield
+
+Per [claim-acquire-before-worktree-work.md](../../../../../../.claude/rules/claim-acquire-before-worktree-work.md)
+and [B-0519 multi-Otto patterns](../../../../../../docs/backlog/P3/B-0519-multi-otto-branch-state-contamination-rca-2026-05-14.md):
+yielded the 1336Z slot without touching primary worktree, without competing
+shard write. At 1338Z, peer Otto rotated to feature branch
+`feat/ani-full-history-extract-plus-grok-extract-tool-otto-cli-2026-05-15`;
+the 1338Z slot freed. This shard lands from a fresh side worktree branched
+off `origin/main` (90b7137) — no contention with peer Otto's working state.
+
+## Substrate-honest gap
+
+Branch creation IS the implicit claim, but the bus claim coordinator
+(`tools/bus/claim.ts`) was unaware. A racing peer that started earlier
+than me (rather than later) could have raced to commit on the same slot
+before either detected the other. Decomposable future work: have
+branch-creation auto-publish a `claim` envelope, or have the
+autonomous-loop tick check `git branch -a | grep tick-<HHMM>z` AND bus
+claims before authoring.
+
+## Per-tick discipline trace (canonical 7-step per [docs/AUTONOMOUS-LOOP-PER-TICK.md](../../../../../../docs/AUTONOMOUS-LOOP-PER-TICK.md))
+
+1. Refresh — `bun tools/github/refresh-worldview.ts` ✓
+2. Holding discipline — named dependency (peer Otto on 1336Z); waited 2 min ✓
+3. Pick work — cold-boot detection shard (catch-43 substrate-honest output) ✓
+4. Verify — `git branch --show-current` confirmed before commit ✓
+5. Shard — this file ✓
+6. CronList — sentinel `311691b4` confirmed ✓
+7. Visibility signal — PR opened against LFG/main; auto-merge to be armed ✓