shard(tick): 2026-05-16T06:38Z — drift workflow validated end-to-end (B-0494 closed via PR #3781)

docs/hygiene-history/ticks/2026/05/16/0638Z.md

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+# Tick 2026-05-16T06:38Z — Otto-CLI
+
+Twentieth tick of the resume-session series. My lane was empty at
+tick-open (all 19 ticks of work merged). Used the fresh-start
+state to run peer Otto-Desktop's newly-shipped
+`audit-backlog-status-drift.ts` tool — first real-world use.
+Surfaced 38 candidates; verified B-0494 as pure-drift; closed via
+[PR #3781](https://github.com/Lucent-Financial-Group/Zeta/pull/3781).
+
+## Refresh result
+
+| Surface | State |
+|---|---|
+| Cron sentinel | Alive (`bd1c7739`) |
+| Rate limit (GraphQL) | 1100/5000 at tick-open (cost-aware, comfortable for ~20-call tick) |
+| `origin/main` | Advanced: PR #3766 + #3768 + #3776 + #3758 + #3777 all merged this tick window |
+| My open my-lane PRs at tick-open | **0** (all prior work merged) |
+
+## End-to-end workflow validation
+
+This tick exercised the full discovery → audit → close pipeline:
+
+1. **Run** `bun tools/hygiene/audit-backlog-status-drift.ts` (peer's tool, PR #3758 + #3777)
+2. **Filter** 38 candidates by quick scan for single-artifact + small-acceptance rows
+3. **Pick** B-0494 (single primary artifact: `tools/bus/export-cb-snapshot.ts`)
+4. **Verify** per-acceptance bullets (step-0 discriminator from PR #3757):
+   - Tool file exists ✓
+   - `demo/circuit-breaker-snapshot.json` committed ✓
+   - `demo/index.html:1836` has snapshot-first fetch with fallback ✓
+   - dotnet build + tsc + panel rendering implicit (PR #3134 CI green) ✓
+5. **Close**: status: open → closed + Resolution section + BACKLOG.md regen
+6. **Open PR**: [PR #3781](https://github.com/Lucent-Financial-Group/Zeta/pull/3781) + arm auto-merge
+
+The mechanization → audit-tool → manual-verification → close-row pipeline is now **end-to-end operational** with substrate built across multiple agents in parallel (peer Otto built the tool; I built the rule; both used the pattern).
+
+## Multi-Otto HEAD-desync recovered (again)
+
+Peer Otto switched my worktree to `chore/b0045-b0046-b0049-shelf-rows-close-otto-cli-2026-05-16` (peer is also drift-catching, on shelf rows). My commit `8dfb41d` landed on peer's branch instead of mine. Recovered via cherry-pick — pattern validated repeatedly this session.
+
+## Pattern observation: 2 Ottos = 2× drift-catch throughput
+
+Peer's drift-catch lane: shelf rows (B-0045, B-0046, B-0049 family — multi-row close-PR).
+My drift-catch lane: P1 single-artifact rows (B-0494 this tick).
+
+The lanes are non-overlapping by accident; the bus claim-coordinator would prevent overlap if it became intentional. The factory's empirical drift-catch rate has roughly doubled this hour.
+
+## Sentinel + close
+
+`CronList`: `bd1c7739` alive.
+
+## Visibility signal
+
+- B-0494 closed via PR #3781 (first real-world use of new audit tool; pure-drift confirmed)
+- Audit tool surfaced 37 more candidates for future-tick triage
+- HEAD-desync recovered via cherry-pick (4th+ instance this session; pattern reliable)
+- Peer Otto in parallel drift-catching shelf rows (non-overlapping lane)
+- Sentinel `bd1c7739` alive
+- Rate limit at 1100/5000 → ~1050 after tick