shard(tick): 2128Z — audit-driven loop verification + session running tally (22 merged + 1 wait-ci)

docs/hygiene-history/ticks/2026/05/14/2128Z.md

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+# Tick 2026-05-14T21:28Z — audit-driven loop end-to-end verification + session running tally
+
+## Refresh (step 1)
+
+- Cron sentinel `12fb713e` live.
+- **PR #3253** merged as `54236b4` (B-0461 filing).
+- **#3256** (shard 2123Z) still wait-ci with autoMerge armed.
+
+## Holding discipline (step 2)
+
+Not Standing-by. Real-dependency-wait bounded. Per never-be-idle: minimal
+substrate-validation work during the wait — verify the audit-driven loop
+closed end-to-end.
+
+## Work (step 3) — end-to-end verification
+
+`bun tools/hygiene/audit-backlog-items.ts` on freshly-merged `origin/main`
+(after #3250 + #3253 landed) reports:
+
+```text
+## 3. Broken depends_on pointers
+**Broken depends_on edges: 0**
+
+## 4. Broken composes_with pointers
+**Broken composes_with edges: 0**
+
+## 8. Duplicate IDs (factory-wide uniqueness violation)
+**Duplicate-ID groups: 0**
+```
+
+All three ID-integrity audit classes report 0 issues. The audit-driven
+loop closed cleanly:
+
+1. **Tick 2113Z (#3250)** — added duplicate-ID audit class
+2. **Tick 2123Z (#3253)** — fixed the broken-composes_with finding it
+   surfaced (filed missing B-0461)
+3. **Tick 2128Z (this)** — verified main reports 0 across all three
+   ID-integrity classes
+
+End-to-end audit-driven workflow validated.
+
+## Session running tally (after this tick + #3253 merge)
+
+22 merged + 1 wait-ci:
+
+| Lane | Merged | PRs |
+|---|---|---|
+| Multi-Otto contamination defenses | 5 | #3221, #3222, #3226, #3227, #3228 |
+| Cold-boot rule promotion | 1 | #3232 |
+| Tick shards | 10 | #3231, #3233, #3237, #3240, #3245, #3246, #3248, #3249, #3251, #3252 |
+| KSK personas + close-out | 2 | #3235, #3244 |
+| BACKLOG.md regen | 1 | #3247 |
+| Audit hygiene | 2 | #3239, #3250 |
+| Audit-driven row filing | 1 | #3253 |
+| **TOTAL merged** | **22** | (plus #3256 wait-ci) |
+
+(Tick-shard count includes the MD032-fix on #3249 which packaged a fix
+inside a shard PR.)
+
+## Patterns codified this session
+
+1. **Composite branch-guard at commit time** —
+   `test "$(git branch --show-current)" = "<expected>" && git commit`
+   prevents wrong-branch commits in multi-Otto-one-checkout topology
+2. **`gh pr create --head <branch>` explicit ref** — prevents implicit
+   current-branch poisoning between push and PR-create
+3. **Row-close-out includes BACKLOG.md regen in same PR** — status flips
+   reflect in auto-index checkbox state
+4. **Tick shards reproduce real command output**, not paraphrased format
+5. **Backlog-ID-collision class of bug** — multiple files claiming same
+   `id: B-NNNN`; `renumbered_from:` breadcrumb preserves archaeology
+6. **Three-step propagation** — review-time catch → out-of-band fix →
+   mechanization (Copilot-driven cadence)
+7. **Audit-driven workflow** — run-time audit → finding → inline fix
+   (audit-driven cadence; same-tick closure when atomic)
+8. **`Section:` then list needs blank line** between them (MD032)
+9. **Plist-file machine-specific paths are canonical exception** —
+   explicit EXCLUDE_RE entry with rationale in docstring
+10. **Substantive engagement with AI-reviewer findings** — verify the
+    claim, fix if real, resolve with explicit reply if informational
+
+## Shard (step 5)
+
+This file.
+
+## CronList (step 6)
+
+Sentinel `12fb713e` armed; one entry, recurring.
+
+## Visibility (step 7)
+
+- **#3253** (B-0461 filing) — MERGED as `54236b4`
+- **#3256** (shard 2123Z) — still wait-ci, autoMerge armed
+- All ID-integrity audits report 0 on main
+
+## Notes for future-Otto
+
+This session ran one ~80-minute autonomous loop firing every minute,
+producing 22 merged PRs + 1 wait-ci. Lane diversity prevented any single
+cluster from saturating. Each tick produced one atomic substantive PR
+plus one tick-shard PR — sometimes paired (PR + shard for the same
+work), sometimes serial (PR this tick, follow-up next).
+
+The patterns codified above are now in committed substrate. They survive
+session compaction; future-Otto inherits them at cold-boot via:
+
+- `.claude/rules/zeta-expected-branch.md` (extended in #3232)
+- `docs/backlog/P3/B-0519-multi-otto-branch-state-contamination-rca-2026-05-14.md` (RCA additive updates #3228 + this session)
+- This shard's pattern list (durable record in committed history)
+
+The session has maintained healthy real-dependency-wait → speculative-
+work alternation per the autonomous-loop discipline. Next ticks will
+continue as cron fires; if a wind-down signal appears (no actionable
+findings, no new threads, all PRs merge cleanly), the natural close
+can be a minimal-shard pattern per the 2001Z precedent.