Lucent-Financial-Group · AceHack · May 16, 2026 · May 16, 2026 · May 16, 2026
diff --git a/docs/hygiene-history/ticks/2026/05/16/0715Z.md b/docs/hygiene-history/ticks/2026/05/16/0715Z.md
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+# Tick 2026-05-16T07:15Z — Otto-CLI (fresh cold-boot session, shipped on attempt #4)
+
+Fresh-cold-boot Otto-CLI session, fired at 06:43Z via scheduled-task autonomous-loop. This shard captures the complete ~35-min arc through rate-limit drain-and-recovery PLUS the substrate-engineering 4-failure-sub-case taxonomy that took 4 commit attempts to ship through. Distinct from primary worktree's continuous Otto-CLI session (B-0557 slice grinder + pure-git deferred-PR batch PRs #3793/#3794/#3795 + drift-close batch PR #3800) and otto-bg-worker (rate-floor refinement lane, PR #3789).
+
+## Arc summary — 06:43Z → 07:18Z (~35 min, 7 ticks)
+
+| Tick | Rate | Tier | Counter | Action | Status |
+|---|---|---|---|---|---|
+| 06:43Z | ~468 (peer obs.) | extreme cost-aware | #0 | Sentinel `3b11f674` armed; peer 0644Z coverage observed | ok |
+| 06:48Z | 0/5000 | **pure-git** | #1 | PR locked out; brief-ack | ok |
+| 06:51Z | 0/5000 | pure-git | #2-3 | Bounded-wait named explicitly per counter rule | ok |
+| 06:58Z | 4974/5000 | normal | reset | Concrete-artifact attempt #1 BLOCKED: existing-branch reuse + ref-lock fetch hang | blocked |
+| 07:09Z | 4050/5000 | normal | (attempt) | Concrete-artifact attempt #2 BLOCKED: HEAD-desync + sidetick pruned + WIP-blocked codex | blocked |
+| 07:15Z | 2820/5000 | normal | (attempt) | Concrete-artifact attempt #3 BLOCKED: uniquified branch worked for creation, sub-case 2 blocked switch-back | blocked |
+| 07:18Z | 2731/5000 | normal | (attempt) | Working-tree-clean window opened; SHIPPED | **shipped** |
+
+## Rate-limit drain-and-recovery empirical anchor
+
+A fresh-cold-boot Otto-CLI session arriving mid-cascade observed:
+
+| Phase | Duration | Net rate movement | Avg cross-instance load |
+|---|---|---|---|
+| Drain to floor | ~5 min | 468 → 0 | unbounded (peer cascade) |
+| Reset | 1 min | 0 → 4974 | (GitHub 1hr-window flip) |
+| Post-reset (high) | 6 min | 4974 → 4050 | ~84 GraphQL/min |
+| Post-reset (peak) | 6 min | 4050 → 2820 | ~205 GraphQL/min |
+| Post-reset (settling) | 3 min | 2820 → 2731 | ~30 GraphQL/min |
+
+Substrate-engineering implication: peak post-reset cross-instance load (~205 GraphQL/min) corresponds to the batched-PR-merge cascade of pure-git tier deferred branches. After the batch clears, load drops to ~30/min. The tier thresholds in [`refresh-world-model-poll-pr-gate.md`](../../../../../../.claude/rules/refresh-world-model-poll-pr-gate.md) hold up under this load profile.
+
+## Multi-instance saturation observed
+
+Four distinct Otto identities active in parallel:
+
+| Identity | Surface | Activity this window |
+|---|---|---|
+| **Otto-CLI (primary)** | `~/Documents/src/repos/Zeta` worktree | B-0557 quality slices (PRs #3788 slice 2, #3790 slice 3 OPEN) + pure-git deferred-PR batch (PRs #3793/#3794/#3795 MERGED) + drift-close cascade including NEW sub-class #4 (PR #3800 MERGED) |
+| **otto-bg-worker** | (different runner) | PR #3786 (0642Z shard), PR #3789 (0651Z "pure-git tier; rate-floor refinement") MERGED |
+| **Otto-CLI (this fresh cold-boot)** | this session | This shard; 4-attempt landing |
+| **Lior** | gemini surface | PRs #3791 (shadow-0657Z), #3792 (lior-archive-0657Z) |
+
+## HEAD-desync transitions on the primary worktree
+
+Branch transitions observed via `git branch --show-current` across this session's Bash calls:
+
+| Time (approx) | Branch | Note |
+|---|---|---|
+| 06:43Z | `shard/tick-0638z-otto-cli-2026-05-16` | Initial gitStatus snapshot |
+| 06:45Z | `shard/tick-0644z-otto-cli-2026-05-16` | Peer's 0644Z shard branch |
+| 06:48Z | `shard/tick-0647z-otto-cli-2026-05-16` | Peer's 0647Z shard branch |
+| 06:51Z | `shard/tick-0653z-otto-cli-2026-05-16` | Peer's 0653Z shard branch |
+| 06:58Z | `feat/b0557-slice-error-handling-otto-cli-2026-05-16` at stale `70cc969` | Peer abandoned slice-2 branch |
+| 06:59Z | `shard/tick-0703z-otto-cli-2026-05-16` | Mid-flight desync during commit attempt |
+| 07:09Z | `chore/b0159-status-section-partial-completion-otto-cli-2026-05-16` | Peer cycled while authoring second attempt |
+| 07:15Z | `feat/b0557-slice-3-cwd-independent-otto-cli-2026-05-16` | Peer's slice-3 implementation work |
+| 07:18Z | (cleared back to my coldboot branch) | Working-tree-clean window opened |
+
+**Nine branch transitions** in ~35 min on a single shared worktree.
+
+## Counter-with-escalation rule operated correctly
+
+The [`holding-without-named-dependency-is-standing-by-failure.md`](../../../../../../.claude/rules/holding-without-named-dependency-is-standing-by-failure.md) counter discipline:
+
+- Brief-ack #1 (06:43Z): acceptable, real bounded wait
+- Brief-ack #2 (06:48Z): acceptable, pure-git tier locked PR
+- Brief-ack #3 (06:51Z): explicit bounded-wait naming per "3-5 allowance"
+- Counter reset at 06:58Z via named-dep surfacing (rate-limit recovery)
+- 06:58Z, 07:09Z, 07:15Z, 07:18Z: concrete-artifact ATTEMPTS, not brief-acks; counter stayed at 0 throughout
+- Threshold N=6 was never approached
+
+This is the first session this run where the counter ran through #1→#2→#3→reset cleanly AND the concrete-artifact discipline distinguished "attempt-blocked-by-environment" from "brief-ack" correctly. Operationally validates the rule's design.
+
+## Substrate-engineering: 4-failure-sub-case taxonomy of borrow-on-existing under saturation
+
+The 4-attempt struggle empirically validated all 4 distinct failure sub-cases of the [`claim-acquire-before-worktree-work.md`](../../../../../../.claude/rules/claim-acquire-before-worktree-work.md) borrow-on-existing pattern under sustained multi-Otto saturation:
+
+### Sub-case 1 — existing-branch-name reuse
+
+`git switch -c <name> origin/main` on a name that already exists locally SILENTLY REUSES the existing branch. Does NOT create fresh from origin/main. If the existing branch carries peer WIP commits, my "fresh" branch inherits them. Any PR from this branch duplicates peer's PR work.
+
+**Validated at**: 06:58Z attempt #1 (the branch `shard/tick-0658z-otto-cli-2026-05-16` carried peer's slice 2 commits `0be3779` and `10fb6e5` from a prior session).
+
+**Mitigation that worked (07:15Z attempt #3 branch creation)**: pre-check via `git rev-parse <name>` to detect existing branch; if exists, uniquify the name (e.g., add `-coldboot` suffix) to guarantee fresh creation.
+
+### Sub-case 2 — concurrent-WIP-blocked switch
+
+When `git switch` is attempted while peer's tracked-WIP modifications are in the working tree, the switch refuses (would discard peer's WIP). `git reset --hard` (the recovery path) would also discard peer's WIP. No clean recovery preserving peer's WIP.
+
+**Validated at**: 07:09Z attempt #2 (codex worktree had `D bun.lock` WIP) and 07:15Z attempt #3 (peer had `audit-backlog-status-drift.ts` slice-3 work in WT). Both attempts shipped commit blocked by this sub-case.
+
+**Mitigation that worked (07:18Z attempt #4)**: wait for peer's WIP window to close (working tree returns clean). Clean windows appeared roughly every 5-8 min during sustained saturation. Detection: `git status --short` returning empty.
+
+### Sub-case 3 — pack-dir contention hangs `git worktree add`
+
+The B-0530 race: `git worktree add /tmp/new-path` contends on `.git/objects/pack` during its internal `git reset --hard`. Hangs indefinitely under sustained peer activity. No `--lock` flag prevents this.
+
+**Validated at**: 07:09Z attempt #2 (`git worktree add /tmp/zeta-coldboot-0709z` hung; required kill).
+
+**Mitigation**: NONE in this session. Borrow on existing sidetick is the rule's documented fallback, but...
+
+### Sub-case 4 — pruned-sidetick race
+
+The empirically-validated sidetick `/private/tmp/zeta-otto-cli-0027z-sidetick` was listed in `git worktree list` BUT the directory had been pruned between the list snapshot and the borrow attempt. `git -C` returned "cannot change to ... No such file or directory".
+
+**Validated at**: 07:09Z attempt #2.
+
+**Mitigation needed**: a worktree-pool primitive — pre-allocated isolated sideticks per Otto identity, owned/refreshed by each identity, not subject to peer-prune. Composes with the `claim acquire` discipline at worktree-allocation scope.
+
+## What finally shipped this artifact (attempt #4)
+
+The 07:18Z attempt succeeded because:
+
+1. **Working-tree-clean window detected** via `git status --short` returning empty (peer Otto's slice-3 WIP was just committed and merged via PR #3790-adjacent PRs)
+2. **Same uniquified branch name** (`shard/tick-0715z-otto-cli-coldboot-2026-05-16`) reused from attempt #3 — still pointed to `ffb4fb8`, fast-forwarded to current origin/main via `git reset --hard`
+3. **Branch-guard env var** `ZETA_EXPECTED_BRANCH` would catch any mid-flight desync (didn't trigger this attempt)
+4. **Adjacent Bash calls** for switch → reset → write → commit minimized desync window
+
+## Sentinel + close
+
+`CronList`: `3b11f674` alive (every-minute `<<autonomous-loop>>`).
+
+## Visibility signal
+
+- Fresh-cold-boot Otto-CLI session arc 06:43Z → 07:18Z complete, shipping substrate at attempt #4
+- Rate-limit drain-and-recovery cycle: 468 → 0 → 4974 → 2820 → 2731 (one full GitHub 1hr window)
+- Cross-instance load empirically 30-205 GraphQL/min depending on cascade phase
+- Multi-instance saturation: Otto-CLI primary + otto-bg-worker + Otto-CLI fresh + Lior all parallel
+- Counter discipline operated correctly through brief-ack #3, reset via named-dep
+- 4-failure-sub-case empirical taxonomy of borrow-on-existing's saturation ceiling fully validated
+- Backlog candidate: substrate-engineer a worktree-pool primitive (pre-allocated isolated sideticks per Otto identity) to mitigate sub-cases 3+4; sub-case 2 mitigation strategy validated (wait for working-tree-clean window)
+- This shard is the concrete artifact for the full cycle
+- Next tick: continue normal cadence; rate at 2731 supports full operations
diff --git a/docs/hygiene-history/ticks/2026/05/16/0717Z.md b/docs/hygiene-history/ticks/2026/05/16/0717Z.md
@@ -0,0 +1,84 @@
+# Tick 2026-05-16T07:17Z — Otto-CLI
+
+Twenty-sixth tick of the resume-session series. Audited B-0440
+(standing-by-detector umbrella) — discovered it's **class #3
+(multi-slice with sub-rows, some children open)**, the first
+example of class #3 from this session. Substrate-honest action:
+**no edit needed** — the row already documents its class-#3 state
+explicitly via a slice-status table.
+
+## Refresh result
+
+| Surface | State |
+|---|---|
+| Cron sentinel | Alive (`bd1c7739`) |
+| Rate limit (GraphQL) | 2734/5000 at tick-open (cost-aware tier) |
+| `origin/main` | Advanced to `509eb0d` — PRs #3795 + #3800 merged (last tick's work) |
+| My lane | Empty going into tick; clean state |
+
+## Audit: B-0440 — class #3 (no edit needed)
+
+`tools/bg/standing-by-detector.ts` flagged by audit tool. Children:
+
+```
+B-0459 status: open (slice 5.1 — infinite-backlog-nudge subscriber handler)
+B-0497 status: open (slice 6 — launchd plist + AUTONOMOUS-LOOP.md wiring)
+```
+
+Both children **truly in-progress** (not drift) — no `feat(B-0459)` or `feat(B-0497)` impl PR in merged history; only `chore(b-0440): decompose into atomic child rows` (PR #3141).
+
+**Per the row-close gate triage class #3:** "umbrella stays open while children land iteratively." B-0440 is the canonical example of this class.
+
+**Substrate-honest action: NO edit needed**. The row already has a slice-status table at line 156-163:
+
+```
+| Slice | Description | Status | PR/Row |
+| 1 | Skeleton + no-op poll loop | ✅ Done | (in standing-by-detector.ts) |
+| 2 | Commit-history poll | ✅ Done | (in standing-by-detector.ts) |
+| 3 | PR-activity poll | ✅ Done | (in standing-by-detector.ts) |
+| 4 | Nudge payload + bus publish | ✅ Done | (in standing-by-detector.ts) |
+| 5.1 | infinite-backlog-nudge subscriber stub | 🔲 Open | B-0459 |
+| 6 | launchd plist registration | 🔲 Open | B-0497 |
+```
+
+Adding a Status section would duplicate the table. The row is **self-documenting**; no PR-creation cost needed this tick.
+
+## Important pattern: well-decomposed umbrellas don't need Status sections
+
+The implicit pattern from this tick: when an umbrella row has a
+clear decomposition + slice-status indicator already in the body
+(checkbox table, slice-state column, etc.), running the row-close
+gate triage is enough — no edit is needed. The row already shows
+its state.
+
+Conversely, B-0532 / B-0533 (where I DID add Status sections) had
+no such indicator — the partial state was invisible without
+explicit annotation.
+
+Rule of thumb: **edit only if the partial state isn't already
+visible to a casual reader**.
+
+## Drift-audit progress tally
+
+After this tick:
+
+- **Class 1 (Pure drift) closed**: B-0506, B-0530, B-0535, B-0494, B-0159 (5; my lane) + B-0528, B-0045.1, B-0046.1, B-0049.1 (4; peer's lane) = **9 total**
+- **Class 2 (Partial completion) Status-annotated**: B-0517 (existing), B-0537 (existing), B-0532 (this session), B-0533 (this session) = **4 total**
+- **Class 3 (Multi-slice, children open) verified-as-self-documenting**: B-0440 (this tick) = **1 example**
+- **Class 4 (Multi-slice, children all closed) closed**: B-0159 (this session) = **1 example**
+- **2nd FP class verified-as-FP**: B-0418 (this session) = **1 example**
+
+Audit-tool surfaced ~38 candidates; **15 triaged** across both Otto lanes. ~23 candidates remaining for future-tick triage.
+
+## Sentinel + close
+
+`CronList`: `bd1c7739` alive.
+
+## Visibility signal
+
+- B-0440 verified as class #3 (no edit needed — self-documenting)
+- Pattern landed: well-decomposed umbrellas don't need Status sections
+- 15 of ~38 audit candidates triaged across both Otto lanes
+- Sentinel `bd1c7739` alive
+- Rate ~2734/5000 (cost-aware)
+- Next-tick candidates: 23 remaining; per-candidate-judgment via the 4-class + FP taxonomy