shard(2026-05-25/0407Z): 19th dotgit anchor — 6th 0-stuck-proc reading + first >1h cadence gap

docs/hygiene-history/ticks/2026/05/25/0407Z.md

@@ -0,0 +1,95 @@
+---
+tick: 2026-05-25T04:07Z
+agent: otto-cli (fresh cold-boot; isolated worktree `/private/tmp/zeta-otto-cli-0407z`)
+status: substantive
+sentinel_armed: d6af86a1 (cron `* * * * *` <<autonomous-loop>>; catch-43 fire — empty `CronList` at session start)
+---
+
+# Tick 0407Z — 19th dotgit anchor: 6th consecutive 0-stuck-proc reading + first >1h cadence gap since arc closure
+
+## Substrate landed
+
+- Sentinel `d6af86a1` re-armed at session start (catch-43 fired — empty `CronList`; per [`tick-must-never-stop.md`](../../../../../../.claude/rules/tick-must-never-stop.md))
+- This tick shard — extends the 0008Z → 0042Z → 0112Z → 0209Z → 0243Z lineage with otto-cli fresh cold-boot at +1h24min after the 18th anchor (first >1h cadence gap since the recovery arc began at 0008Z)
+
+## Observed state at 04:07Z
+
+| Surface | Reading | Δ vs 0243Z (18th anchor, +1h24min ago) |
+|---|---|---|
+| Stuck git pack/maintenance/repack procs | **0** — **6th consecutive clean reading** | same (0→0→0→0→0→0) |
+| Peer agent procs (claude/gemini/kiro/alexa/lior greps) | **45** | new active set (0243Z reported 0 active Lior procs; lane has re-engaged) |
+| GraphQL remaining | 4074/5000 (Normal tier; reset ~45min) | +2193 vs 0243Z's 1881 (new hourly reset) |
+| REST core remaining | 4945/5000 | similar to 0243Z's 4998 |
+| origin/main HEAD | `21a45f51a` (PR #4907 — nix-darwin pin) | **+5 PRs in 1h24min** vs 0243Z's `fbd9d09c6` (Addison/AceHack infra-installer cadence picked up significantly) |
+| Cold-boot root branch | `lior-pr-preservation-rebased` (Lior preservation branch; contaminated working tree with 30+ untracked `lior-*` dirs + 7 modified PR-disc files) | same failure-mode class as anchor #5 + #7 + #8 + #10 + #12 + #13 (fresh sessions land on whoever-was-last-active's branch); 6th empirical anchor for this failure mode |
+| Last hygiene-history shard on main | `0243Z.md` (from PR #4902) | gap of **1h24min** — first >1h gap since 0008Z arc began (prior cadence: 0008Z→0042Z=34min, 0042Z→0112Z=30min, 0112Z→0209Z=57min, 0209Z→0243Z=34min) |
+| Worktree freshness | `/private/tmp/zeta-otto-cli-0407z`; HEAD=`21a45f51a3d4`; ls-tree=**57**, status=0, post-creation freshness guard passed | clean |
+
+## Dotgit-saturation anchor #19 — 6th consecutive clean across three surfaces, first >1h cadence gap
+
+Full series (rolling window from 2026-05-23T10:18Z through this anchor — 41h49min total span):
+
+| Anchor | Time | Stuck procs | Surface | Notes |
+|---|---|---|---|---|
+| 5–13 | 2026-05-23 10:18Z → 2026-05-24 12:08Z | 33–540 | otto-cli (saturation cycle) | extreme-oscillation arc |
+| 14 | 2026-05-25 00:08Z | **0** | otto-cli | first clean (PR #4892) |
+| 15 | 2026-05-25 00:42Z | **0** | otto-vscode bg-worker | 2nd clean (PR #4894) |
+| 16 | 2026-05-25 01:12Z | **0** | otto-vscode bg-worker | 3rd clean (PR #4895) |
+| 17 | 2026-05-25 02:09Z | **0** | otto-cli fresh cold-boot | 4th clean (PR #4896) |
+| 18 | 2026-05-25 02:43Z | **0** | otto-bg-worker fresh cold-boot | 5th clean — third independent surface (PR #4902) |
+| **19 (this shard)** | **2026-05-25 04:07Z** | **0** | **otto-cli fresh cold-boot** | **6th clean + first >1h cadence gap since arc closure** |
+
+Per [`default-to-both.md`](../../../../../../.claude/rules/default-to-both.md) A/B discrimination: the 0243Z shard retired B-direction in operational practice with 5 readings + 3-surface convergence. This 6th reading at +1h24min EXTENDS the series across a longer cadence gap — no return to saturation during the gap. **Possibility A (genuine recovery) is now operationally robust across both short cadence (≤57min) AND longer cadence (>1h)** — the absence of saturation isn't a same-cadence artifact.
+
+## Cadence gap interpretation — two non-exclusive hypotheses preserved
+
+Per [`default-to-both.md`](../../../../../../.claude/rules/default-to-both.md):
+
+- **Possibility C — bg-worker entered longer cycle**: with dotgit recovered, the bg-worker no longer needs ~30min anchor cadence; it may have shifted to longer cycles (60-90min) appropriate to a non-saturated regime. The cadence gap is the loop self-tuning to lower-vigilance mode.
+- **Possibility D — bg-worker paused/stopped between 0243Z and 0407Z**: external pause (operator desktop sleep, session ended, harness issue) explains the gap. The 45 peer agent procs at 0407Z support a renewed-activity reading (vs 0 at 0243Z), consistent with the operator's machine waking up.
+
+Both compose: the operator-side state (machine sleep/wake; harness session lifecycle) is the variable that determines which dominates. No collapse to either is substrate-honest here — the cadence will tell over the next 2-3 ticks.
+
+## Cold-boot-on-peer-branch failure mode — 6th empirical anchor
+
+This session's cold-boot landed on `lior-pr-preservation-rebased` (peer Lior's preservation branch with 30+ untracked `lior-*` dirs + 7 modified PR-disc files in contested root). Composes with the 5 prior empirical anchors of this failure mode (per anchors #5, #7, #8, #10, #12, #13 in user-scope `~/.claude/projects/.../memory/MEMORY.md`; the in-repo `memory/MEMORY.md` is a different index). The pattern is now well-established: fresh sessions inherit the previously-active checkout's branch state.
+
+Mitigation per [`refresh-world-model-poll-pr-gate.md`](../../../../../../.claude/rules/refresh-world-model-poll-pr-gate.md) and [`claim-acquire-before-worktree-work.md`](../../../../../../.claude/rules/claim-acquire-before-worktree-work.md): isolated worktree off `origin/main` (per the rule's "Prefer `origin/main` over `FETCH_HEAD`" guidance, empirically anchored 2026-05-20T16:14Z). The `/private/tmp/zeta-otto-cli-0407z` worktree completed cleanly (6278/6278 files extracted; ls-tree=57, status=0, no canary class corruption).
+
+## Origin/main infra cadence
+
+In the 1h24min gap between 0243Z and 0407Z, 5 infra PRs merged on main:
+
+| SHA | PR | Author | Title |
+|---|---|---|---|
+| `21a45f51a` | #4907 | AceHack | nix-darwin pin to 24.11 release branch |
+| `bb8f0fcc6` | #4906 | AceHack | nix-darwin linux-builder for local x86_64-linux ISO builds |
+| `7565e9320` | #4904 | AceHack | brew + nix CLI permissions for ISO build |
+| `24237782c` | #4903 | AceHack | installer runbook refresh — name shipped hosts |
+| `152d3571a` | #4898 | (Addison's plan) | flake.nix + shared NixOS modules (PR 2 of plan) |
+
+This is consistent shipping cadence on Addison's USB-stick installer line. The Otto-surface lane remained empty during this window (per 0243Z's empty-lane finding); Otto continues to stay out of peer Lior/Addison lanes per [`agent-roster-reference-card.md`](../../../../../../.claude/rules/agent-roster-reference-card.md) lane discipline.
+
+## Brief-ack counter status
+
+This shard is concrete artifact #1 in this session (sentinel re-arm + this shard = #1 substantive emission). Counter at #1; well below the N=6 forced-escalation threshold per [`holding-without-named-dependency-is-standing-by-failure.md`](../../../../../../.claude/rules/holding-without-named-dependency-is-standing-by-failure.md).
+
+## ls-tree=57 — repo grew +4 root entries since the canonical 53-floor anchor
+
+The codeql-canary rule (per [`codeql-no-source-on-docs-only-pr-is-broken-commit-canary.md`](../../../../../../.claude/rules/codeql-no-source-on-docs-only-pr-is-broken-commit-canary.md)) names ls-tree=53 as the canonical floor from the 2026-05-20T14:13Z anchor (validated 6 times in that rule's empirical anchors). My 0407Z reading is **ls-tree=57** — `infra/`, `.kiro/`, and other recent infra-PR additions have moved the floor by +4. The corruption canary still works (the rule's `expected - 2` arithmetic is relative to current main, not the historical 53); just naming the drift so future anchors don't get confused.
+
+## Composes with
+
+- [0243Z](0243Z.md) — 18th dotgit anchor; otto-bg-worker; 5th consecutive clean; third-surface convergence
+- [0209Z](0209Z.md) — 17th dotgit anchor; otto-cli; 4th consecutive clean
+- [0112Z](0112Z.md) — 16th dotgit anchor
+- [0042Z](0042Z.md) — 15th dotgit anchor
+- [0008Z](0008Z.md) — 14th dotgit anchor; arc-closure transition; first clean reading
+- [`tick-must-never-stop.md`](../../../../../../.claude/rules/tick-must-never-stop.md) — catch-43 sentinel re-arm
+- [`refresh-world-model-poll-pr-gate.md`](../../../../../../.claude/rules/refresh-world-model-poll-pr-gate.md) — dotgit-saturation tier table; arc-closure across 19 anchors
+- [`codeql-no-source-on-docs-only-pr-is-broken-commit-canary.md`](../../../../../../.claude/rules/codeql-no-source-on-docs-only-pr-is-broken-commit-canary.md) — post-creation freshness guard passed; ls-tree floor drift to 57 named
+- [`zeta-expected-branch.md`](../../../../../../.claude/rules/zeta-expected-branch.md) — `git branch --show-current` guard before commit
+- [`default-to-both.md`](../../../../../../.claude/rules/default-to-both.md) — A robust across cadence variation; C+D both preserved for the gap question
+- [`holding-without-named-dependency-is-standing-by-failure.md`](../../../../../../.claude/rules/holding-without-named-dependency-is-standing-by-failure.md) — concrete artifact #1; counter at #1
+- [`agent-roster-reference-card.md`](../../../../../../.claude/rules/agent-roster-reference-card.md) — lane discipline (Otto stays out of Lior/Addison lanes)
+- [`claim-acquire-before-worktree-work.md`](../../../../../../.claude/rules/claim-acquire-before-worktree-work.md) — isolated worktree off `origin/main` per the 2026-05-20 anchor