docs(archive): Preserve PR #5271

docs/pr-discussions/PR-5271-shard-1808z-cold-boot-catch-43-re-arm-12h-gap-cold-boot-casc.md

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+---
+pr_number: 5271
+title: "shard(1808Z): cold-boot, catch-43 re-arm, 12h-gap cold-boot-cascade continues"
+author: "AceHack"
+state: "MERGED"
+created_at: "2026-05-26T18:11:23Z"
+merged_at: "2026-05-26T18:17:29Z"
+closed_at: "2026-05-26T18:17:29Z"
+head_ref: "otto-cli/tick-1808z-cold-boot-cron-rearm-2026-05-26"
+base_ref: "main"
+archived_at: "2026-05-26T20:19:43Z"
+archive_tool: "tools/pr-preservation/archive-pr.ts"
+---
+
+# PR #5271: shard(1808Z): cold-boot, catch-43 re-arm, 12h-gap cold-boot-cascade continues
+
+## PR description
+
+## Summary
+
+- Tick shard at `docs/hygiene-history/ticks/2026/05/26/1808Z.md`
+- 12h gap since 0608Z; fresh cold-boot with sentinel missing (catch-43 fired)
+- Named bounded wait: peer Lior PR #5269 preserve-5263 (CodeQL in-flight)
+- Brief-ack #1 valid per `holding-without-named-dependency-is-standing-by-failure.md` N=6 counter
+- Empirically anchors cold-boot-cascade pattern continuing across 2026-05-25/26 boundary
+
+## Worldview at tick
+
+| Signal | State |
+|---|---|
+| Dotgit-saturation | 0 stuck procs (clean) |
+| GraphQL tier | Normal (3601/5000) |
+| REST core | 4639/5000 |
+| Peer activity | 6 Lior loop procs |
+| Sentinel | `76fdab6a` (re-armed) |
+
+## Composes with
+
+- [`tick-must-never-stop.md`](../blob/main/.claude/rules/tick-must-never-stop.md) — catch-43 fired
+- [`fighting-past-self-vs-peer-agent-distinguisher-...md`](../blob/main/.claude/rules/fighting-past-self-vs-peer-agent-distinguisher-fix-your-own-coordinate-on-peers-dont-punt-by-default.md) — peer Lior discriminator
+- [`holding-without-named-dependency-is-standing-by-failure.md`](../blob/main/.claude/rules/holding-without-named-dependency-is-standing-by-failure.md) — N=6 counter brief-ack #1
+- [`codeql-no-source-on-docs-only-pr-is-broken-commit-canary.md`](../blob/main/.claude/rules/codeql-no-source-on-docs-only-pr-is-broken-commit-canary.md) — verify-before-defer 9th anchor (post-creation guard + commit canary both pass: parent=61, head=61)
+
+## Reviews
+
+### COMMENTED — @copilot-pull-request-reviewer (2026-05-26T18:13:54Z)
+
+## Pull request overview
+
+Adds a new hygiene-history tick shard documenting the 2026-05-26 1808Z cold-boot session state (catch-43 sentinel re-arm, 12h gap since prior tick), and records the chosen “named bounded wait” disposition while a peer PR’s CI is in flight.
+
+**Changes:**
+- Introduces a new tick shard file at `docs/hygiene-history/ticks/2026/05/26/1808Z.md`.
+- Captures session “worldview” metrics, holding discipline decision, and cross-links to relevant `.claude/rules/*` substrate.
+
+## Review threads
+
+### Thread 1: docs/hygiene-history/ticks/2026/05/26/1808Z.md:34 (resolved)
+
+**@copilot-pull-request-reviewer** (2026-05-26T18:13:53Z):
+
+Line 34 begins with a literal `+` at start-of-line, which Markdown treats as a list marker. This violates the repo convention because markdownlint MD004/ul-style can parse it as a nested `+` bullet (CI-blocking). Reword the continuation so the line does not start with `+` (e.g., fold into prior line or start with “and/plus”). See `.github/copilot-instructions.md:287-294`.
+
+### Thread 2: docs/hygiene-history/ticks/2026/05/26/1808Z.md:52 (resolved)
+
+**@copilot-pull-request-reviewer** (2026-05-26T18:13:54Z):
+
+The discriminator table uses `||` at the start of each row (e.g., `|| Discriminator | Result | Classification |`), which creates an unintended empty first column in Markdown rendering. If the intent is a 3-column table (like other tick shards), switch these rows to a single leading `|` so the columns line up as expected.
+
+## General comments
+
+### @chatgpt-codex-connector (2026-05-26T18:11:29Z)
+
+You have reached your Codex usage limits for code reviews. You can see your limits in the [Codex usage dashboard](https://chatgpt.com/codex/cloud/settings/usage).