docs(archive): Lior preservation discipline for PR 3729

docs/pr-discussions/PR-3729-shard-tick-2026-05-16t04-15z-pr-3722-copilot-p1-fix-thread-r.md

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+---
+pr_number: 3729
+title: "shard(tick): 2026-05-16T04:15Z \u2014 PR #3722 Copilot P1 fix + thread resolved"
+author: "AceHack"
+state: "MERGED"
+created_at: "2026-05-16T04:18:48Z"
+merged_at: "2026-05-16T04:20:01Z"
+closed_at: "2026-05-16T04:20:01Z"
+head_ref: "shard/tick-0415z-otto-cli-2026-05-16"
+base_ref: "main"
+archived_at: "2026-05-16T04:21:56Z"
+archive_tool: "tools/pr-preservation/archive-pr.ts"
+---
+
+# PR #3729: shard(tick): 2026-05-16T04:15Z — PR #3722 Copilot P1 fix + thread resolved
+
+## PR description
+
+## Summary
+
+- Cold-boot autonomous-loop tick. Sentinel was missing on wake; armed `<<autonomous-loop>>` first per catch-43 rule.
+- Fixed PR #3722 Copilot P1: inline code span with literal backtick inside character class. Switched to double-backtick code-span form.
+- Thread `PRRT_kwDOSF9kNM6ChX1O` resolved via GraphQL `resolveReviewThread` mutation; PR #3722 gate moved BLOCKED → wait-ci, auto-merge re-armed.
+- Peer Otto-CLI detected on wake (PIDs 2706 + 2710, Claude Desktop). Substantive work confined to non-pack-contending operations.
+
+## Test plan
+
+- [x] `bun tools/hygiene/check-shard-before-push.ts` ok on this shard (MD032 + markdownlint + relative-path audit)
+- [x] `bun tools/hygiene/check-shard-before-push.ts` ok on fixed 0354Z shard
+- [x] PR #3722 `bun tools/github/poll-pr-gate.ts` returns `unresolvedThreads: 0`
+- [x] PR #3722 auto-merge armed; CI required checks rerunning post-fix-commit
+
+🤖 Generated with [Claude Code](https://claude.com/claude-code)
+
+## Reviews
+
+### COMMENTED — @copilot-pull-request-reviewer (2026-05-16T04:19:52Z)
+
+## Pull request overview
+
+Hygiene-history tick shard documenting a cold-boot autonomous-loop tick that fixed a Copilot P1 finding on PR #3722 (markdown code-span with literal backtick) and resolved its review thread.
+
+**Changes:**
+- Adds a new tick shard under `docs/hygiene-history/ticks/2026/05/16/0415Z.md` describing the wake state, fix landed, and dependency waits.