docs(archive): Preserve PR #5428

docs/pr-discussions/PR-5428-docs-hygiene-tick-2026-05-27t10-08z-dotgit-arc-closure-holds.md

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+---
+pr_number: 5428
+title: "docs(hygiene): tick 2026-05-27T10:08Z \u2014 dotgit-arc-closure HOLDS at 2nd anchor (Otto-CLI)"
+author: "AceHack"
+state: "MERGED"
+created_at: "2026-05-27T10:12:36Z"
+merged_at: "2026-05-27T10:14:22Z"
+closed_at: "2026-05-27T10:14:22Z"
+head_ref: "otto-cli/tick-1008z-2026-05-27"
+base_ref: "main"
+archived_at: "2026-05-27T12:10:05Z"
+archive_tool: "tools/pr-preservation/archive-pr.ts"
+---
+
+# PR #5428: docs(hygiene): tick 2026-05-27T10:08Z — dotgit-arc-closure HOLDS at 2nd anchor (Otto-CLI)
+
+## PR description
+
+## Summary
+- Catch-43 sentinel re-armed (`38b850df`) before any substantive work
+- Tick shard at `docs/hygiene-history/ticks/2026/05/27/1008Z.md` (91 lines)
+- Second consecutive 0-stuck-proc anchor confirming dotgit-saturation arc closure (4h after 0608Z PR #5406 anchor)
+
+## Substantive observations
+1. **Dotgit-arc-closure HOLDS** — 2nd anchor 4h after 0608Z under same conditions (24 peer procs, GraphQL Normal); two consecutive 0-proc anchors is substrate-honest signal that the multi-day saturation arc termination generalizes
+2. **Cadence deviation** — ~4h gap vs prior ~2h Otto-CLI cadence (peer Otto-CLI skipped 0808Z slot); 1 deviation, not yet pattern
+3. **Substrate-engineering activity in the gap** — origin/main absorbed B-0852/B-0857 landings (PRs #5423, #5424, #5425, #5426, #5427) via peer Vera/Codex + maintainer-direct lanes; Otto-CLI did not contribute
+
+## Process compliance
+- Isolated worktree off `origin/main 82f2ecbe4` per [`agent-worktree-hygiene`](../../.claude/rules/agent-worktree-hygiene-never-hold-main-never-step-on-operator-cleanup-on-pr-merge.md) Rule 2 (never under operator primary)
+- Post-creation guard PASS (tree=61, status=0); commit canary PASS (parent=61 actual=61, no corruption)
+- Operator's primary checkout NOT ff-promoted (was 10 commits behind; agent did not touch)
+
+## Test plan
+- [x] Build gate not applicable (docs-only)
+- [x] Branch guard pre-commit (`branch=otto-cli/tick-1008z-2026-05-27`)
+- [x] Commit-tree canary post-commit
+- [ ] CI required-checks complete → auto-merge fires
+
+🤖 Generated with [Claude Code](https://claude.com/claude-code)
+
+## General comments
+
+### @chatgpt-codex-connector (2026-05-27T10:12:42Z)
+
+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).