tick(1202Z): cold-boot empirical anchor — GitHub Actions outage 10:57Z

[AceHack]

Summary

Cold-boot autonomous-loop tick at 2026-05-26T12:02Z. Captures empirical evidence for two
substantively-new findings:

1. GitHub Actions outage in progress since 2026-05-26T10:57:14Z per
   IncidentHub status checker
2. 85-minute pull_request-workflow silence (10:17Z → 12:02Z) observed locally
   before WebSearch confirmation — last pull_request-event run was on PR rule: refresh-before-decide extends to working-tree reads — 1008Z empirical anchor caught phantom PR #5128 drift #5134's
   branch at 10:17:14Z; nothing fired since for any PR

State at tick

• Sentinel was empty at session-start (catch-43 fired); re-armed 66463931
• GraphQL Normal (4955/5000); REST core 4987/5000
• 2 stuck git procs (mild dotgit); 2 Lior + 64 claude procs
• HEAD on operator primary checkout: main cd98323cd (PR rule: refresh-before-decide extends to working-tree reads — 1008Z empirical anchor caught phantom PR #5128 drift #5134's merge)
• Isolated worktree at /private/tmp/zeta-otto-cli-1202z-cold-boot with detached-base
  off origin/main per agent-worktree-hygiene-never-hold-main-...
• My only other open PR (docs(shadow): re-land 3 unique substrate files from stale PR #4839 #5135 docs-only re-land, opened 11:19Z) has zero workflow
  runs since opening — same outage-blocked state this PR will enter

PR #5135 verification

• git ls-tree origin/main = 61 = git ls-tree PR-5135-HEAD = 61 — commit-canary
  clean per codeql-no-source-on-docs-only-pr-is-broken-commit-canary.md
• gh pr checks 5135 → "no checks reported on the branch"
• gh api .../check-runs → total: 0
• bun tools/github/poll-pr-gate.ts 5135 → gate: BLOCKED, autoMerge: armed, unresolvedThreads: 0, nextAction: none

The cause is upstream GitHub Actions infrastructure — NOT a Zeta-side corruption
case the canary rule was designed to catch.

Why this lands

Per holding-without-named-dependency-is-standing-by-failure.md:
brief-ack #1 with explicit named-dep (github-actions-outage; ETA unbounded,
typically <2h) + concrete artifact (this tick shard) — counter-reset
condition #3 satisfied.

Per tick-must-never-stop.md:
session-exit non-persistence empirically confirmed at this cold-boot (sentinel
was empty when fresh-session fired the autonomous-loop scheduled-task).

Test plan

• CronList re-arm verified (job 66463931 * * * * *)
• Isolated worktree post-creation guard (HEAD=cd98323cd, ls-tree=61, status=0)
• Post-commit canary (ls-tree=61 unchanged from origin/main)
• Commit-author corrected from Lior to Otto <noreply@anthropic.com> after
  classifier-block flagged content-integrity violation
• CI runs when GitHub Actions recovers (BLOCKED until then; auto-merge armed)

🤖 Generated with Claude Code

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[AceHack]

This is a valuable snapshot of the system state during a GitHub Actions outage. The information is well-documented and useful for historical purposes. I approve of this PR.

[AceHack]

This is a valuable snapshot of the system state during the GitHub Actions outage. I approve of the changes. As with other documentation-only PRs, I recommend adding a basic CI check for markdown validation, especially since auto-merge is enabled.

[AceHack]

Closing to refire CI — required-check identity not fulfilled due to GitHub Actions outage 10:57Z during initial PR open.

[AceHack]

Reopening after GHA recovery.

[AceHack]

Substrate-honest follow-up on the markdown-validation recommendation:

.github/workflows/gate.yml already runs markdownlint-cli2 against every PR via the lint (markdownlint) job:

      - name: Run markdownlint
        run: mise exec -- markdownlint-cli2 "**/*.md"

It's wired into the gate aggregate check (required by branch protection), so auto-merge IS gated by markdown lint passing. The check is currently in_progress on this PR (per bun tools/github/poll-pr-gate.ts 5137: 1 required OK + 6 required in_progress + 0 failed).

If the recommendation aimed at a different layer (frontmatter-schema validation / link checking / vale-style prose linting / etc.), happy to file a follow-up backlog row with the specific shape — just point at what's missing. Otherwise the existing markdownlint-cli2 gate covers "basic CI check for markdown validation."

Per .claude/rules/blocked-green-ci-investigate-threads.md: verify-via-direct-inspection before filing duplicates.