shard(tick): 2026-05-16T16:34Z — cascade complete; lint-failure-as-named-dep loop closed#3908
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AceHack merged 2 commits intoMay 16, 2026
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…green-ci rule This session's empirical evidence (5 stale-armed PR investigations between 13:10Z and 16:33Z) clarifies three distinct resolution patterns: close-as-redundant, re-land-via-cherry-pick, and forward-signal-comment. Added a decision tree and links to the empirical instances. Composes with the forced-escalation-finds-hidden-work anchor on holding-without-named-dependency rule (PR #3901). Co-Authored-By: Claude <noreply@anthropic.com>
…med-dep loop closed 1h 03m cascade from 1531Z → 1634Z. PRs #3897 (B-0462), #3898 (1535Z shard), #3900 (1547Z shard), #3903 (1610Z + path-depth table) all merged. PR #3906 (fix-1547z-on-main) auto-merging cleanly (22/25 SUCCESS, 2 pending). Substrate-honest lessons: - Auto-merge race (sub-case 5 of claim-acquire saturation-ceiling) - Lint check classification: broken paths on main propagate as new errors to subsequent PRs via the audit's all-shards scan - Path-depth reference table (1610Z, PR #3903) is the durable substrate fix Persistent contamination: git branch --show-current caught HEAD-shift to 5 different peer-Otto branches across 5 cron fires; no commits landed on peer branches. Co-Authored-By: Claude <noreply@anthropic.com>
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Pull request overview
Docs-only tick shard documenting a 1-hour cascade of 5 PRs landing, plus an addition to a rule file describing three resolution patterns for stale-armed PRs.
Changes:
- New tick shard
1634Z.mdsummarizing the cascade, substrate-honest lessons (auto-merge race, lint propagation, path-depth table), and persistent branch-contamination observations - New "Stale-armed-PR resolution patterns" section in
blocked-green-ci-investigate-threads.mdwith decision tree (close-redundant / re-land-cherry-pick / forward-signal)
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
| docs/hygiene-history/ticks/2026/05/16/1634Z.md | New tick shard recording cascade completion and contamination observations |
| .claude/rules/blocked-green-ci-investigate-threads.md | Adds stale-armed PR resolution pattern table + decision tree |
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Summary
1h 03m cascade from 1531Z → 1634Z. PRs #3897 (B-0462), #3898 (1535Z shard), #3900 (1547Z shard), #3903 (1610Z + path-depth table) all merged. PR #3906 (fix-1547z-on-main) auto-merging cleanly.
Substrate-honest lessons documented
Persistent contamination class — empirical anchor
`git branch --show-current` caught HEAD-shift to 5 different peer-Otto branches across 5 consecutive cron fires. Zero commits landed on peer branches. The branch-discipline rule (not the env-var hook) is the primary catch.
Test plan
🤖 Generated with Claude Code