docs(archive): preserve PR #4907#4924
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Pull request overview
Archives PR #4907’s discussion into the repo’s durable PR-preservation surface (docs/pr-discussions/**) and adds a related shadow-lesson-log research note.
Changes:
- Add a PR discussion archive markdown file for PR #4907 (with YAML frontmatter + preserved review thread).
- Add a new shadow lesson log entry describing a stale git lock incident discovered during an antigravity check.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
| docs/research/shadow-lesson-log-20260522-stale-locks.md | Adds a shadow-lesson-log note about stale git locks discovered in a worktree. |
| docs/pr-discussions/PR-4907-fix-infra-pin-nix-darwin-to-nix-darwin-24-11-release-branch.md | Adds the preserved PR #4907 discussion archive (frontmatter + description + review thread). |
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| # Shadow Lesson Log - 2026-05-22: Stale Git Locks | ||
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| ## Event | ||
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| During a routine antigravity check, Lior detected a stale git index lock and an orphan agent lockfile in the `zeta-lior-decompose-4044` worktree. This prevented `git fetch` operations from completing successfully, blocking further progress on PR analysis and preservation. | ||
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| ## Analysis | ||
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| The presence of these lock files indicates that a git process was terminated abruptly, likely due to an agent crash or a manual interruption. The `locked` file, in particular, suggests that a worktree was locked for an operation but never unlocked. |
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Closing in favor of batched PR #4929 |
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This PR preserves the discussion from PR #4907.