Benjamin D. Smith 50c474ba72 feat(pr-prep): pre-PR upstream duplicate audit skill ... Walks `git log base..HEAD`, derives search keywords per commit from subject + changed file paths, queries upstream issues + PRs via `gh`, scores each commit against upstream collisions (EXACT_DUP / OVERLAP / SIBLING / CLEAN) on a title-token + file-overlap Jaccard, and refuses to proceed when EXACT_DUP found. Designed to slot into `/ship` as a Step 0 hook (env `GSTACK_FROM_SHIP=1` switches to JSON output + skips interactive prompts). Motivating case (real, 2026-05-26): a contributor branch had 8 commits ready for upstream PRs; 4 of 4 unverified commits would have duplicated already-open upstream issues. pr-prep catches all in ~30-60s of `gh` queries, before any noise PR or reviewer triage round. v0.1.0 ships inline bash in SKILL.md (reviewable in one file). Out of scope: diff-content similarity, cross-repo audit, LLM-judged semantic dup detection, auto-comment on upstream PRs. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>		2026-07-02 21:56:31 +10:00
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llms.txt	feat(pr-prep): pre-PR upstream duplicate audit skill	2026-07-02 21:56:31 +10:00