- Skip closing an issue as duplicate of another that is already closed
(avoids circular closure when bot and human close in opposite order).
- Skip when duplicate target is self (same issue number).
- Extract testable helpers: isDupeComment, isDupeCommentOldEnough,
authorDisagreedWithDupe, getLastDupeComment, decideAutoClose.
- Add 23 unit tests (Bun) and run them in CI before auto-close step.
- Add scripts/AUTO_CLOSE_DUPLICATES_CROSS_VERIFY.md for impact summary.
Co-authored-by: Cursor <cursoragent@cursor.com>
mishrapravin114