The merged detector's 0.6 flag threshold had become the close bar, and 6 of the 7 real flagged pairs at 85% or more were not duplicates. The sweep now closes only when an older open issue has the identical normalized title, measures the grace period from the latest bot notice, and leaves the issue open when anyone replies or gives the notice a thumbs down.
A reporter cannot reopen an issue the bot closed, so a reporter comment after the automatic close reopens it, drops the duplicate label, and asks for a human look. Manual dispatch defaults to a dry run and takes a grace_period_days input, the runner supplies the repository, the dead python closer is gone, and the decision core has bun tests on a PR-triggered job.
Add a Python script that detects duplicate issues using title similarity
(difflib.SequenceMatcher) and closes them via the gh CLI. Two-tier system:
- 0.6 threshold: informational comment via existing wow-actions step
- 0.85 threshold: auto-close with comment, label, and not_planned reason
Includes a workflow_dispatch workflow for one-time batch scans and
integrates auto-close into the existing check_duplicate_issues workflow
for newly opened issues.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
