Add test/labels-triggers.test.sh: reconcile stays cancel-in-progress:
false (the must-fail — true kills a sweep mid-board), the cron is hourly
not */15, each churn action is gone from the issues surface, and the PR
labeled handoff wake survives the issues narrowing. Update the #137/#144
parity block in labels.test.sh to the narrowed [opened, closed] contract
and replace its fragile inline pull_request_target scan (the #199 prose
comments name the trigger keys) with the anchored event_types reader.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>