triage-issues gains a silently-fixed detection ladder, strongest
evidence first: mechanism-anchor (git log -L on the root-cause:found
file:line since the issue date), repro re-run against current main, and
symptom search over commits/CHANGELOG/merged PR titles. CLOSE-FIXED
always names its evidence; an unverified hunch only asks the reporter
to retry.
pr-review's merge verdicts now search open issues for the symptom a bug
fix resolves and propose Closes #N, so fixes stop landing unlinked.