S2 — Apply migration 041 PASS
bunx psql -f migrations/041_dedup_feature_requests_source_incident.sql against the broken state
Evidence captured against canary dev DB. The migration completes inside a single BEGIN/COMMIT. UPDATE 3 = three non-canonical duplicates NULL-ified. CREATE INDEX = partial unique index restored. No preview banner.
BEGIN
UPDATE 3
DO
CREATE INDEX
COMMIT