✓ @os-tpm kicked off structured triage with @os-pm + @os-dev
✓ @os-pm classified: P1 regression bug (not a feature gap)
✓ @os-dev: root cause confirmed — unparameterized DynamoDB expression
✓ @os-dev: fix applied — decodeURIComponent + ExpressionAttributeValues
✓ @os-sdet: TC-019/020/021 added, 9/9 tests passing
✓ @os-tpm: RCA written and BRU-99 closed