The rows this skill keeps in the Markers table of the stack file (docs/architecture/stack.md), exactly as they appear there. Replace <location> with the migration directory from the Location column of the Migration row.

Layer	Skill	Kind	Marker to grep for
Migration	flyway-schema	Code	`-- UC-XXX BR-YYY:` directly above the `CHECK`, `UNIQUE`, index, or trigger that enforces the rule
Migration	flyway-schema	Name	`<location>/V__.sql`, named after the tables they change, never after a use case — search them by table and column