Agent Skills: db-migrator

Database schema migration, versioning, and rollback management for SQL and NoSQL databases. Use when: (1) creating database migrations, (2) modifying table schemas, (3) adding/removing columns, (4) creating indexes, (5) data migrations, (6) rollback operations, (7) multi-environment sync, (8) seed data management. Supports PostgreSQL, MySQL, MongoDB, SQLite. Triggers: "migration", "alter table", "schema change", "database migration", "rollback migration", "knex", "prisma migrate", "flyway", "alembic".