create-migration

name	create-migration
description	Create a Knex database migration for the backend. Use when asked to create a migration, add a table, add columns, or change the database schema.

Read backend/docs/database-migrations.md before doing anything — it contains all patterns, conventions, and examples for this skill.

Run the migrate:make script to generate the file, then implement up and down following the patterns in that doc:

cd backend && npm run migrate:make <migration_name>