/**
 * @param { import("knex").Knex } knex
 * @returns { Promise<void> }
 */
exports.up = function(knex) {
  return knex.schema.table('field_definitions', (table) => {
    table.jsonb('ui_metadata').nullable().comment('JSON metadata for UI rendering including display options, validation rules, and field-specific configurations');
  });
};

/**
 * @param { import("knex").Knex } knex
 * @returns { Promise<void> }
 */
exports.down = function(knex) {
  return knex.schema.table('field_definitions', (table) => {
    table.dropColumn('ui_metadata');
  });
};