'use strict';

// The order_index/is_required linear sequencing lock (added in
// 20260709000005-add-order-index-and-is-required-to-tasks) is redundant now
// that tasks have an explicit prerequisite graph (task_prerequisites, added
// in 20260717000001-create-task-prerequisites). Locking a task is now purely
// a function of its task_prerequisites rows — a task with none is never
// implicitly locked by its position in the list. order_index is kept as a
// display-order-only column.

module.exports = {
  async up(queryInterface) {
    await queryInterface.removeColumn('tasks', 'is_required');
  },

  async down(queryInterface, Sequelize) {
    await queryInterface.addColumn('tasks', 'is_required', {
      type: Sequelize.BOOLEAN,
      allowNull: false,
      defaultValue: true,
      after: 'order_index',
    });
  },
};