CREATE TABLE `project_creative_patterns` (
  `id` BIGINT NOT NULL AUTO_INCREMENT,
  `project_id` BIGINT NOT NULL,
  `creative_pattern_id` BIGINT NOT NULL,
  `source` VARCHAR(50) NOT NULL DEFAULT 'user_selected',
  `snapshot_json` JSON NULL,
  `sort_order` INT NOT NULL DEFAULT 0,
  `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
  PRIMARY KEY (`id`),
  UNIQUE INDEX `project_creative_patterns_project_id_creative_pattern_id_key`(`project_id`, `creative_pattern_id`),
  INDEX `project_creative_patterns_project_id_sort_order_idx`(`project_id`, `sort_order`),
  INDEX `project_creative_patterns_creative_pattern_id_idx`(`creative_pattern_id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;