ALTER TABLE `characters`
  ADD COLUMN `global_character_look_version_id` BIGINT NULL,
  ADD COLUMN `global_character_asset_id` BIGINT NULL,
  ADD COLUMN `inherit_voice_from_global` BOOLEAN NOT NULL DEFAULT false,
  ADD COLUMN `inherit_digital_human_from_global` BOOLEAN NOT NULL DEFAULT false,
  ADD INDEX `characters_global_character_look_version_id_idx` (`global_character_look_version_id`),
  ADD INDEX `characters_global_character_asset_id_idx` (`global_character_asset_id`);

CREATE TABLE `global_character_look_versions` (
  `id` BIGINT NOT NULL AUTO_INCREMENT,
  `global_character_id` BIGINT NOT NULL,
  `version_name` VARCHAR(160) NOT NULL,
  `style_type` VARCHAR(80) NULL,
  `appearance_desc` TEXT NULL,
  `hair_desc` TEXT NULL,
  `makeup_desc` TEXT NULL,
  `body_desc` TEXT NULL,
  `costume_rules` TEXT NULL,
  `color_palette` TEXT NULL,
  `key_props` TEXT NULL,
  `negative_rules` TEXT NULL,
  `main_anchor_asset_id` BIGINT NULL,
  `status` VARCHAR(50) NOT NULL DEFAULT 'candidate',
  `quality_score` DECIMAL(5,2) NULL,
  `reviewer_comment` TEXT NULL,
  `source_project_id` BIGINT NULL,
  `created_by_user_id` BIGINT NULL,
  `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
  `updated_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3) ON UPDATE CURRENT_TIMESTAMP(3),
  PRIMARY KEY (`id`),
  INDEX `global_character_look_versions_global_character_id_status_idx` (`global_character_id`, `status`),
  INDEX `global_character_look_versions_main_anchor_asset_id_idx` (`main_anchor_asset_id`),
  INDEX `global_character_look_versions_source_project_id_idx` (`source_project_id`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

ALTER TABLE `global_character_assets`
  ADD COLUMN `look_version_id` BIGINT NULL,
  ADD COLUMN `source_type` VARCHAR(50) NOT NULL DEFAULT 'upload',
  ADD COLUMN `source_label` VARCHAR(160) NULL,
  ADD COLUMN `negative_prompt` TEXT NULL,
  ADD COLUMN `model_name` VARCHAR(160) NULL,
  ADD COLUMN `seed` VARCHAR(100) NULL,
  ADD COLUMN `resolution` VARCHAR(50) NULL,
  ADD COLUMN `aspect_ratio` VARCHAR(50) NULL,
  ADD COLUMN `cost_estimate` DECIMAL(12,4) NULL,
  ADD COLUMN `cost_actual` DECIMAL(12,4) NULL,
  ADD COLUMN `quality_score` DECIMAL(5,2) NULL,
  ADD COLUMN `consistency_score` DECIMAL(5,2) NULL,
  ADD COLUMN `face_similarity_score` DECIMAL(5,2) NULL,
  ADD COLUMN `license_status` VARCHAR(50) NOT NULL DEFAULT 'internal_test',
  ADD COLUMN `commercial_allowed` BOOLEAN NOT NULL DEFAULT false,
  ADD COLUMN `review_status` VARCHAR(50) NOT NULL DEFAULT 'pending',
  ADD COLUMN `reviewer_note` TEXT NULL,
  ADD COLUMN `usage_count` INT NOT NULL DEFAULT 0,
  ADD COLUMN `metadata_json` JSON NULL,
  ADD INDEX `global_character_assets_look_version_id_idx` (`look_version_id`),
  ADD INDEX `global_character_assets_source_type_idx` (`source_type`),
  ADD INDEX `global_character_assets_review_status_idx` (`review_status`);