-- 017: 为 market_apps 增加 capability 列（能力分类：text/thinking/vision/tool/image/audio/asr/ocr/embedding/rerank/video）
-- 幂等：列已存在则跳过
SET @col = (SELECT COUNT(*) FROM information_schema.columns
            WHERE table_schema = DATABASE() AND table_name = 'market_apps' AND column_name = 'capability');
SET @sql = IF(@col = 0,
    'ALTER TABLE market_apps ADD COLUMN capability VARCHAR(20) NULL COMMENT \'能力分类：text/thinking/vision/tool/image/audio/asr/ocr/embedding/rerank/video\'',
    'SELECT 1');
PREPARE stmt FROM @sql;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;