DELETE FROM qipai_schema_migrations WHERE version = '2026081005'; DROP TABLE IF EXISTS qipai_cleaning_task_submissions; DROP TABLE IF EXISTS qipai_cleaning_task_photos; ALTER TABLE qipai_cleaning_tasks DROP FOREIGN KEY fk_qipai_cleaning_tasks_template, DROP CONSTRAINT chk_qipai_cleaning_task_photo_rule, DROP CONSTRAINT chk_qipai_cleaning_task_exempt_policy, DROP COLUMN rework_count, DROP COLUMN exempt_policy, DROP COLUMN max_photo_count, DROP COLUMN min_photo_count, DROP COLUMN photo_required, DROP COLUMN cleaning_template_version, DROP COLUMN cleaning_template_id; DROP TABLE IF EXISTS qipai_cleaning_templates;