-- Add status column to sys_user and backfill from is_active
ALTER TABLE sys_user ADD COLUMN status VARCHAR(20) NOT NULL DEFAULT 'enabled';
UPDATE sys_user SET status = CASE WHEN is_active = 1 THEN 'enabled' ELSE 'disabled' END;

-- Optional cleanup (uncomment if you want to remove is_active)
-- ALTER TABLE sys_user DROP COLUMN is_active;