-- Migration 016: Add missing description column to playbooks table
-- Fixes: sqlalchemy.exc.ProgrammingError on PlayBook seed (description column missing)
-- Author: Antigravity / ADR-013

ALTER TABLE playbooks
    ADD COLUMN IF NOT EXISTS description TEXT;

DO $$
BEGIN
    RAISE NOTICE '✅ Migration 016 完成 — playbooks.description 欄位已補齊';
END $$;