diff --git a/migrations/016_playbooks_description_column.sql b/migrations/016_playbooks_description_column.sql
new file mode 100644
index 0000000..5c91c00
--- /dev/null
+++ b/migrations/016_playbooks_description_column.sql
@@ -0,0 +1,11 @@
+-- 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 $$
+BEGIN
+    RAISE NOTICE '✅ Migration 016 完成 — playbooks.description 欄位已補齊';
+END $$;