diff --git a/scripts/retire-nonofficial-workflow-definitions.sql b/scripts/retire-nonofficial-workflow-definitions.sql
new file mode 100644
index 00000000..9ed66658
--- /dev/null
+++ b/scripts/retire-nonofficial-workflow-definitions.sql
@@ -0,0 +1,16 @@
+-- 退休非正式 active 工作流定义（保留 main / product_manager / test_manager）
+-- Dry-run:
+--   SELECT def_key, status FROM workflow_definitions
+--   WHERE status = 'active' AND def_key NOT IN ('main','product_manager','test_manager');
+-- 用法:
+--   psql "$DATABASE_URL" -f scripts/retire-nonofficial-workflow-definitions.sql
+
+BEGIN;
+
+UPDATE workflow_definitions
+SET status = 'retired',
+    updated_at = now()
+WHERE status = 'active'
+  AND def_key NOT IN ('main', 'product_manager', 'test_manager');
+
+COMMIT;