improve admin release and deployment safeguards

prisma/migrations/20260708094000_rename_launcher_common_settings/migration.sql

@@ -1,3 +1,8 @@
 ALTER TABLE IF EXISTS "launcher_common_settings" RENAME TO "launcher_settings";
 
-COMMENT ON TABLE "launcher_settings" IS '런처 소스, 빌드 환경 등 내부 설정';
+DO $$
+BEGIN
+  IF to_regclass('public.launcher_settings') IS NOT NULL THEN
+    COMMENT ON TABLE "launcher_settings" IS '런처 소스, 빌드 환경 등 내부 설정';
+  END IF;
+END $$;