Fix save progress bug

lib/create/buildCreateFlowDraftPayload.ts

@@ -0,0 +1,12 @@
+import type { CreateFlowState, CreateFlowStep } from "../../app/(app)/create/types";
+
+/** Snapshot for save-progress / draft transfer (includes optional resume step). */
+export function buildCreateFlowDraftPayload(
+  state: CreateFlowState,
+  currentStep?: CreateFlowStep | null,
+): CreateFlowState {
+  return {
+    ...state,
+    ...(currentStep ? { currentStep } : {}),
+  };
+}