Full cleanup pass

lib/create/backendSyncEnabled.ts

@@ -0,0 +1,7 @@
+/**
+ * Server draft sync for the create flow.
+ * Default-on: set `NEXT_PUBLIC_ENABLE_BACKEND_SYNC=false` to disable locally.
+ */
+export function isBackendSyncEnabled(): boolean {
+  return process.env.NEXT_PUBLIC_ENABLE_BACKEND_SYNC !== "false";
+}