renderizando projetos com sample tracks. basslines ok

assets/js/creations/main.js

@@ -5,7 +5,7 @@ import {
   restartAudioEditorIfPlaying,
 } from "./audio/audio_audio.js";
 import { initializeAudioContext } from "./audio.js";
-import { handleFileLoad, generateMmpFile, generateXmlFromStateExported } from "./file.js";
+import { handleFileLoad, generateMmpFile, generateXmlFromStateExported, buildRenderPackageBase64 } from "./file.js";
 import {
   renderAll,
   loadAndRenderSampleBrowser,
@@ -156,6 +156,9 @@ document.addEventListener("DOMContentLoaded", () => {
         format: chosenFormat, // ✅ sem shorthand
         name: appState.global?.currentBeatBasslineName || appState.global?.projectName || "projeto",
       };
+      const pkg = await buildRenderPackageBase64(body.name);
+      body.mmpzBase64 = pkg.mmpzBase64;
+      body.mmpzName = pkg.mmpzName;
 
       // ✅ Modo Local: manda XML direto (senão dá missing_xml_or_room)
       if (!roomName) {