fix(foundry): copy playlists before deleting the unpacked archive

Archive import removed the temp folder before playlist tracks were read, so zip imports with music failed. The dialog hint now names .zip / .fvtt instead of .world.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/main/project/zipStore.legacyContract.test.ts

@@ -67,6 +67,15 @@ void test('zipStore: closeOpenProject is serialized with open on projectSwitchCh
   assert.match(src, /Открытие проекта отменено/);
 });
 
+void test('zipStore: Foundry archive playlists are copied before temp unzip cleanup', () => {
+  const src = fs.readFileSync(path.join(here, 'zipStore.ts'), 'utf8');
+  const fn = src.slice(src.indexOf('async importProjectFromFoundry'));
+  const body = fn.slice(0, fn.indexOf('\n  async exportProjectZipToPath'));
+  const copyAt = body.indexOf('await importPlaylists(pendingAppPlaylists)');
+  const cleanupAt = body.indexOf('await loaded.cleanup()');
+  assert.ok(copyAt > 0 && cleanupAt > copyAt);
+});
+
 void test('zipStore: exportProjectZipToPath flushes saveNow for currently open project', () => {
   const src = fs.readFileSync(path.join(here, 'zipStore.ts'), 'utf8');
   assert.match(src, /async exportProjectZipToPath/);