Use raw file uploads

server/public/app.js

@@ -904,13 +904,21 @@ async function uploadFileList(win, files, targetPath) {
   const uploadItems = normalizeUploadItems(files);
   for (const [index, item] of uploadItems.entries()) {
     recordDebug('upload.file.request', { path: item.path, size: item.file.size, index: index + 1, total: uploadItems.length });
-    const form = new FormData();
-    form.append('files', item.file, item.file.name);
-    form.append('relativePath', item.path);
-    appendCsrf(form);
-    await fetchChecked(apiUrl(`upload.php?path=${encodeURIComponent(targetPath)}`), {
+    const params = new URLSearchParams({
+      path: targetPath,
+      relativePath: item.path
+    });
+    const token = getCsrfToken();
+    if (token) {
+      params.set('csrf_token', token);
+      recordDebug('csrf.attached', { length: token.length });
+    } else {
+      recordDebug('csrf.missing', {});
+    }
+    await fetchChecked(apiUrl(`upload.php?${params.toString()}`), {
       method: 'POST',
-      body: form
+      headers: { 'Content-Type': 'application/octet-stream' },
+      body: item.file
     });
     recordDebug('upload.file.done', { path: item.path, index: index + 1, total: uploadItems.length });
   }