added upload uboot

web/app.js

@@ -15,6 +15,7 @@ document.addEventListener("DOMContentLoaded", function () {
   const mountStatus = document.getElementById("mount-status");
   const extlinuxEditor = document.getElementById("extlinux-editor");
   const editorStatus = document.getElementById("editor-status");
+  const uploadHint = document.getElementById("upload-hint");
 
   // Tab buttons
   const tabBtns = document.querySelectorAll(".tab-btn");
@@ -32,6 +33,13 @@ document.addEventListener("DOMContentLoaded", function () {
       this.classList.add("active");
       uploadType.value = this.dataset.type;
       hideResult();
+
+      // Show/hide U-Boot warning
+      if (this.dataset.type === "uboot_bin") {
+        uploadHint.classList.add("visible");
+      } else {
+        uploadHint.classList.remove("visible");
+      }
     });
   });