Stop browser autofill stuffing login username into transfer amount fields.

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

lib/common/static/options_panel.js

@@ -285,22 +285,34 @@
   }
 
   function hardenOrderAutofill() {
-    const note = document.getElementById("opt-signal-note");
-    if (!note) return;
-    function wipeNote() {
-      if (/^[a-z][a-z0-9._-]{1,31}$/i.test(String(note.value || "").trim())) {
-        note.value = "";
-      }
+    function looksLikeUsername(v) {
+      return /^[a-z][a-z0-9._-]{1,31}$/i.test(String(v || "").trim());
     }
-    wipeNote();
-    note.addEventListener("focus", function () {
-      note.removeAttribute("readonly");
+    function harden(el) {
+      if (!el) return;
+      function wipe() {
+        if (looksLikeUsername(el.value)) el.value = "";
+      }
+      wipe();
+      el.addEventListener("focus", function () {
+        el.removeAttribute("readonly");
+      });
+      el.addEventListener("blur", function () {
+        if (!el.value) el.setAttribute("readonly", "readonly");
+      });
+      setTimeout(wipe, 200);
+      setTimeout(wipe, 800);
+      setTimeout(wipe, 2000);
+    }
+    const note = document.getElementById("opt-signal-note");
+    harden(note);
+    [
+      "opt-sheets-amount",
+      "opt-eth-amount",
+      "opt-target-idx",
+    ].forEach(function (id) {
+      harden(document.getElementById(id));
     });
-    note.addEventListener("blur", function () {
-      if (!note.value) note.setAttribute("readonly", "readonly");
-    });
-    setTimeout(wipeNote, 200);
-    setTimeout(wipeNote, 800);
   }
 
   function quoteUrl(instId) {