Stop browser autofill stuffing login username into transfer amount fields.

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

lib/common/static/options_settings.js

@@ -342,4 +342,47 @@
       }
     });
   }
+
+  function hardenAmountAutofill(ids) {
+    ids.forEach(function (id) {
+      const el = document.getElementById(id);
+      if (!el) return;
+      function wipe() {
+        const v = String(el.value || "").trim();
+        if (/^[a-z][a-z0-9._-]{1,31}$/i.test(v)) el.value = "";
+      }
+      wipe();
+      el.setAttribute("readonly", "readonly");
+      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);
+    });
+  }
+
+  // 全部划转/兑换前去掉 readonly,避免写不进数量
+  ["opt-set-swap-all-btn", "opt-set-int-all-btn", "opt-set-cross-all-btn"].forEach(function (btnId) {
+    const btn = document.getElementById(btnId);
+    if (!btn) return;
+    btn.addEventListener(
+      "click",
+      function () {
+        const map = {
+          "opt-set-swap-all-btn": "opt-set-swap-amount",
+          "opt-set-int-all-btn": "opt-set-int-amount",
+          "opt-set-cross-all-btn": "opt-set-cross-amount",
+        };
+        const input = document.getElementById(map[btnId]);
+        if (input) input.removeAttribute("readonly");
+      },
+      true
+    );
+  });
+
+  hardenAmountAutofill(["opt-set-swap-amount", "opt-set-int-amount", "opt-set-cross-amount"]);
 })();