fix: re-enable Confirm Delete after a delete, so a second one needs no reopen (closes #335)

The password route disabled its Confirm Delete button before the decrypt
and never re-enabled it on success, so a second delete in the same popup
session found a dead button until the popup was closed and reopened. The
lost-password route re-enabled its own button in its leave hook, so the
two screens on the one screen behaved differently.

Both routes now reset the button through the shared finishDelete(), the
one path they both take, and the lost-password leave hook no longer
handles it separately. Tests drive a password-route delete and a second
delete in the same session; they fail against the prior head, where the
button stays disabled after the first delete.

Model: opus-4-8

src/popup/views/deleteWallet.js

@@ -51,16 +51,12 @@ function clear() {
 // The lost-password screen holds no secret — a wallet name is not one —
 // but it is wiped on leave for the neighbouring reason: a typed
 // confirmation left standing in a hidden view is one click away from
-// destroying a wallet the user has since navigated off. The button is
-// re-enabled here too, so a screen left mid-delete is usable on re-entry.
+// destroying a wallet the user has since navigated off.
 function clearLostPassword() {
     lostPasswordIndex = null;
     $("delete-wallet-lost-name-input").value = "";
     $("delete-wallet-lost-flash").textContent = "";
     $("delete-wallet-lost-flash").style.visibility = "hidden";
-    const btn = $("btn-delete-wallet-lost-confirm");
-    btn.disabled = false;
-    btn.classList.remove("text-muted");
 }
 
 function show(walletIdx) {
@@ -98,6 +94,17 @@ function showLostPassword() {
 // cleanup and the accountsChanged broadcast cannot drift apart between
 // them.
 async function finishDelete(walletIdx) {
+    // Each route's confirm button was disabled by its own click handler
+    // before the delete ran. Re-enable both here, on the one path they
+    // share, so the two routes reset the same way and a second delete in
+    // the same popup session finds a live button instead of a dead one.
+    const passwordBtn = $("btn-delete-wallet-confirm");
+    passwordBtn.disabled = false;
+    passwordBtn.classList.remove("text-muted");
+    const lostPasswordBtn = $("btn-delete-wallet-lost-confirm");
+    lostPasswordBtn.disabled = false;
+    lostPasswordBtn.classList.remove("text-muted");
+
     const { activeAddressChanged } = removeWalletFromState(state, walletIdx);
 
     deleteWalletIndex = null;
@@ -187,8 +194,8 @@ function init(_ctx) {
         btn.disabled = true;
         btn.classList.add("text-muted");
 
-        // finishDelete() navigates, and the leave hook re-enables the
-        // button and wipes the typed name on the way out.
+        // finishDelete() re-enables the button; navigating away then runs
+        // the leave hook that wipes the typed name.
         await finishDelete(lostPasswordIndex);
     });