web: the command palette finds notes written since it was first opened

The palette's note list loaded once per session behind a `loaded` flag, and
the `reload()` that would have cleared it had no caller. So a note written
after the first open couldn't be found by name until the page reloaded
(#5165, audit B4). The list is now fetched again on every open, and the last
list stays visible meanwhile. The input takes focus before the fetch, and a
failed fetch keeps the old list instead of breaking the palette.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

frontend/src/components/CommandPalette.vue

@@ -87,9 +87,12 @@ function onKeydown(e: KeyboardEvent) {
 }
 
 onMounted(async () => {
-  await titles.load();
+  // Focus first: typing a command must not wait on the note list.
   await nextTick();
   input.value?.focus();
+  // A failed refresh keeps the last list rather than breaking the palette; the
+  // commands work either way.
+  titles.refresh().catch(() => {});
 });
 </script>