Make remote daemon update failures actionable (#2120)

* fix(settings): show daemon update failures

React Native web ignores Alert.alert, so failed remote updates reset to an enabled button without any user-visible explanation. Keep updater progress and failure as explicit rendered state, including the daemon's error, and cover the real browser-to-daemon failure path.

* test(settings): harden daemon update regression

* fix(settings): disable Desktop-managed daemon updates

Desktop-bundled daemons advertised npm self-update even though the install-origin checks always rejected it. Report Desktop ownership to clients, render actionable guidance, and refuse stale requests before touching npm.

packages/app/src/i18n/resources/ja.ts

@@ -1880,6 +1880,8 @@ export const ja: TranslationResources = {
           dialogFailedMessage: "再起動確認ダイアログを開けませんでした。",
         },
         update: {
+          desktopManagedHint:
+            "このデーモンはPaseo Desktopによって管理されています。ホスト上のPaseo Desktopを更新してください。",
           title: "デーモンを更新",
           hint: "デーモンを最新バージョンに更新して再起動します",
           confirm: "更新",