Make relay opt-in when pairing devices (#2706)

* feat: make relay opt-in for device pairing

* fix(relay): keep pairing state authoritative

* fix(relay): refresh pairing state across transports

* fix(onboard): honor explicit relay opt-out

* fix(relay): surface transport startup failures

* fix(pairing): gate offers for older daemons

* test(cli): rely on real pairing transport coverage

* fix(cli): report live relay without a pid file

* fix(relay): synchronize config during daemon startup

* fix(relay): preserve mutability for ignored overrides

* fix(cli): use reachable daemon for pairing

* fix(app): redirect invalid pair device routes

* fix(pairing): support remote host device pairing

Keep Pair Device host-relative through the existing settings and daemon RPC flow. Route CLI output through an injected adapter so workflow tests do not mutate process globals.

* fix(pairing): validate pairing destinations

Expose the host-relative Pair Device flow on every supported app platform. Reject a reachable daemon whose identity does not match the requested Paseo home before reading or mutating its pairing state.

* fix(pairing): render QR codes across platforms

Generate SVG text without DOM or canvas and render it through the existing cross-platform SVG stack.

* fix(cli): pair from persisted relay state

Allow explicit relay pairing while the daemon is stopped when relay is already enabled in persisted configuration.

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

@@ -1422,9 +1422,21 @@ export const ar: TranslationResources = {
       loadingOffer: "جارٍ تحميل عرض الإقران...",
       failedToLoadOffer: "فشل تحميل عرض الاقتران.",
       relayDisabled: "لم يتم تمكين التتابع. تمكين التتابع لإقران جهاز.",
+      enableTitle: "تمكين التتابع؟",
+      enableDescription:
+        "يتيح التتابع لهذا الجهاز الاتصال من أي مكان. حركة مرور الإقران مشفرة من طرف إلى طرف.",
+      relayDocs: "كيفية عمل التتابع",
+      relayDocsAccessibility: "اقرأ كيفية عمل تتابع Paseo",
+      enableRelay: "تمكين التتابع",
+      enablingRelay: "جارٍ التمكين...",
+      notNow: "ليس الآن",
+      directConnectionHint:
+        "بدون التتابع، اتصل مباشرة عبر TCP أو Tailscale أو شبكة VPN أخرى. لن يتم إنشاء رمز QR.",
+      updateRequired: "حدّث المضيف لتمكين التتابع من Paseo Desktop.",
       unavailable: "عرض الاقتران غير متاح.",
       hint: "قم بمسح رمز QR هذا باستخدام Paseo على هاتفك، أو انسخ الرابط أدناه.",
       qrUnavailable: "رمز QR غير متاح.",
+      qrAccessibility: "رمز QR للإقران",
       retry: "أعد المحاولة",
       copy: "ينسخ",
       copied: "منقول",