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/pt-BR.ts

@@ -1451,9 +1451,21 @@ export const ptBR: TranslationResources = {
       loadingOffer: "Carregando oferta de pareamento...",
       failedToLoadOffer: "Falha ao carregar oferta de pareamento.",
       relayDisabled: "Relay não está ativado. Ative o relay para parear um dispositivo.",
+      enableTitle: "Ativar o relay?",
+      enableDescription:
+        "O relay permite conectar este dispositivo de qualquer lugar. O tráfego de pareamento é criptografado de ponta a ponta.",
+      relayDocs: "Como o relay funciona",
+      relayDocsAccessibility: "Leia como o relay do Paseo funciona",
+      enableRelay: "Ativar relay",
+      enablingRelay: "Ativando...",
+      notNow: "Agora não",
+      directConnectionHint:
+        "Sem relay, conecte diretamente por TCP, Tailscale ou outra VPN. Nenhum código QR é criado.",
+      updateRequired: "Atualize o host para ativar o relay pelo Paseo Desktop.",
       unavailable: "Oferta de pareamento indisponível.",
       hint: "Escaneie este QR code com o Paseo no seu celular ou copie o link abaixo.",
       qrUnavailable: "QR code indisponível.",
+      qrAccessibility: "Código QR de pareamento",
       retry: "Tentar novamente",
       copy: "Copiar",
       copied: "Copiado",