feat(sub): redesign the subscription page around usage, tabs and app imports

The info page was a long key/value table followed by every link and two
app dropdowns, and it rendered left-to-right even for Persian and Arabic.
It now leads with a usage ring, the remaining quota and a stats grid, and
splits the rest into Subscription / Apps / Configs tabs.

- Status tells expired, data-used-up and disabled apart instead of one
  "Inactive", replacing the hard-coded English expiry chip.
- The Apps tab keeps every Android and iOS app with its existing deep
  link, preselects the visitor's platform and adds Windows: Hiddify and
  Clash Verge Rev import directly, v2rayN copies the link.
- fa-IR and ar-EG render right-to-left; URLs, IDs and sizes stay LTR.
- The footer shows the support link and the client refresh interval, so
  subPageContext now carries subUpdates (also in ?format=info).
- Status, days-left and app deep-link logic lives in subPageModel.ts,
  with unit tests pinning the deep links the page already shipped.

internal/web/translation/pt-BR.json

@@ -80,7 +80,6 @@
   "somethingWentWrong": "Algo deu errado",
   "subscription": {
     "title": "Informações da assinatura",
-    "subId": "ID da assinatura",
     "status": "Status",
     "downloaded": "Baixado",
     "uploaded": "Enviado",
@@ -93,7 +92,20 @@
     "noExpiry": "Sem validade",
     "copyAllConfigs": "Copiar Todas as Configurações",
     "copyAllConfigsCopied": "Todas as configurações copiadas",
-    "email": "Email"
+    "daysLeft": "Dias restantes",
+    "expired": "Expirada",
+    "depleted": "Dados esgotados",
+    "ofTotal": "de {total}",
+    "tabLinks": "Assinatura",
+    "tabApps": "Aplicativos",
+    "tabConfigs": "Configurações",
+    "scanTitle": "Escaneie com o celular",
+    "scanHint": "Escaneie este código no seu aplicativo de VPN para adicionar a assinatura sem copiar o link.",
+    "updateInterval": "Atualiza automaticamente a cada {hours} horas",
+    "support": "Suporte",
+    "qrTitle": "Escaneie. Importe. Conecte.",
+    "qrHint": "Escaneie com seu aplicativo cliente. Mantenha este código em sigilo.",
+    "saveQr": "Salvar QR"
   },
   "menu": {
     "theme": "Tema",