feat(mobile): redesign connect screen and instances sheet

- Connect screen leads with Scan QR code plus a plain-words hint of where the
  code lives; manual URL entry is collapsed behind Connect by address (expanded
  automatically on web where scanning is unavailable); saved connections show a
  per-row connecting spinner
- Instances sheet is list-first: the active instance shows a live status dot
  and transport (Connected - Local network / Private relay), rows connect on
  tap with an inline spinner, and the add/edit form hides behind Scan QR code /
  Add by address
- Deleting the last instance returns to the connect screen: without a runtime
  endpoint the native app no longer bootstraps against the webview's own origin
  (which faked a successful connection), and the connect screen renders
  regardless of a stale isConnected flag

packages/ui/src/lib/i18n/messages/es.ts

@@ -52,7 +52,9 @@ export const dict: Record<I18nKey, string> = {
   "mobile.connect.cancelPassword": "Usar otro servidor",
   "mobile.connect.connecting": "Conectando...",
   "mobile.connect.scanQr": "Escanear código QR",
+  "mobile.connect.welcome.scanHint": "En tu ordenador, abre «Añadir un dispositivo» para mostrar un código QR y escanéalo aquí.",
   "mobile.connect.advanced": "Avanzado",
+  "mobile.connect.manual.toggle": "Conectar por dirección",
   "mobile.connect.scan.permissionDenied": "El acceso a la cámara está desactivado. Actívalo en Ajustes para escanear un código QR.",
   "mobile.connect.scan.failed": "No se pudo escanear ese código QR. Inténtalo de nuevo o introduce la URL manualmente.",
   "mobile.connect.scan.invalid": "Ese código QR no es un código de conexión de OpenChamber.",
@@ -66,6 +68,7 @@ export const dict: Record<I18nKey, string> = {
   "mobile.connect.error.authRequired": "Este servidor requiere una contraseña o un token de cliente.",
   "mobile.connect.error.passwordFailed": "No se pudo desbloquear ese servidor. Revisa la contraseña.",
   "mobile.instances.addTitle": "Agregar instancia",
+  "mobile.instances.addManual": "Añadir por dirección",
   "mobile.instances.editTitle": "Editar instancia",
   "mobile.instances.edit": "Editar",
   "mobile.instances.delete": "Eliminar",
@@ -76,6 +79,8 @@ export const dict: Record<I18nKey, string> = {
   "mobile.instances.label.label": "Nombre",
   "mobile.instances.label.placeholder": "Nombre para mostrar (opcional)",
   "mobile.instances.saveNew": "Guardar instancia",
+  "mobile.instances.status.connectedDirect": "Conectado · Red local",
+  "mobile.instances.status.connectedRelay": "Conectado · Relay privado",
   "mobile.instances.saveEdit": "Guardar cambios",
   "mobile.nav.changes": "Cambios",
   "mobile.nav.settings": "Ajustes",