feat(pia): add PIA login-and-add WireGuard outbounds (#6272)

* feat(pia): add login-and-add WireGuard outbounds (#2)

* fix(pia): keep PIA outbounds identifiable after the editor strips hostname

The outbound editor drops piaHostname, so last-segment matching failed for hyphenated servers. Identify rows by the computed tag, re-encrypt stored tokens onto the active key, skip unusable catalog rows, and always release the catalog refresh latch.

internal/web/translation/es-ES.json

@@ -1642,6 +1642,20 @@
         "toastDeleted": "Eliminada",
         "toastDeleteFailed": "Error al eliminar"
       },
+      "pia": {
+        "menu": "PIA",
+        "username": "Usuario de PIA",
+        "password": "Contraseña de PIA",
+        "account": "Cuenta",
+        "region": "Región",
+        "allRegions": "Todas las regiones",
+        "noServers": "No hay servidores para el país seleccionado",
+        "outboundAdded": "Salida PIA añadida",
+        "outboundUpdated": "Salida PIA actualizada",
+        "addedServers": "Servidores añadidos",
+        "alreadyAdded": "Este servidor ya está en la lista de salidas. Usa {reset} para renovar la clave.",
+        "provisionFailed": "No se pudo crear la salida PIA. Inténtalo de nuevo."
+      },
       "tabBalancerSettings": "Ajustes del balanceador",
       "tabObservatory": "Observatorio",
       "observatory": {