feat(ui): improve client form modal UX

- Rename tabs: "Basic" → "Basics", "Config" → "Credentials"
- Move reverseTag field from Credentials tab to Basics tab
- Move IP log button inline with limitIp field (tooltip button, edit mode only)
- Hide random email button when editing an existing client
- Add tooltips to totalGB and limitIp fields with descriptive hints
- Rename labels: "Total Sent/Received (GB)" → "Traffic Limit (GB)", "Duration" → "Duration (days)"
- Add renewDays translation key for auto-renew label with unit hint
- Remove redundant filterOption and width style from AutoComplete group selectors
- Update all 15 locale files with new and renamed translation keys

internal/web/translation/es-ES.json

@@ -637,8 +637,8 @@
       }
     },
     "clients": {
-      "tabBasic": "Básico",
-      "tabConfig": "Configuración",
+      "tabBasics": "Básico",
+      "tabCredentials": "Credenciales",
       "add": "Añadir cliente",
       "edit": "Editar cliente",
       "submitAdd": "Añadir cliente",
@@ -666,10 +666,11 @@
       "prefix": "Prefijo",
       "postfix": "Sufijo",
       "delayedStart": "Iniciar tras el primer uso",
-      "expireDays": "Duración",
+      "expireDays": "Duración (días)",
       "days": "Día(s)",
       "renew": "Renovación automática",
       "renewDesc": "Renovación automática tras la expiración. (0 = desactivado) (unidad: día)",
+      "renewDays": "Renovación automática (días)",
       "searchPlaceholder": "Buscar email, comentario, sub ID, UUID, contraseña, auth…",
       "filterTitle": "Filtrar clientes",
       "clearAllFilters": "Limpiar todo",
@@ -691,10 +692,12 @@
       "hasNot": "No tiene",
       "title": "Clientes",
       "actions": "Acciones",
-      "totalGB": "Total enviado/recibido (GB)",
+      "totalGB": "Límite de tráfico (GB)",
+      "totalGBDesc": "Cuota de datos para este cliente. 0 = ilimitado.",
       "expiryTime": "Expiración",
       "addClients": "Añadir clientes",
       "limitIp": "Límite de IP",
+      "limitIpDesc": "Máximo de IP simultáneas. 0 = ilimitado.",
       "password": "Contraseña",
       "subId": "ID de suscripción",
       "online": "En línea",
@@ -1733,4 +1736,4 @@
       "chooseInbound": "Elige un Inbound"
     }
   }
-}
+}