feat(sub): per-client external links and remote subscriptions

Add a Links tab to the client form for attaching third-party share
links and remote subscription URLs per client. They are merged into
the client's raw/JSON/Clash subscription output: links are emitted
verbatim and parsed for JSON/Clash; subscription URLs are fetched
(cached, with a short timeout) and their configs merged in.

i18n keys added across all 13 locales.

internal/web/translation/ar-EG.json

@@ -647,6 +647,12 @@
     "clients": {
       "tabBasics": "أساسي",
       "tabCredentials": "بيانات الاعتماد",
+      "tabLinks": "الروابط",
+      "linksHint": "أضف روابط مشاركة من جهات خارجية وعناوين اشتراك خارجية لتضمينها في اشتراك هذا العميل.",
+      "addExternalLink": "إضافة رابط خارجي",
+      "addExternalSubscription": "إضافة اشتراك خارجي",
+      "noExternalLinks": "لا توجد روابط خارجية بعد.",
+      "noExternalSubscriptions": "لا توجد اشتراكات خارجية بعد.",
       "add": "إضافة عميل",
       "edit": "تعديل العميل",
       "submitAdd": "إضافة عميل",

internal/web/translation/en-US.json

@@ -648,6 +648,12 @@
     "clients": {
       "tabBasics": "Basics",
       "tabCredentials": "Credentials",
+      "tabLinks": "Links",
+      "linksHint": "Add third-party share links and remote subscription URLs to include in this client's subscription.",
+      "addExternalLink": "Add External Link",
+      "addExternalSubscription": "Add External Subscription",
+      "noExternalLinks": "No external links yet.",
+      "noExternalSubscriptions": "No external subscriptions yet.",
       "add": "Add Client",
       "edit": "Edit Client",
       "submitAdd": "Add Client",
@@ -1765,4 +1771,4 @@
       "chooseInbound": "Choose an Inbound"
     }
   }
-}
+}

internal/web/translation/es-ES.json

@@ -647,6 +647,12 @@
     "clients": {
       "tabBasics": "Básico",
       "tabCredentials": "Credenciales",
+      "tabLinks": "Enlaces",
+      "linksHint": "Añade enlaces de terceros y URLs de suscripción remotas para incluirlos en la suscripción de este cliente.",
+      "addExternalLink": "Añadir enlace externo",
+      "addExternalSubscription": "Añadir suscripción externa",
+      "noExternalLinks": "Aún no hay enlaces externos.",
+      "noExternalSubscriptions": "Aún no hay suscripciones externas.",
       "add": "Añadir cliente",
       "edit": "Editar cliente",
       "submitAdd": "Añadir cliente",

internal/web/translation/fa-IR.json

@@ -647,6 +647,12 @@
     "clients": {
       "tabBasics": "پایه",
       "tabCredentials": "اطلاعات اتصال",
+      "tabLinks": "لینک‌ها",
+      "linksHint": "لینک‌های اشتراک شخص‌ثالث و آدرس سابسکریپشن‌های خارجی را اضافه کنید تا در سابسکریپشن این کاربر قرار گیرند.",
+      "addExternalLink": "افزودن لینک خارجی",
+      "addExternalSubscription": "افزودن سابسکریپشن خارجی",
+      "noExternalLinks": "هنوز لینک خارجی‌ای اضافه نشده.",
+      "noExternalSubscriptions": "هنوز سابسکریپشن خارجی‌ای اضافه نشده.",
       "add": "افزودن کلاینت",
       "edit": "ویرایش کلاینت",
       "submitAdd": "افزودن کلاینت",
@@ -1764,4 +1770,4 @@
       "chooseInbound": "یک ورودی انتخاب کنید"
     }
   }
-}
+}

internal/web/translation/id-ID.json

@@ -647,6 +647,12 @@
     "clients": {
       "tabBasics": "Dasar",
       "tabCredentials": "Kredensial",
+      "tabLinks": "Tautan",
+      "linksHint": "Tambahkan tautan berbagi pihak ketiga dan URL langganan jarak jauh untuk disertakan dalam langganan klien ini.",
+      "addExternalLink": "Tambah Tautan Eksternal",
+      "addExternalSubscription": "Tambah Langganan Eksternal",
+      "noExternalLinks": "Belum ada tautan eksternal.",
+      "noExternalSubscriptions": "Belum ada langganan eksternal.",
       "add": "Tambah klien",
       "edit": "Ubah klien",
       "submitAdd": "Tambah klien",

internal/web/translation/ja-JP.json

@@ -647,6 +647,12 @@
     "clients": {
       "tabBasics": "基本",
       "tabCredentials": "認証情報",
+      "tabLinks": "リンク",
+      "linksHint": "サードパーティの共有リンクやリモートのサブスクリプションURLを追加して、このクライアントのサブスクリプションに含めます。",
+      "addExternalLink": "外部リンクを追加",
+      "addExternalSubscription": "外部サブスクリプションを追加",
+      "noExternalLinks": "外部リンクはまだありません。",
+      "noExternalSubscriptions": "外部サブスクリプションはまだありません。",
       "add": "クライアントを追加",
       "edit": "クライアントを編集",
       "submitAdd": "クライアントを追加",

internal/web/translation/pt-BR.json

@@ -647,6 +647,12 @@
     "clients": {
       "tabBasics": "Básico",
       "tabCredentials": "Credenciais",
+      "tabLinks": "Links",
+      "linksHint": "Adicione links de terceiros e URLs de assinatura remotas para incluir na assinatura deste cliente.",
+      "addExternalLink": "Adicionar link externo",
+      "addExternalSubscription": "Adicionar assinatura externa",
+      "noExternalLinks": "Ainda não há links externos.",
+      "noExternalSubscriptions": "Ainda não há assinaturas externas.",
       "add": "Adicionar cliente",
       "edit": "Editar cliente",
       "submitAdd": "Adicionar cliente",

internal/web/translation/ru-RU.json

@@ -647,6 +647,12 @@
     "clients": {
       "tabBasics": "Основные",
       "tabCredentials": "Учетные данные",
+      "tabLinks": "Ссылки",
+      "linksHint": "Добавьте сторонние ссылки и URL удалённых подписок, чтобы включить их в подписку этого клиента.",
+      "addExternalLink": "Добавить внешнюю ссылку",
+      "addExternalSubscription": "Добавить внешнюю подписку",
+      "noExternalLinks": "Пока нет внешних ссылок.",
+      "noExternalSubscriptions": "Пока нет внешних подписок.",
       "add": "Добавить клиента",
       "edit": "Изменить клиента",
       "submitAdd": "Добавить клиента",

internal/web/translation/tr-TR.json

@@ -648,6 +648,12 @@
     "clients": {
       "tabBasics": "Temel",
       "tabCredentials": "Kimlik Bilgileri",
+      "tabLinks": "Bağlantılar",
+      "linksHint": "Bu istemcinin aboneliğine dahil etmek için üçüncü taraf paylaşım bağlantıları ve uzak abonelik URL'leri ekleyin.",
+      "addExternalLink": "Harici Bağlantı Ekle",
+      "addExternalSubscription": "Harici Abonelik Ekle",
+      "noExternalLinks": "Henüz harici bağlantı yok.",
+      "noExternalSubscriptions": "Henüz harici abonelik yok.",
       "add": "Kullanıcı Ekle",
       "edit": "Kullanıcıyı Düzenle",
       "submitAdd": "Kullanıcı Ekle",

internal/web/translation/uk-UA.json

@@ -647,6 +647,12 @@
     "clients": {
       "tabBasics": "Основні",
       "tabCredentials": "Облікові дані",
+      "tabLinks": "Посилання",
+      "linksHint": "Додайте сторонні посилання та URL віддалених підписок, щоб включити їх до підписки цього клієнта.",
+      "addExternalLink": "Додати зовнішнє посилання",
+      "addExternalSubscription": "Додати зовнішню підписку",
+      "noExternalLinks": "Зовнішніх посилань ще немає.",
+      "noExternalSubscriptions": "Зовнішніх підписок ще немає.",
       "add": "Додати клієнта",
       "edit": "Редагувати клієнта",
       "submitAdd": "Додати клієнта",

internal/web/translation/vi-VN.json

@@ -647,6 +647,12 @@
     "clients": {
       "tabBasics": "Cơ bản",
       "tabCredentials": "Thông tin xác thực",
+      "tabLinks": "Liên kết",
+      "linksHint": "Thêm liên kết chia sẻ của bên thứ ba và URL đăng ký từ xa để đưa vào đăng ký của khách hàng này.",
+      "addExternalLink": "Thêm liên kết ngoài",
+      "addExternalSubscription": "Thêm đăng ký ngoài",
+      "noExternalLinks": "Chưa có liên kết ngoài.",
+      "noExternalSubscriptions": "Chưa có đăng ký ngoài.",
       "add": "Thêm khách hàng",
       "edit": "Chỉnh sửa khách hàng",
       "submitAdd": "Thêm khách hàng",

internal/web/translation/zh-CN.json

@@ -647,6 +647,12 @@
     "clients": {
       "tabBasics": "基本",
       "tabCredentials": "凭据",
+      "tabLinks": "链接",
+      "linksHint": "添加第三方分享链接和远程订阅地址，将其包含在该客户端的订阅中。",
+      "addExternalLink": "添加外部链接",
+      "addExternalSubscription": "添加外部订阅",
+      "noExternalLinks": "暂无外部链接。",
+      "noExternalSubscriptions": "暂无外部订阅。",
       "add": "添加客户端",
       "edit": "编辑客户端",
       "submitAdd": "添加客户端",

internal/web/translation/zh-TW.json

@@ -647,6 +647,12 @@
     "clients": {
       "tabBasics": "基本",
       "tabCredentials": "認證資訊",
+      "tabLinks": "連結",
+      "linksHint": "新增第三方分享連結和遠端訂閱網址，將其包含在此用戶端的訂閱中。",
+      "addExternalLink": "新增外部連結",
+      "addExternalSubscription": "新增外部訂閱",
+      "noExternalLinks": "尚無外部連結。",
+      "noExternalSubscriptions": "尚無外部訂閱。",
       "add": "新增客戶端",
       "edit": "編輯客戶端",
       "submitAdd": "新增客戶端",