feat: guest purchase cabinet credentials UI

- CabinetCredentialsState with copyable email/password fields
- Auto-login via JWT token with checkAdminStatus
- /auto-login route with ErrorBoundary and no-referrer meta
- Narrowed contact_type to 'email' | 'telegram' | null
- Disabled button styling for PendingActivation go-to-cabinet
- i18n: added landing.copy key to all 4 locales

src/locales/en.json

@@ -3960,6 +3960,7 @@
     "total": "Total",
     "pay": "Pay",
     "choosePeriod": "Choose period",
+    "copy": "Copy",
     "copied": "Copied!",
     "copyLink": "Copy link",
     "giftToggleLabel": "Purchase type",
@@ -3970,6 +3971,16 @@
     "activateNow": "Activate now",
     "activating": "Activating...",
     "activationFailed": "Activation failed",
-    "giftMessage": "Message"
+    "giftMessage": "Message",
+    "cabinetReady": "Your account is ready",
+    "cabinetEmail": "Email",
+    "cabinetPassword": "Password",
+    "goToCabinet": "Go to Cabinet",
+    "saveCredentials": "Save these login credentials",
+    "credentialsSentToEmail": "Login credentials sent to your email",
+    "giftSentSuccess": "Gift sent!",
+    "giftSentDesc": "Recipient will be notified by email",
+    "autoLoginFailed": "Auto-login failed",
+    "autoLoginProcessing": "Signing in..."
   }
 }

src/locales/fa.json

@@ -3511,6 +3511,7 @@
     "total": "مجموع",
     "pay": "پرداخت",
     "choosePeriod": "انتخاب دوره",
+    "copy": "کپی",
     "copied": "کپی شد!",
     "copyLink": "کپی لینک",
     "giftToggleLabel": "\u0646\u0648\u0639 \u062e\u0631\u06cc\u062f",
@@ -3521,6 +3522,16 @@
     "activateNow": "فعال‌سازی",
     "activating": "در حال فعال‌سازی...",
     "activationFailed": "خطا در فعال‌سازی",
-    "giftMessage": "پیام"
+    "giftMessage": "پیام",
+    "cabinetReady": "حساب شما آماده است",
+    "cabinetEmail": "ایمیل",
+    "cabinetPassword": "رمز عبور",
+    "goToCabinet": "رفتن به پنل کاربری",
+    "saveCredentials": "این اطلاعات ورود را ذخیره کنید",
+    "credentialsSentToEmail": "اطلاعات ورود به ایمیل شما ارسال شد",
+    "giftSentSuccess": "هدیه ارسال شد!",
+    "giftSentDesc": "گیرنده از طریق ایمیل مطلع خواهد شد",
+    "autoLoginFailed": "ورود خودکار ناموفق بود",
+    "autoLoginProcessing": "در حال ورود..."
   }
 }

src/locales/ru.json

@@ -4523,6 +4523,7 @@
     "total": "Итого",
     "pay": "Оплатить",
     "choosePeriod": "Выберите период",
+    "copy": "Скопировать",
     "copied": "Скопировано!",
     "copyLink": "Скопировать ссылку",
     "giftToggleLabel": "Тип покупки",
@@ -4533,6 +4534,16 @@
     "activateNow": "Активировать",
     "activating": "Активация...",
     "activationFailed": "Ошибка активации",
-    "giftMessage": "Сообщение"
+    "giftMessage": "Сообщение",
+    "cabinetReady": "Ваш аккаунт готов",
+    "cabinetEmail": "Email",
+    "cabinetPassword": "Пароль",
+    "goToCabinet": "Перейти в кабинет",
+    "saveCredentials": "Сохраните эти данные для входа",
+    "credentialsSentToEmail": "Данные для входа отправлены на email",
+    "giftSentSuccess": "Подарок отправлен!",
+    "giftSentDesc": "Получатель получит уведомление на email",
+    "autoLoginFailed": "Не удалось выполнить автоматический вход",
+    "autoLoginProcessing": "Выполняется вход..."
   }
 }

src/locales/zh.json

@@ -3510,6 +3510,7 @@
     "total": "总计",
     "pay": "支付",
     "choosePeriod": "选择时长",
+    "copy": "复制",
     "copied": "已复制！",
     "copyLink": "复制链接",
     "giftToggleLabel": "\u8d2d\u4e70\u7c7b\u578b",
@@ -3520,6 +3521,16 @@
     "activateNow": "立即激活",
     "activating": "激活中...",
     "activationFailed": "激活失败",
-    "giftMessage": "留言"
+    "giftMessage": "留言",
+    "cabinetReady": "您的账户已准备就绪",
+    "cabinetEmail": "邮箱",
+    "cabinetPassword": "密码",
+    "goToCabinet": "前往个人中心",
+    "saveCredentials": "请保存这些登录信息",
+    "credentialsSentToEmail": "登录信息已发送到您的邮箱",
+    "giftSentSuccess": "礼物已发送！",
+    "giftSentDesc": "收件人将通过邮件收到通知",
+    "autoLoginFailed": "自动登录失败",
+    "autoLoginProcessing": "正在登录..."
   }
 }