feat: add locales for user search in promo offer sending

- Add searchUserPlaceholder, noUsersFound, hasSubscription keys
- Support all 4 languages: en, ru, zh, fa
- Remove fallback strings from component

src/locales/en.json

@@ -1817,6 +1817,9 @@
         "segment": "Segment",
         "user": "User",
         "userIdPlaceholder": "Telegram ID or User ID",
+        "searchUserPlaceholder": "Search by name, username or Telegram ID...",
+        "noUsersFound": "No users found",
+        "hasSubscription": "Sub",
         "preview": "Preview",
         "sending": "Sending...",
         "sendButton": "Send"

src/locales/fa.json

@@ -1610,6 +1610,9 @@
         "segment": "بخش",
         "user": "کاربر",
         "userIdPlaceholder": "شناسه تلگرام یا شناسه کاربر",
+        "searchUserPlaceholder": "جستجو بر اساس نام، نام کاربری یا شناسه تلگرام...",
+        "noUsersFound": "کاربری یافت نشد",
+        "hasSubscription": "اشتراک",
         "preview": "پیش‌نمایش",
         "sending": "در حال ارسال...",
         "sendButton": "ارسال"

src/locales/ru.json

@@ -2328,6 +2328,9 @@
         "segment": "Сегмент",
         "user": "Пользователь",
         "userIdPlaceholder": "Telegram ID или User ID",
+        "searchUserPlaceholder": "Поиск по имени, username или Telegram ID...",
+        "noUsersFound": "Пользователи не найдены",
+        "hasSubscription": "Подп",
         "preview": "Предпросмотр",
         "sending": "Отправка...",
         "sendButton": "Отправить"

src/locales/zh.json

@@ -1609,6 +1609,9 @@
         "segment": "分组",
         "user": "用户",
         "userIdPlaceholder": "Telegram ID 或 User ID",
+        "searchUserPlaceholder": "按姓名、用户名或Telegram ID搜索...",
+        "noUsersFound": "未找到用户",
+        "hasSubscription": "订阅",
         "preview": "预览",
         "sending": "发送中...",
         "sendButton": "发送"

src/pages/AdminPromoOfferSend.tsx

@@ -427,10 +427,7 @@ export default function AdminPromoOfferSend() {
                           setShowDropdown(true);
                         }}
                         onFocus={() => setShowDropdown(true)}
-                        placeholder={t(
+                        placeholder={t('admin.promoOffers.send.searchUserPlaceholder')}
-                          'admin.promoOffers.send.searchUserPlaceholder',
-                          'Search by name, username or Telegram ID...',
-                        )}
                         className="w-full rounded-lg border border-dark-600 bg-dark-700 py-2.5 pl-10 pr-3 text-dark-100 focus:border-accent-500 focus:outline-none"
                       />
                       {isSearching && (
@@ -464,14 +461,14 @@ export default function AdminPromoOfferSend() {
                               </div>
                               {user.has_subscription && (
                                 <span className="flex-shrink-0 rounded bg-success-500/20 px-1.5 py-0.5 text-xs text-success-400">
-                                  {t('admin.users.hasSubscription', 'Sub')}
+                                  {t('admin.promoOffers.send.hasSubscription')}
                                 </span>
                               )}
                             </button>
                           ))
                         ) : !isSearching ? (
                           <div className="px-3 py-4 text-center text-sm text-dark-400">
-                            {t('admin.promoOffers.send.noUsersFound', 'No users found')}
+                            {t('admin.promoOffers.send.noUsersFound')}
                           </div>
                         ) : null}
                       </div>