feat(i18n): migrate all hardcoded Russian text to i18n

- Replace all hardcoded Russian strings with t() calls across 30+ files
- Add ~500 new translation keys to all 4 locales (ru, en, zh, fa)
- Convert module-level config objects to labelKey pattern
- Remove Russian fallbacks from t() calls (fallbackLng handles it)
- Replace DeepLinkRedirect custom i18n with standard t() calls
- Fix subscription.servers key collision (string vs object)

src/components/blocking/ChannelSubscriptionScreen.tsx

@@ -56,10 +56,10 @@ export default function ChannelSubscriptionScreen() {
         error.response?.status === 403 &&
         error.response?.data?.detail?.code === 'channel_subscription_required'
       ) {
-        setError(t('blocking.channel.notSubscribed', 'Вы ещё не подписались на канал'));
+        setError(t('blocking.channel.notSubscribed'));
       } else {
         // Other error - might be network issue
-        setError(t('blocking.channel.checkError', 'Ошибка проверки. Попробуйте позже.'));
+        setError(t('blocking.channel.checkError'));
       }
     } finally {
       setIsChecking(false);
@@ -80,14 +80,11 @@ export default function ChannelSubscriptionScreen() {
         </div>
 
         {/* Title */}
-        <h1 className="mb-4 text-2xl font-bold text-white">
-          {t('blocking.channel.title', 'Подписка на канал')}
-        </h1>
+        <h1 className="mb-4 text-2xl font-bold text-white">{t('blocking.channel.title')}</h1>
 
         {/* Message */}
         <p className="mb-8 text-lg text-gray-400">
-          {channelInfo?.message ||
-            t('blocking.channel.defaultMessage', 'Для продолжения работы подпишитесь на наш канал')}
+          {channelInfo?.message || t('blocking.channel.defaultMessage')}
         </p>
 
         {/* Error message */}
@@ -108,7 +105,7 @@ export default function ChannelSubscriptionScreen() {
             <svg className="h-5 w-5" fill="currentColor" viewBox="0 0 24 24">
               <path d="M11.944 0A12 12 0 0 0 0 12a12 12 0 0 0 12 12 12 12 0 0 0 12-12A12 12 0 0 0 12 0a12 12 0 0 0-.056 0zm4.962 7.224c.1-.002.321.023.465.14a.506.506 0 0 1 .171.325c.016.093.036.306.02.472-.18 1.898-.962 6.502-1.36 8.627-.168.9-.499 1.201-.82 1.23-.696.065-1.225-.46-1.9-.902-1.056-.693-1.653-1.124-2.678-1.8-1.185-.78-.417-1.21.258-1.91.177-.184 3.247-2.977 3.307-3.23.007-.032.014-.15-.056-.212s-.174-.041-.249-.024c-.106.024-1.793 1.14-5.061 3.345-.48.33-.913.49-1.302.48-.428-.008-1.252-.241-1.865-.44-.752-.245-1.349-.374-1.297-.789.027-.216.325-.437.893-.663 3.498-1.524 5.83-2.529 6.998-3.014 3.332-1.386 4.025-1.627 4.476-1.635z" />
             </svg>
-            {t('blocking.channel.openChannel', 'Открыть канал')}
+            {t('blocking.channel.openChannel')}
           </button>
 
           {/* Check subscription button */}
@@ -139,7 +136,7 @@ export default function ChannelSubscriptionScreen() {
                     d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"
                   ></path>
                 </svg>
-                {t('blocking.channel.checking', 'Проверяем...')}
+                {t('blocking.channel.checking')}
               </>
             ) : cooldown > 0 ? (
               <>
@@ -156,7 +153,7 @@ export default function ChannelSubscriptionScreen() {
                     d="M12 8v4l3 3m6-3a9 9 0 11-18 0 9 9 0 0118 0z"
                   />
                 </svg>
-                {t('blocking.channel.waitSeconds', 'Подождите {{seconds}} сек.', {
+                {t('blocking.channel.waitSeconds', {
                   seconds: cooldown,
                 })}
               </>
@@ -170,16 +167,14 @@ export default function ChannelSubscriptionScreen() {
                     d="M5 13l4 4L19 7"
                   />
                 </svg>
-                {t('blocking.channel.checkSubscription', 'Проверить подписку')}
+                {t('blocking.channel.checkSubscription')}
               </>
             )}
           </button>
         </div>
 
         {/* Hint */}
-        <p className="mt-6 text-sm text-gray-500">
-          {t('blocking.channel.hint', 'После подписки нажмите кнопку проверки')}
-        </p>
+        <p className="mt-6 text-sm text-gray-500">{t('blocking.channel.hint')}</p>
       </div>
     </div>
   );