Update ConnectionModal component: remove fallback text for instructions and add missing translation keys for 'instructions' in English and Russian locales.

src/components/ConnectionModal.tsx

@@ -438,7 +438,7 @@ export default function ConnectionModal({ onClose }: ConnectionModalProps) {
           </button>
           <div>
             <h2 className="font-semibold text-dark-100 text-sm">{selectedApp.name}</h2>
-            <p className="text-xs text-dark-500">{t('subscription.connection.instructions') || 'Инструкция'}</p>
+            <p className="text-xs text-dark-500">{t('subscription.connection.instructions')}</p>
           </div>
         </div>
         <button onClick={onClose} className="p-2 rounded-xl hover:bg-dark-800 text-dark-400">

src/locales/en.json

@@ -184,7 +184,8 @@
       "yourDevice": "Your device",
       "copyLink": "Copy subscription link",
       "copied": "Link copied!",
-      "openLink": "Open link"
+      "openLink": "Open link",
+      "instructions": "Instructions"
     },
     "myDevices": "My Devices",
     "noDevices": "No connected devices",

src/locales/ru.json

@@ -184,7 +184,8 @@
       "yourDevice": "Ваше устройство",
       "copyLink": "Скопировать ссылку",
       "copied": "Ссылка скопирована!",
-      "openLink": "Открыть ссылку"
+      "openLink": "Открыть ссылку",
+      "instructions": "Инструкция"
     },
     "myDevices": "Мои устройства",
     "noDevices": "Нет подключенных устройств",