kin: KIN-UI-007 Scroll to bottom при получении новых сообщений через polling

web/frontend/src/views/ChatView.vue

@@ -12,6 +12,7 @@ const input = ref('')
 const sending = ref(false)
 const loading = ref(true)
 const error = ref('')
+const consecutiveErrors = ref(0)
 const projectName = ref('')
 const messagesEl = ref<HTMLElement | null>(null)
 
@@ -37,8 +38,17 @@ function checkAndPoll() {
     try {
       const updated = await api.chatHistory(props.projectId)
       messages.value = updated
+      consecutiveErrors.value = 0
+      error.value = ''
       if (!hasRunningTasks(updated)) stopPoll()
-    } catch {}
+    } catch (e: any) {
+      consecutiveErrors.value++
+      console.warn(`[polling] ошибка #${consecutiveErrors.value}:`, e)
+      if (consecutiveErrors.value >= 3) {
+        error.value = 'Сервер недоступен. Проверьте подключение.'
+        stopPoll()
+      }
+    }
   }, 3000)
 }
 
@@ -46,6 +56,7 @@ async function load() {
   stopPoll()
   loading.value = true
   error.value = ''
+  consecutiveErrors.value = 0
   try {
     const [msgs, project] = await Promise.all([
       api.chatHistory(props.projectId),