feat(api): enhance peer session tracking and error handling

- Added `PollError` field to `peerSessionOnSpeaker` and `liveSpeakerPoll` types to capture polling errors for speakers.
- Updated `matchPeerOnSpeakers` function to handle polling errors and adjust session state reporting.
- Modified frontend components to display polling error messages alongside session states, improving user visibility into peer connection statuses.
- Enhanced API response structure to include live speaker polling information, facilitating better monitoring of speaker health.

web/src/lib/api/types.ts

@@ -156,6 +156,7 @@ export type PeerSessionOnSpeaker = {
 	speaker_id: string;
 	label: string;
 	state: string;
+	poll_error?: string;
 };
 
 export type PeerRow = {

web/src/lib/components/network/NetworkPeersCard.svelte

@@ -1,6 +1,6 @@
 <script lang="ts">
 	import { apiMutate } from '$lib/api/client.js';
-	import type { PeerRow, BgpPeerCreate, SpeakerRow } from '$lib/api/types.js';
+	import type { PeerRow, BgpPeerCreate, SpeakerRow, PeerSessionOnSpeaker } from '$lib/api/types.js';
 	import { Badge } from '$lib/ui/core/badge/index.js';
 	import { Button } from '$lib/ui/core/button/index.js';
 	import { Label } from '$lib/ui/core/label/index.js';
@@ -77,20 +77,21 @@
 		{ id: 'actions', label: '', class: 'w-20' }
 	] as const;
 
+	function peerNodeLine(s: PeerSessionOnSpeaker): string {
+		if (s.poll_error) return `${s.label}: опрос недоступен`;
+		if (s.state === 'Established') return `${s.label}: Established`;
+		if (s.state === 'absent') return `${s.label}: нет сессии`;
+		return `${s.label}: ${s.state || '—'}`;
+	}
+
 	function peerConnectedLabel(p: PeerRow): string {
+		const nodes = p.session_on_speakers ?? [];
+		if (nodes.length > 0) {
+			return nodes.map(peerNodeLine).join(' · ');
+		}
 		const established = p.established_on_speakers ?? [];
 		if (established.length > 0) {
-			const labels = established.map((s) => s.label).join(', ');
-			return established.length === 1
-				? `Подключён: ${labels}`
-				: `Подключён (${established.length} нод): ${labels}`;
-		}
-		if (p.connected_speaker_label?.trim()) {
-			return `На ноде: ${p.connected_speaker_label.trim()}`;
-		}
-		if (p.session_on_speakers && p.session_on_speakers.length > 0) {
-			const parts = p.session_on_speakers.map((s) => `${s.label} (${s.state})`);
-			return parts.join(', ');
+			return established.map((s) => `${s.label}: Established`).join(' · ');
 		}
 		return 'Не найден на опрошенных нодах';
 	}