feat(node): push USB changes and preserve sensor setup across sessions

apps/node-agent/ui/src/NodeSensors.tsx

@@ -1,5 +1,5 @@
 import {SensorWorkspace} from '../../../../packages/sensor-ui/src/SensorWorkspace';
 import type {SensorTransport} from '../../../../packages/sensor-ui/src/contracts';
 import {request} from './api';
-const transport:SensorTransport={inventory:()=>request('/api/devices'),submit:value=>request('/api/devices/operations','POST',value),operation:id=>request('/api/devices/operations/'+encodeURIComponent(id))};
+const transport:SensorTransport={subscribe:(receive,unavailable)=>{const events=new EventSource('/api/devices/events');events.onmessage=e=>{try{receive(JSON.parse(e.data));}catch{unavailable();}};events.onerror=unavailable;return()=>events.close();},inventory:()=>request('/api/devices'),submit:value=>request('/api/devices/operations','POST',value),operation:id=>request('/api/devices/operations/'+encodeURIComponent(id))};
 export function NodeSensors(){return <SensorWorkspace transport={transport}/>;}

apps/node-agent/ui/src/api.ts

@@ -28,7 +28,7 @@ export function desktopAction(action: DesktopAction): boolean {
 }
 export function desktopLogin(): boolean { return desktopAction("authorize"); }
 export async function request<T>(path: string, method = "GET", body?: unknown): Promise<T> {
-  const res = await fetch(path, { method, credentials: "same-origin", cache: "no-store", headers: body === undefined ? {} : {"Content-Type": "application/json"}, body: body === undefined ? undefined : JSON.stringify(body), signal: AbortSignal.timeout(10000) });
+  const res = await fetch(path, { method, credentials: "same-origin", cache: "no-store", headers: body === undefined ? {} : {"Content-Type": "application/json"}, body: body === undefined ? undefined : JSON.stringify(body), signal: AbortSignal.timeout(10000) }).catch(() => { throw new Error("БК не ответил вовремя. Обновите сведения; действие могло продолжиться на борту."); });
   if (!res.ok) {
     const error = await res.json().catch(() => ({}));
     throw new APIError(error.error ?? "Не удалось выполнить запрос к ноде", res.status);