feat(node): package Ubuntu desktop setup and trusted access

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

@@ -0,0 +1,28 @@
+import { useCallback, useEffect, useState } from "react";
+import { type ToastItem } from "@nodedc/ui-react";
+import { APIError, loginFromLaunch, request, type Status } from "./api";
+
+export function useNode() {
+  const [value, setValue] = useState<Status | null>(null);
+  const [pending, setPending] = useState(true);
+  const [locked, setLocked] = useState(false);
+  const [toasts, setToasts] = useState<ToastItem[]>([]);
+  const failure = useCallback((error: unknown) => {
+    if (error instanceof APIError && error.status === 401) { setValue(null); setLocked(true); }
+    setToasts([{ id: "request", tone: "error", title: error instanceof Error ? error.message : "Нода недоступна", durationMs: null }]);
+  }, []);
+  const refresh = useCallback(async () => {
+    setPending(true);
+    try { const result = await request<Status>("/api/status"); setValue(result); setLocked(false); setToasts([]); }
+    catch (error) { failure(error); }
+    finally { setPending(false); }
+  }, [failure]);
+  useEffect(() => {
+    const launch = () => { void loginFromLaunch().then(refresh).catch(error => { failure(error); setPending(false); }); };
+    launch(); window.addEventListener("hashchange", launch);
+    return () => window.removeEventListener("hashchange", launch);
+  }, [refresh, failure]);
+  const success = useCallback((title: string) => setToasts([{ id: "request", tone: "success", title }]), []);
+  return { value, pending, locked, refresh, failure, success, toasts,
+    dismiss: (id: string) => setToasts(items => items.filter(item => item.id !== id)) };
+}