Initial hop. implementation and UGREEN NAS deployment guide

apps/server/test/refresh-queue.test.ts

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+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+import { createRefreshQueue } from '../../web/src/refreshQueue.js';
+
+test('조회 중 들어온 수락 이벤트를 버리지 않고 최신 상태를 다시 읽는다', async () => {
+  let status = 'pending',
+    seen: string[] = [];
+  let release!: () => void, started!: () => void;
+  const firstStarted = new Promise<void>((resolve) => {
+    started = resolve;
+  });
+  const pause = new Promise<void>((resolve) => {
+    release = resolve;
+  });
+  const refresh = createRefreshQueue(async () => {
+    const snapshot = status;
+    if (!seen.length) {
+      started();
+      await pause;
+    }
+    seen.push(snapshot);
+  });
+  const initial = refresh();
+  await firstStarted;
+  status = 'accepted';
+  const update = refresh();
+  refresh();
+  release();
+  await Promise.all([initial, update]);
+  assert.deepEqual(seen, ['pending', 'accepted']);
+});
+test('실패한 조회 다음 요청은 정상 재시도', async () => {
+  let calls = 0;
+  const refresh = createRefreshQueue(async () => {
+    if (++calls === 1) throw Error('network');
+  });
+  await assert.rejects(refresh(), /network/);
+  await refresh();
+  assert.equal(calls, 2);
+});