Initial commit: RHINE LAB · ANALYSIS OS：三维界面与动效实验（本仓库不含个人归档索引数据）

public/update.js

@@ -0,0 +1,45 @@
+// Network-only recovery entry: older workers do not intercept this page.
+const button = document.querySelector('#update');
+const status = document.querySelector('#status');
+function waitForState(worker, states) {
+  return new Promise((resolve, reject) => {
+    const finish = error => {
+      clearTimeout(timer);
+      worker.removeEventListener('statechange', check);
+      error ? reject(error) : resolve();
+    };
+    const check = () => {
+      if (states.includes(worker.state)) finish();
+      else if (worker.state === 'redundant') finish(new Error('download'));
+    };
+    const timer = setTimeout(() => finish(new Error('timeout')), 120000);
+    worker.addEventListener('statechange', check);
+    check();
+  });
+}
+button.addEventListener('click', async () => {
+  button.disabled = true;
+  status.textContent = '正在检查并下载完整资源，请保持联网…';
+  try {
+    if (!window.isSecureContext || !('serviceWorker' in navigator)) throw new Error('unsupported');
+    const base = new URL('./', location.href);
+    const registration = await navigator.serviceWorker.register(new URL('sw.js', base), {scope: base.href, updateViaCache: 'none'});
+    // Await the network check even if a previous waiting version already exists.
+    await registration.update();
+    const installing = registration.installing;
+    if (installing) await waitForState(installing, ['installed', 'activating', 'activated']);
+    const worker = registration.waiting || registration.active;
+    if (!worker) throw new Error('download');
+    if (registration.waiting) {
+      status.textContent = '资源已就绪，正在应用更新…';
+      worker.postMessage({type: 'RHINE_APPLY_UPDATE'});
+    }
+    await waitForState(worker, ['activated']);
+    // Claiming clients is part of the worker's activation; navigate afterwards.
+    location.replace(base.href);
+  } catch {
+    status.textContent = '更新未完成，已保留原有数据。请确认网络可用后重试。';
+    button.textContent = '重试更新 ↻';
+    button.disabled = false;
+  }
+});