fix: guard service worker registration

packages/web/src/main.tsx

@@ -13,16 +13,75 @@ declare global {
 
 window.__OPENCHAMBER_RUNTIME_APIS__ = createWebAPIs();
 
-if (import.meta.env.PROD) {
-  registerSW({
-    onRegisterError(error: unknown) {
-      console.warn('[PWA] service worker registration failed:', error);
-    },
-  });
-} else if ('serviceWorker' in navigator) {
-  void navigator.serviceWorker.getRegistrations()
-    .then((registrations) => Promise.all(registrations.map((registration) => registration.unregister())))
-    .catch(() => {});
-}
+type PrerenderingDocument = Document & {
+  prerendering?: boolean;
+};
 
-import('@openchamber/ui/main');
+const canUseServiceWorker = (): boolean => {
+  if (!('serviceWorker' in navigator)) return false;
+  if (!window.isSecureContext) return false;
+  if (window.location.protocol !== 'http:' && window.location.protocol !== 'https:') return false;
+
+  const documentState = document as PrerenderingDocument;
+  if (documentState.prerendering || String(document.visibilityState) === 'prerender') {
+    return false;
+  }
+
+  return true;
+};
+
+const runWhenDocumentCanRegisterServiceWorker = (task: () => void): void => {
+  let completed = false;
+  const run = () => {
+    if (completed) return;
+    if (canUseServiceWorker()) {
+      completed = true;
+      task();
+    }
+  };
+
+  const afterLoad = () => {
+    setTimeout(run, 0);
+  };
+
+  if (document.readyState === 'complete') {
+    afterLoad();
+  } else {
+    window.addEventListener('load', afterLoad, { once: true });
+  }
+
+  const documentState = document as PrerenderingDocument;
+  if (documentState.prerendering || String(document.visibilityState) === 'prerender') {
+    document.addEventListener('visibilitychange', run, { once: true });
+  }
+};
+
+const registerPwaServiceWorker = (): void => {
+  runWhenDocumentCanRegisterServiceWorker(() => {
+    try {
+      registerSW({
+        onRegisterError(error: unknown) {
+          console.warn('[PWA] service worker registration skipped:', error);
+        },
+      });
+    } catch (error) {
+      console.warn('[PWA] service worker registration skipped:', error);
+    }
+  });
+};
+
+const unregisterDevelopmentServiceWorkers = (): void => {
+  runWhenDocumentCanRegisterServiceWorker(() => {
+    void navigator.serviceWorker.getRegistrations()
+      .then((registrations) => Promise.all(registrations.map((registration) => registration.unregister())))
+      .catch(() => {});
+  });
+};
+
+void import('@openchamber/ui/main');
+
+if (import.meta.env.PROD) {
+  registerPwaServiceWorker();
+} else {
+  unregisterDevelopmentServiceWorkers();
+}