fix: add WASM init error handling to index page

docs_v1.0/doc_wasm/index.html

@@ -85,33 +85,39 @@ async function checkAuth() {
 }
 
 async function initApp() {
-  await init();
-  
-  // Parse module list
-  modules = JSON.parse(module_list());
-  const listEl = document.getElementById('module-list');
-  modules.forEach(([name, cn, en]) => {
-    const a = document.createElement('a');
-    a.className = 'module-link';
-    a.dataset.module = name;
-    a.textContent = `${cn} - ${en}`;
-    a.onclick = (e) => { e.preventDefault(); loadDoc(name); };
-    listEl.appendChild(a);
-  });
-  
-  // Logout
-  document.getElementById('logout-btn').onclick = async (e) => {
-    e.preventDefault();
-    await fetch(`${API}/api/v1/auth/logout`, {method:'POST'});
-    window.location.reload();
-  };
-  
-  // Load initial module from hash or default
-  const hash = location.hash.slice(1);
-  if (hash) {
-    loadDoc(hash);
-  } else {
-    loadDoc('01_auth');
+  const el = document.getElementById('content');
+  try {
+    await init();
+    el.innerHTML = '<p>WASM initialized. Loading modules...</p>';
+    
+    // Parse module list
+    modules = JSON.parse(module_list());
+    const listEl = document.getElementById('module-list');
+    modules.forEach(([name, cn, en]) => {
+      const a = document.createElement('a');
+      a.className = 'module-link';
+      a.dataset.module = name;
+      a.textContent = `${cn} - ${en}`;
+      a.onclick = (e) => { e.preventDefault(); loadDoc(name); };
+      listEl.appendChild(a);
+    });
+    
+    // Logout
+    document.getElementById('logout-btn').onclick = async (e) => {
+      e.preventDefault();
+      await fetch(`${API}/api/v1/auth/logout`, {method:'POST'});
+      window.location.reload();
+    };
+    
+    // Load initial module from hash or default
+    const hash = location.hash.slice(1);
+    if (hash) {
+      loadDoc(hash);
+    } else {
+      loadDoc('01_auth');
+    }
+  } catch(e) {
+    el.innerHTML = `<p style="color:red">WASM init error: ${e.message}</p><pre>${e.stack}</pre>`;
   }
 }
 
@@ -121,6 +127,7 @@ window.onpopstate = () => {
   if (hash) loadDoc(hash);
 };
 
+document.getElementById('content').innerHTML = '<p>Starting WASM...</p>';
 initApp();
 </script>
 </body>