Add try-catch around RDP script initialization to catch errors

- Wrapped the initial script execution in try-catch
- Added alert for critical errors to show if script fails
- This will help identify if JavaScript syntax errors are preventing execution
- If alert appears, it means script is running but has errors
- If no alert appears, script is completely blocked

wssshd2/templates/rdp.html

@@ -313,26 +313,37 @@ console.log('RDP page script starting...');
 
 // init kbdlayout_input
 let defaultLayoutId;
-for (let i = 0; i < layouts.length; ++i) {
-    const layout = layouts[i];
-    const displayName = layout.displayName;
-    const opt = document.createElement('option');
-    opt.textContent = `${layout.localeName} 0x${layout.klid.toString(16).padStart(5, '0')} (${displayName})`;
-    opt.value = i;
-    if (displayName === 'United States - English') {
-        opt.selected = true;
-        defaultLayoutId = i;
+try {
+    if (typeof layouts === 'undefined') {
+        throw new Error('layouts is not defined - reversed_layouts.js may not have loaded');
     }
-    // Since we don't have kbdlayout_input in this simplified version, we'll use default
+    for (let i = 0; i < layouts.length; ++i) {
+        const layout = layouts[i];
+        const displayName = layout.displayName;
+        const opt = document.createElement('option');
+        opt.textContent = `${layout.localeName} 0x${layout.klid.toString(16).padStart(5, '0')} (${displayName})`;
+        opt.value = i;
+        if (displayName === 'United States - English') {
+            opt.selected = true;
+            defaultLayoutId = i;
+        }
+        // Since we don't have kbdlayout_input in this simplified version, we'll use default
+    }
+    console.log('Keyboard layouts initialized, defaultLayoutId:', defaultLayoutId);
+} catch (error) {
+    console.error('Error initializing keyboard layouts:', error);
+    defaultLayoutId = 0; // fallback
 }
-console.log('Keyboard layouts initialized, defaultLayoutId:', defaultLayoutId);
 
 let kbdInputLayoutEvent = () => {};
 
 let _Module = null;
 
 console.log('Starting WebAssembly module loading...');
-WallixModule({
+if (typeof WallixModule === 'undefined') {
+    console.error('WallixModule is not defined - rdp.wasm.js may not have loaded');
+} else {
+    WallixModule({
     // INITIAL_MEMORY: 16777216, // 16**6
     // INITIAL_MEMORY: 268435456, // 16**7
 }).then((Module) => {