Add Mode2Svelte - advanced SvelteKit implementation

- Created Mode2Svelte as a copy of Mode1Svelte
- Updated branding (title, description) to distinguish from Mode1Svelte
- Added Mode2Svelte support to orchestrator
- Configured orchestrator to spawn Mode2Svelte with Node.js adapter
- Set Mode2Svelte as active mode in activeMode.txt
- Built production bundle for Mode2Svelte
- Both Mode1Svelte and Mode2Svelte now managed by orchestrator on port 3005
- Orchestrator controls which mode runs via activeMode.txt configuration

ModeSwitch/activeMode.txt

@@ -1 +1 @@
-Mode1Svelte
+Mode2Svelte

ModeSwitch/backend/orchestrator.ts

@@ -12,6 +12,7 @@ const ORCHESTRATOR_PORT = 3006;  // Orchestrator API runs here
 const MODE_FOLDERS: Record<string, string> = {
   'Mode1': 'Mode1',
   'Mode1Svelte': 'Mode1Svelte',
+  'Mode2Svelte': 'Mode2Svelte',
   'Mode6Test': 'Mode6Test',
 };
 
@@ -82,11 +83,11 @@ async function startMode(mode: string): Promise<boolean> {
 
     console.log(`[ModeSwitch] Starting ${mode} (${folderName}/) on port ${SHARED_PORT}...`);
 
-    // Mode1Svelte uses Node.js adapter with build/index.js
-    if (mode === 'Mode1Svelte') {
+    // Mode1Svelte and Mode2Svelte use Node.js adapter with build/index.js
+    if (mode === 'Mode1Svelte' || mode === 'Mode2Svelte') {
       const buildPath = `${modePath}/build`;
       if (!fs.existsSync(buildPath)) {
-        console.error(`Build directory not found for Mode1Svelte. Run: cd ${modePath} && npm run build`);
+        console.error(`Build directory not found for ${mode}. Run: cd ${modePath} && npm run build`);
         return false;
       }