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

Mode2Svelte/postcss.config.js

@@ -0,0 +1,5 @@
+export default {
+  plugins: {
+    '@tailwindcss/postcss': {},
+  },
+};