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/.gitignore

@@ -0,0 +1,23 @@
+node_modules
+
+# Output
+.output
+.vercel
+.netlify
+.wrangler
+/.svelte-kit
+/build
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Env
+.env
+.env.*
+!.env.example
+!.env.test
+
+# Vite
+vite.config.js.timestamp-*
+vite.config.ts.timestamp-*