Add Mode1Svelte - independent copy of Mode1 for future SvelteKit integration

- Created Mode1Svelte as complete standalone project
- Identical to Mode1 currently (Hono backend + Vite frontend)
- Separate auth-module copy (no dependencies on Mode1)
- Updated orchestrator to default to Mode1Svelte
- Both Mode1 and Mode1Svelte are independent and interchangeable via ModeSwitch
- Ready for gradual Svelte/SvelteKit migration while maintaining API compatibility

Mode1Svelte/vite.config.ts

@@ -0,0 +1,17 @@
+import { defineConfig } from 'vite';
+
+export default defineConfig({
+  build: {
+    outDir: 'frontend/dist',
+    emptyOutDir: true,
+    lib: {
+      entry: 'frontend/auth.ts',
+      name: 'AuthModule',
+      fileName: () => 'auth.js',
+      formats: ['umd']
+    }
+  },
+  server: {
+    middlewareMode: true
+  }
+});