Expand README with architecture and setup details

vite.config.ts

@@ -0,0 +1,17 @@
+import { defineConfig } from 'vite';
+import react from '@vitejs/plugin-react';
+
+const host = process.env.TAURI_DEV_HOST || '127.0.0.1';
+
+export default defineConfig({
+  plugins: [react()],
+  clearScreen: false,
+  server: {
+    host: host || false,
+    port: 5173,
+    strictPort: true,
+    watch: {
+      ignored: ['**/src-tauri/**'],
+    },
+  },
+});