feat: add protocol interaction observability

vite.config.ts

@@ -2,6 +2,8 @@ import { defineConfig } from 'vite';
 import react from '@vitejs/plugin-react';
 import path from 'path';
 
+const apiProxyTarget = process.env.API_PROXY_TARGET ?? 'http://localhost:3000';
+
 export default defineConfig({
   plugins: [react()],
   cacheDir: 'node_modules/.vite-cmpp',
@@ -15,7 +17,7 @@ export default defineConfig({
     strictPort: false,
     proxy: {
       '/api': {
-        target: 'http://localhost:3000',
+        target: apiProxyTarget,
         changeOrigin: true,
       },
     },
@@ -27,7 +29,7 @@ export default defineConfig({
   preview: {
     proxy: {
       '/api': {
-        target: 'http://localhost:3000',
+        target: apiProxyTarget,
         changeOrigin: true,
       },
     },