Index: frontend/vite.config.js
===================================================================
--- frontend/vite.config.js	(revision 0427f599f15f08425a193b5b366fd15cc0a95f42)
+++ frontend/vite.config.js	(revision 72053b5fc3ff291757af1cdd64e8fdfcb9e9b17d)
@@ -1,26 +1,7 @@
 import { defineConfig } from 'vite'
 import react from '@vitejs/plugin-react'
-import tailwindcss from '@tailwindcss/vite';
 
 // https://vite.dev/config/
 export default defineConfig({
-  plugins: [react(), tailwindcss()],
-  server: {
-    proxy: {
-      // Dev-only Yahoo Finance proxy to avoid browser CORS.
-      // Frontend can call `/yahoo/...` and `/yahoo2/...` as same-origin.
-      '/yahoo': {
-        target: 'https://query1.finance.yahoo.com',
-        changeOrigin: true,
-        secure: true,
-        rewrite: (path) => path.replace(/^\/yahoo/, ''),
-      },
-      '/yahoo2': {
-        target: 'https://query2.finance.yahoo.com',
-        changeOrigin: true,
-        secure: true,
-        rewrite: (path) => path.replace(/^\/yahoo2/, ''),
-      },
-    },
-  },
+  plugins: [react()],
 })