Restore JSX frontend with Login/Dashboard/Editor from 249d5fb, remove TS frontend, fix nginx port to 3001

frontend/vite.config.ts

@@ -1,15 +0,0 @@
-import { defineConfig } from 'vite'
-import react from '@vitejs/plugin-react'
-
-export default defineConfig({
-  plugins: [react()],
-  server: {
-    proxy: {
-      '/api': 'http://localhost:3001',
-      '/ws': {
-        target: 'http://localhost:3001',
-        ws: true,
-      },
-    },
-  },
-})