Add Vite+React frontend scaffold, update build pipeline, dashboard tweaks

frontend/vite.config.ts

@@ -0,0 +1,8 @@
+import { defineConfig } from 'vite';
+import react from '@vitejs/plugin-react';
+import tailwindcss from '@tailwindcss/vite';
+
+export default defineConfig({
+  base: './',
+  plugins: [react(), tailwindcss()]
+});