Rebuild on the Bennett platform: Spring Boot + Vite/React

Same site — glass header, bento grid, hero drift, dark mode — with three things fixed
on the way:

- Tailwind and lucide came from CDNs on every page load, and the fonts from Google. All
  are now built in or self-hosted, so the site owes nothing to third parties at runtime.
- The hero and bento photographs were hot-linked from Unsplash. They are re-encoded to
  webp and served from the MinIO bucket with a year-long cache.
- The ministries and labs were hard-coded in the markup, so launching a ministry meant
  editing HTML. They now come from /api/network.

The mobile menu button also opens something now; it did nothing before.

frontend/vite.config.ts

@@ -0,0 +1,11 @@
+import { defineConfig } from 'vite';
+import react from '@vitejs/plugin-react';
+import tailwindcss from '@tailwindcss/vite';
+import path from 'node:path';
+
+export default defineConfig({
+  plugins: [react(), tailwindcss()],
+  resolve: { alias: { '@': path.resolve(__dirname, './src') } },
+  server: { port: 5173, proxy: { '/api': 'http://localhost:8080' } },
+  build: { outDir: 'dist' },
+});