Begin Hnefatafl from the game kit

vite.config.ts

@@ -0,0 +1,26 @@
+import adapter from '@sveltejs/adapter-static';
+import { sveltekit } from '@sveltejs/kit/vite';
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+	plugins: [
+		sveltekit({
+			compilerOptions: {
+				// Force runes mode for the project, except for libraries. Can be removed in svelte 6.
+				runes: ({ filename }) => (filename.split(/[/\\]/).includes('node_modules') ? undefined : true)
+			},
+			// A static build: Caddy serves files and proxies /api and /ws to the game server.
+			adapter: adapter({ fallback: 'index.html' })
+		})
+	],
+	server: {
+		// In development the game server runs beside Vite; in production Caddy does this.
+		proxy: {
+			'/api': 'http://localhost:8789',
+			'/ws': { target: 'ws://localhost:8789', ws: true }
+		}
+	},
+	test: {
+		include: ['src/**/*.test.ts']
+	}
+});