Prepare Cloudflare Workers/Pages deploy for the static front-end.

Add wrangler assets config, multi-page Vite build (game + studio),
cache/WASM headers, and deploy scripts so `npm run deploy` publishes dist.

vite.config.js

@@ -1,12 +1,20 @@
+import { resolve } from 'node:path';
 import { defineConfig } from 'vite';
 
 export default defineConfig({
   server: { port: 5174, open: true },
+  // Multi-page: main game + character studio both ship as real HTML entries.
   build: {
     target: 'es2022',
     // The body/skin generators are one deterministic chunk; splitting them buys
     // nothing and costs a round trip before anything can render.
     chunkSizeWarningLimit: 2500,
+    rollupOptions: {
+      input: {
+        main: resolve(import.meta.dirname, 'index.html'),
+        character: resolve(import.meta.dirname, 'character.html'),
+      },
+    },
   },
   // box3d.js ships an Emscripten bundle that resolves its .wasm via
   // import.meta.url. Pre-bundling rewrites that URL and breaks the lookup, so