feat: botfights v1 — full fighting game with Kaplay engine

- Vue 3 + Vite + Tailwind 4 frontend with synthwave aesthetic
- Hono backend on port 9100 with SQLite/Drizzle
- Procedural pixel-art sprite generator (48x48, 8 animation states)
- Kaplay fight scene with punch/kick/special/knockback/KO animations
- 12 mock bots across 6 tiers with Elo rating system
- 9 challenge types, 10 fight arenas with modifiers
- Fight replay with staggered battle log and ~1 min timing
- Sprite preview page at /sprites

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/vite.config.ts

@@ -0,0 +1,20 @@
+import { defineConfig } from 'vite'
+import vue from '@vitejs/plugin-vue'
+import tailwindcss from '@tailwindcss/vite'
+
+export default defineConfig({
+  plugins: [vue(), tailwindcss()],
+  server: {
+    port: 9101,
+    proxy: {
+      '/api': {
+        target: 'http://localhost:9100',
+        changeOrigin: true,
+      },
+      '/ws': {
+        target: 'ws://localhost:9100',
+        ws: true,
+      },
+    },
+  },
+})