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/package.json

@@ -0,0 +1,23 @@
+{
+  "name": "frontend",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vue-tsc --noEmit && vite build",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "kaplay": "^3001.0.19",
+    "vue": "^3.5.13",
+    "vue-router": "^4.5.1"
+  },
+  "devDependencies": {
+    "@tailwindcss/vite": "^4.2.1",
+    "@vitejs/plugin-vue": "^5.2.3",
+    "tailwindcss": "^4.2.1",
+    "typescript": "^5.7.3",
+    "vite": "^7.3.1",
+    "vue-tsc": "^2.2.8"
+  }
+}