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>

server/drizzle.config.ts

@@ -0,0 +1,10 @@
+import { defineConfig } from 'drizzle-kit'
+
+export default defineConfig({
+  schema: './src/db/schema.ts',
+  out: './drizzle',
+  dialect: 'sqlite',
+  dbCredentials: {
+    url: './data/botfights.db',
+  },
+})