fix(build): exclude scripts/ from tsconfig to fix Vercel build

The gen-style-thumbs.ts script uses Bun-only APIs (import.meta.dir,
Bun.write) which fail TypeScript checking under the project's Next.js
tsconfig. Exclude the scripts directory from compilation.

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

tsconfig.json

@@ -51,6 +51,7 @@
     ".next/dev/types/**/*.ts"
   ],
   "exclude": [
-    "node_modules"
+    "node_modules",
+    "scripts"
   ]
 }