fix(build): add workspace packages to Next.js transpilePackages

- Add @tpmjs/db, @tpmjs/types, @tpmjs/env to transpilePackages
- Fixes API routes timing out on Vercel due to untranspiled TypeScript imports
- Ensures all workspace dependencies are properly bundled for serverless functions

Without transpilation, Vercel couldn't properly bundle the @tpmjs/db package,
causing API route handlers to hang when trying to import Prisma client.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

apps/web/next.config.ts

@@ -1,7 +1,7 @@
 import type { NextConfig } from 'next';
 
 const nextConfig: NextConfig = {
-  transpilePackages: ['@tpmjs/ui', '@tpmjs/utils'],
+  transpilePackages: ['@tpmjs/ui', '@tpmjs/utils', '@tpmjs/db', '@tpmjs/types', '@tpmjs/env'],
   reactStrictMode: true,
 };