fix: Add serve to dependencies

- Include serve package in prod dependencies
- Required for static file serving in Docker
- Fixes missing serve command

package.json

@@ -14,6 +14,7 @@
     "astro": "^5.17.1",
     "astro-consent": "^1.0.17",
     "drizzle-orm": "^0.45.1",
+    "serve": "^14.2.6",
     "tailwindcss": "^4.2.1"
   }
 }