[bug]: ros2 launch core core.launch.py fails to find executable despite successful build and source

After following the README instructions to build the minimal_software_example repository using:

```
colcon build --packages-select core pure_pursuit simple_planner watchdog
source install/setup.bash
ros2 launch core core.launch.py
```

- The build completes without errors.
- The workspace is sourced properly.

I consistently encounter the error:
`[ERROR] [launch]: executable 'urg_node2_driver' not found on the libexec directory '/home/ahussein/minimal_sofware_example/install/urg_node2/lib/urg_node2'
`

Comienza con la secuencia de comandos de README e inspecciona core.launch.py; después, reproduce los pasos de build, source y launch. Rastrea por qué launch busca en el directorio libexec de urg_node2 sin encontrar urg_node2_driver. Se considera terminado cuando los comandos documentados se completan sin el error executable-not-found reportado.

Escrito por el modelo de indexación a partir del texto del issue.