Unit 7 Wrap-Up: Which Layer Was Actually Missing?

Use your Workspace Build and Overlay Record. Respond in 75–125 words or make an equivalent one-minute recording. Use at least two exact labels from your artifact, such as robot_ws, robotnix_bringup, install/setup.bash, ros2 pkg prefix, or ament_cmake.

1. Which record best proved that the package had built successfully, and why was that different from package visibility in a fresh shell?
2. What changed after you sourced the workspace overlay, and what did the resolved package prefix establish?
3. Which startup or runtime fact remains uncertain even after the workspace builds and the package prefix resolves correctly?