Add Detected Username to Recorded Image in snapshots

The validation snapshots images are great. Can the username that is found be added to the captured image in snapshots to more easily validate if the correct user was detected.

Start by tracing the validation snapshot capture entry point and the code that produces the detected username. Run the existing validation snapshot flow to inspect the current images. The work is done when each captured image visibly includes the username found during detection.

Written by the indexing model from the issue text.