A three-minute narrated walkthrough made from application screenshots. Synthetic low-voltage captures demonstrate measurements, withheld spectra, and a saved Meta Muse Spark Open response.
The video predates the November 2 comparison feature. Open the current workbench, pin the 50 Hz example, then select Reference signal. Inspect the 73.545-percentage-point band-share change. Switch to Missing samples to see the spectrum withheld. Recorded mode clearly identifies a saved response and makes no inference request.
Current evidence: 54 passing code tests, 15 deterministic synthetic scenarios, and 520 archived successful model-call records. The corrected archive audit is an integrity check, not a factual-accuracy score.
Try the workbench · Watch on YouTube · Judge guide · Source and tests · Corrected benchmark audit · Download video
All evaluation captures are synthetic. Hardware performance and user outcomes have not been evaluated.