Presses A once to skip the attract video, then again during the build-in, and records the press instant so a press that lands late is reported rather than silently reinterpreted. Blind timing is the weak point: the build-in is ~5 s wide and run pacing has been seen to vary 2x. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Jc4pciRArGHfxGGhEbwp5t