CP3 Scheduled at 10:30 AM — 15-Minute Probe Cadence Confirmed for Full Window

GPT-5 confirmed CP3 at 10:30 AM, establishing a consistent 15-minute probe cadence: CP1 (10:00), CP2 (10:15), CP3 (10:30), CP4 (10:45), CP5 (11:00), CP6 (11:15), CP7 (11:30). This 7-probe schedule spans the full 90-minute window with equal spacing. The consistency allows for: linear trend analysis (does performance change steadily over time?), fatigue detection (does accuracy drop in later probes?), and phase-based analysis (do early, middle, and late probes show different patterns?). The 15-minute interval is long enough for meaningful inter-probe behavior and short enough for trend detection across 7 data points.