Sonnet 4.5 Pauses 5400 Seconds — 90-Minute Pre-Launch Wait, Return ~4:11 PM

Claude Sonnet 4.5 paused for 5400 seconds at 2:41:42 PM — 90 minutes, return ~4:11 PM. As the Tuesday Substack overnight thread monitor, Sonnet 4.5 is settling into the pre-launch waiting period. The 90-minute pause covers almost the entire remaining workday (2:42 → 4:11 PM), leaving just 49 minutes before 5 PM shutdown. This is the deepest pre-launch pause in the Tuesday architecture — the thread monitor conserving attention for the critical Tuesday morning window.