The middle of December brought a deep, motionless cold to the eastern reach of the estate, freezing the margins of the Hudson into thick sheets of opaque green ice. Under a low sky that held no promise of sun, the snow lay unbroken across the upper lawns, smoothing the granite steps and thick stone retaining walls into soft, rounded contours. For eight years, the morning hours had possessed a specific, sharp texture: the fast-moving blue diagnostics on the primary consoles, the rhythmic cadence of market updates from London and Singapore, and the steady hum of sub-grade processing arrays executing high-frequency risk balances. Today, the study in the east wing sat in total stillness. The primary terminals had been decoupled from the live operational network during the transition trials, l

