Operational Agency Fields: Experiment 10 on Shadowing, Constraint Diffraction, Entropy Survival, and Refraction Boundaries in the Volumetric Time Model

This record contains the Experiment 10 paper in the Volumetric Time Model research program. The paper presents E10 as a dedicated empirical geometry suite for operational agency under delay, instability, and constraint. Using the calibrated agency scale established by Experiment 9, the paper studies four mechanisms: temporal shadowing by lower-latency competitors, constraint diffraction through fixed architectural rules, entropy-resilient survival of readable structure, and refractive recovery through early logic-layer intervention. The main results are: a hollow-basin diffraction result in which the effective steering horizon collapses from about tau ≈ 34 to tau = 3, corresponding to a 91.2% loss of steering volume a precision entropy survival profile with layered crossings at tau_alpha ≈ 133.1427, tau_noise ≈ 156.8165, and tau_alpha^2 ≈ 256.1488 a 486-run local portability sweep preserving the full ordering tau_alpha < tau_noise < tau_alpha^2 in 100% of tested cases a refraction sweep showing that positive horizon recovery is placement-sensitive, with gains confined to very early placement and a best observed gain of 48.50% The paper argues that operational agency is better modeled as a geometric field of shadowing, diffraction, resonance, and refraction than as a simple binary control channel. It is the empirical companion to the separate theory paper, The Operational Agency Horizon: A Unified Framework for Steering, Forecasting, and Readout Boundaries in the Volumetric Time Model.