Low-and-Slow BBQ Evaporative Stall Wet-Bulb Predictor & Butcher-Paper Timer

Deterministic Coupled heat & mass transfer meat surface energy balance: h_c*(T_pit - T_s) = m_evap * h_fg(T_wb) + k*(dT/dx) with collagen-to-gelatin hydrolysis integral engine (.json, .ics, .pdf) built for Big Green Egg, Traeger, Kamado Joe, Meater — zero-upload ephemeral Wasm RAM execution.