PCB Power-Plane Short-Circuit 4-Wire Kelvin Millivolt-Drop Spatial Triangulator

Deterministic 2D Poisson/Laplace potential-sink inversion (logarithmic Green's function V(r) = V0 - (I*R_sheet/(2*pi))*ln(|r - r_short|) nonlinear least-squares localization) engine (.csv, .gbr, .png, .json) built for Keithley, Hioki RM3548, Keysight, Quick / Hakko — zero-upload ephemeral Wasm RAM execution.