Drone Survey Flight-Grid GSD, Overlap Interval & Sub-Pixel Motion-Blur Speed-Cap Solver

Deterministic Pinhole ground-sample distance GSD = (H_agl * p_px) / f_mm + linear motion-blur v_max = (0.5 * GSD) / t_shutter + SD raw-write cadence check engine (.json, .kml, .csv, .pdf) built for DJI Mavic 3 Enterprise, DJI Matrice 350 RTK, WingtraOne, Pix4D / Agisoft — zero-upload ephemeral Wasm RAM execution.