Planing Hull Crouch/Savitsky Speed-Power & Trim-Tab Angle Solver

Deterministic Savitsky (1964) prismatic planing lift-drag equilibrium + porpoising stability boundary inequality + flap lift-moment solver engine (.json, .csv, .dxf) built for Zipwake, Lenco Marine, Bennett, Garmin — zero-upload ephemeral Wasm RAM execution.

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