4x4 Lift-Kit & Tire-Size Approach, Breakover, Departure & Diff-Clearance Solver

Deterministic Rigid-axle vs IFS static clearance kinematics + wheelbase breakover chord-arc geometry (2 * arctan(2 * h_belly / L_wheelbase)) engine (.json, .csv) built for Old Man Emu ARB, Icon Vehicle Dynamics, Fox Offroad, Toyota / Jeep — zero-upload ephemeral Wasm RAM execution.

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