Mode 1 — Dual Lift & Place
Two cranes lift, transport plumb, set down. Static split + dynamic margin from inclination tolerance α + sequential set-down landing scenarios.
Open Mode 1 →Rotation / Tailing
Head crane stationary, tail crane walks load upright. Per-crane load vs rotation angle θ (0–90°).
Open Mode 2 →Load existing case
Reload a previously saved .case.json file from either mode.