⚙️ EV Motor Lab: Torque–Speed Curve, Field Weakening and Permanent-Magnet vs Induction — 2D Current Plane

2D Canvas companion of the EV traction motor lab: dq current plane with current circle, voltage ellipse and MTPA locus, torque and power envelope, efficiency map, loss breakdown and a 0-100 km/h launch from the same motor physics as the 3D scene.