Agent Vector Sampled
@Serializable
@SerialName(value = "AgentVectorSampled" )
A sampled per-agent velocity (vx,vy) and/or net steering force (fx,fy) for the vector overlay (G10). Rate-limited by the sampler's interval (default 5/sec), decoupled from the model's integration step. A NaN component means it wasn't captured. Opt-in (off by default) — the volume-sensitive overlay.