Trajectories

TrajectoryData.from_native(trajectory) copies native time and per-state values into immutable tuples. Construction requires nonempty strictly increasing time, at least one value series, and series lengths equal to the time length. column(name) returns a series or raises ValidationError for an unknown name.

TrajectoryData is a validated result container. It does not interpolate, resample, plot, export, evaluate event roots, or add uncertainty bands.