Struct AtomTrajectory 

pub struct AtomTrajectory {
    pub atom_name: String,
    pub conditional_step_contrasts: Vec<RieszDebiasReport>,
    pub transports: Vec<LayerTransportReport>,
    pub change_evidence: StructureLedger,
}

The training-dynamics trajectory of one atom across the checkpoint axis.

The PRIMARY, coverage-valid deliverable is Self::change_evidence: the anytime-valid e-process answering “did atom k change during training?”. Self::conditional_step_contrasts is a secondary, descriptive readout (see its docs for the conditional caveat).

Fields

atom_name: String

conditional_step_contrasts: Vec<RieszDebiasReport>

Debiased g^{(c+1)}(t_mode) − g^{(c)}(t_mode) for each consecutive checkpoint step, with its plug-in SE.

CONDITIONAL ON THE FITTED COORDINATES (not a coverage-valid CI). The debiased SE here conditions away the generated-regressor uncertainty in the estimated latent coordinates t̂ and activations â — the exact correction the marginal-slope family exists to make (issue #1115). It is reported only as a conditional contrast point estimate with a plug-in SE, NOT as an interval with frequentist coverage for the population displacement. The headline change verdict is carried by the e-process Self::change_evidence, which IS anytime-valid; this field is a descriptive companion. Read the SE accordingly.

transports: Vec<LayerTransportReport>

Consecutive-checkpoint chart correspondences (checkpoint axis reused as the transport “layer” axis).

change_evidence: StructureLedger

PRIMARY deliverable: anytime-valid evidence that the atom changed at each consecutive checkpoint step, one calibrated e-value per step into a per-step claim. Valid at any data-dependent stopping time.