[change: seg-v4] ML Models and Trajectory Segmentation: segmentation model v4 (alpha = 0 for immobile segments), benchmark
[change: seg-d-axis] Trajectory Segmentation: D axis with unit and Log D axis option
[change: seg-hide-immobile] Show immobile highlight starts over with each Perform Analysis
[change: seg-hide-immobile] D vs α legend rows; Show immobile highlight behaviour
[change: seg-hide-immobile] Show immobile: highlight, legend counts, D plot of Segment Stats
[change: seg-hide-immobile] Trajectory Segmentation: Show immobile option in D vs α and Segment Stats
[change: seg-dvsa-level] Trajectory Segmentation: Frames / Segments dropdown of the D vs α tab
[change: units] Units: Data Manager columns, mixing rule, Units window in the tabs, unit-named CSV columns
[change: csv-conventions] CSV export columns: experiment, track_id, input FRAME
[change: imagej-docs-sync] Input data and Trajectory Segmentation: Exp N tag, segment step-line value
[change: save-plot-docs] Document Save plot (SVG) and which tabs save CSV
[change: seg-export-docs] Save raw preds exports the per-frame state; Save segments omits experiment for a single experiment
[change: seg-model-rules] Document Model segments for custom models, the default model's immobile rule, and verbatim custom α
Update Trajectory-Segmentation.md
correction pass
Update segmentation + others
continue upds
finish draft landing page