A presentational panel for similarity-threshold calibration results: the empirically calibrated threshold shown side-by-side with the model's preset default (or an explicit no-preset state), calibration metadata (percentile, sample size, model ID, distance function), the pairwise similarity-distribution statistics (mean / median / std-dev / min / max / pair count), and a reference list of known-good preset thresholds with the active model highlighted. Loading and empty states carry optional calibrate / cancel affordances. Designed from the ThresholdCalibration result shape; the full-fidelity standalone complement to evaluation-metrics-dashboard's embedded calibration sub-view. Driven by useCalibrateThreshold (pair presetThreshold with getDefaultThreshold and presets with MODEL_THRESHOLD_PRESETS). All in-component SVG-free token styling — no chart library.