ReadonlylabelOptional ReadonlypeakHighlights the metric with the amber accent — used for the "peak" metrics in the Session Overview grid (max speed, peak HP, etc.).
Optional ReadonlysubOptional secondary line under the value — e.g. @ 11:52 or
moving avg.
Optional ReadonlytestOptional ReadonlyunitOptional unit suffix rendered inline at the end of the value.
ReadonlyvalueAlready-formatted display value. Caller decides precision / unit conversion before passing in.
Short label rendered above the value. Tracks the design's all-caps, 10px label style.