Charts

One Chart frame, three marks inside it (Line, Bars, Dots), and the Gauge.

The Chart owns the axes and grid and draws nothing itself; the marks carry the data, each bound to its own table, all sharing one grid. Two tables plot together, a line sits over bars, and a small Chart with axes off is the word-sized spark. Scales, axes, ticks, and legends are system-owned; colors ride the monochrome series ramp, with one optional override per mark. The one place status hue appears is Gauge thresholds.