Added

Auto-Scale Axis toggle for % of Total chart widgets

Chart widgets with "Show Metrics as % of Total" enabled now support a new "Auto-Scale Axis" toggle in the Metric Axis options. Instead of locking the y-axis to 0–100%, the axis fits the actual data range with clean tick intervals, so charts dominated by small percentages are much easier to read.

The toggle works with both single and multiple y-axis configurations and accounts for comparison-period data when calculating the range. It's off by default — flip it on per widget when you want the tighter view.