@@ -1,3 +1,9 @@
+## v1.3.38
+
+**Sparklines, optional shared scale**
+
+- New optional config `sparkline_shared_scale` (default `false`): when `true`, the four 24h sparklines normalise to one common peak across solar/load/grid/battery, so their heights are comparable and a near-zero grid renders as a low flat line instead of a full-height wave
+- Default behaviour unchanged — each sparkline still auto-scales to its own peak, which keeps each shape legible for reading patterns
 ## v1.3.37
 
 **Self-sufficiency donut, redesign**