Draw the energy diagram on top of the solar overlays (#397)

With auto-rotation the sun disc, arc and irradiance label sweep over the day
curve and hide the readout you are trying to see. Raise the day-curve layers
above the solar layers (sun z 12, irradiance label z 13) so the diagram always
wins the overlap; near stays above far so the curve still self-occludes at its
crossings, and the detail panel (z 40) and timeline (z 1000) still sit above it.

Author: ReikanYsora

src/css/helios-card-scene-css.ts

@@ -260,8 +260,12 @@ export const heliosCardStyles = css`
         overflow: visible;
         pointer-events: none;
     }
-    .helios-day-curve-far  { z-index: 5;  }
-    .helios-day-curve-near { z-index: 11; }
+    /*  The energy diagram always reads ON TOP of the solar overlays (sun disc z 12, irradiance label z 13, arc, ray):
+        with auto-rotation the sun sweeps over the curve and hides the numbers you are trying to read, so the diagram
+        wins the overlap. Both halves clear the solar layers; near stays above far so the curve still self-occludes at
+        its side crossings. Detail panel (z 40) and timeline (z 1000) still sit above it. */
+    .helios-day-curve-far  { z-index: 14; }
+    .helios-day-curve-near { z-index: 15; }
 
     /*  Any chip with its day curve up: its second notch, pressed. The chip is an outline in the metric's colour on
         the card's background, so ON simply swaps the two - the universal switch language, outlined off / filled on.