fix(mood): full-saturate the time-of-day chart and mood calendar

The v1.19.0 saturation fix missed two surfaces: the mood-by-time-of-day
bars and the mood calendar still rendered populated values at 0.55
opacity, reading as a dimmed glitch. Drop the dimming on populated bars
and cells (and the legend swatches); keep the quiet tint only on the
no-data empty state.

src/components/charts/mood-heatmap.tsx

@@ -271,7 +271,10 @@ export function MoodHeatmap({
                 height={cellSize}
                 rx={2}
                 fill={cell.color}
-                fillOpacity={cell.cell ? 0.55 : 1}
+                // v1.19.1 — populated days render at full saturation so the
+                // mood band reads clearly; only the no-entry cells stay the
+                // quiet `--secondary` empty-state tint.
+                fillOpacity={1}
                 className="cursor-pointer"
                 onPointerEnter={(e) => {
                   if (e.pointerType === "touch") return;
@@ -331,7 +334,7 @@ export function MoodHeatmap({
           <span key={label} className="flex items-center gap-1">
             <div
               className="h-3 w-3 rounded-sm"
-              style={{ backgroundColor: color, opacity: 0.55 }}
+              style={{ backgroundColor: color }}
             />
             {label}
           </span>