update heatmap settings in spectrum

src/renderer/components/ScopeModule.tsx

@@ -83,6 +83,7 @@ export function scopeSettingsToOptions(
         tiltDbPerOctave: s.tiltDbPerOctave,
         heatmapFill: s.heatmap,
         heatmapTiltDbPerOctave: s.heatmapTiltDbPerOctave,
+        heatmapSmoothing: s.heatmapSmoothing,
         showGrid: s.showGrid,
         fillGradient: s.fillGradient,
         smoothing: s.smoothing,

src/renderer/components/ScopeSettingsSection.tsx

@@ -264,6 +264,18 @@ export default function ScopeSettingsSection({
                 onChange={(value) => onUpdate('spectrum', { heatmapTiltDbPerOctave: value })}
               />
 
+              <RangeControl
+                label="Heat Smoothing"
+                value={current.heatmapSmoothing}
+                valueLabel={current.heatmapSmoothing.toFixed(2)}
+                min={0}
+                max={0.99}
+                step={0.01}
+                fullWidth={false}
+                disabled={!current.heatmap}
+                onChange={(value) => onUpdate('spectrum', { heatmapSmoothing: value })}
+              />
+
               <RangeControl
                 label="Smoothing"
                 value={current.smoothing}