feat: better notification storage and image caching + blobs

Plugins/ZShell/Components/sparklinecontent.hpp

@@ -32,6 +32,11 @@ class SparklineContent : public QQuickPaintedItem {
 
 	[[nodiscard]] qreal stepX() const;
 
+	protected:
+	// The stroke width, sample spacing and plot bounds are quantized in device
+	// pixels, so they have to be built with the ratio the window actually has.
+	void itemChange(ItemChange change, const ItemChangeData& value) override;
+
 	private:
 	struct LineGeometry {
 		QPainterPath stroke;
@@ -60,6 +65,7 @@ class SparklineContent : public QQuickPaintedItem {
 
 	qreal m_viewportW = 0.0;
 	qreal m_viewportH = 0.0;
+	qreal m_dpr = 1.0;
 
 	LineGeometry m_geom1;
 	LineGeometry m_geom2;