feat: graphs now properly sized + port static graphs to c++

Modules/Dashboard/Processes/SystemInfo.qml

@@ -101,6 +101,7 @@ orientation: Qt.Vertical
 						line1Color: card.accent
 						line1FillAlpha: 0.15
 						maxValue: 1.0
+						slideInterval: Config.dashboard.resourceUpdateInterval
 						slideProgress: 1
 
 						Connections {
@@ -114,9 +115,14 @@ orientation: Qt.Vertical
 						NumberAnimation {
 							id: slideAnim
 
+							// Only drives frames; the slide phase is the sample
+							// clock inside SparklineItem. It must not stop at the
+							// end of a cycle, or the newest value is held on the
+							// clipped edge until the next sample arrives.
 							duration: Config.dashboard.resourceUpdateInterval
 							easing.type: Easing.Linear
 							from: 0
+							loops: Animation.Infinite
 							property: "slideProgress"
 							target: sparkline
 							to: 1