fix: stop shifting sparkline when complete

Author: asuzuki-jumptrading

src/features/Overview/SlotPerformance/useTileSparkline.ts

@@ -250,6 +250,8 @@ export function useScaledDataPoints({
     }
     // live
     else {
+      if (stopShifting) return;
+
       if (!clocks.has(tickMs)) {
         clocks.set(tickMs, createClock(tickMs));
       }
@@ -262,7 +264,15 @@ export function useScaledDataPoints({
         return unsub;
       }
     }
-  }, [height, normalizedHistory, isStatic, tickMs, width, windowMs]);
+  }, [
+    height,
+    normalizedHistory,
+    isStatic,
+    tickMs,
+    width,
+    windowMs,
+    stopShifting,
+  ]);
 
   return {
     scaledDataPoints,

src/features/StartupProgress/Firedancer/Snapshot/SnapshotSparklineCard.tsx

@@ -41,7 +41,8 @@ export default function SnapshotSparklineCard({
     tileCount: tileCounts[tileType],
     liveIdlePerTile: timers?.[tileType],
   });
-  const avgBusy = useLastDefinedValue(currentAvgBusy);
+  const lastDefinedAvgBusy = useLastDefinedValue(currentAvgBusy);
+  const avgBusy = isComplete ? currentAvgBusy : lastDefinedAvgBusy;
 
   const { scaledDataPoints, range, pxPerTick, chartTickMs, isLive } =
     useScaledDataPoints({