fix(lab): stream synchronized replay fragments

apps/control-station/src/workspaces/laboratory/M4ReplayThreatVisual.tsx

@@ -117,7 +117,9 @@ export function M4ReplayThreatVisual({
     startSeconds: metadata.timeline.timelineStartSeconds,
     endSeconds: metadata.timeline.timelineEndSeconds,
   }) : null, [metadata.timeline]);
-  const playbackController = useRecordedEvidencePlayback(playbackRange);
+  const playbackController = useRecordedEvidencePlayback(playbackRange, {
+    clock: mediaMode === "video" ? "external" : "animation",
+  });
   const timelineFrame = useM4ThreatTimelineFrame({
     resultId,
     timeline: metadata.timeline,
@@ -521,6 +523,9 @@ export function M4ReplayThreatVisual({
                 semanticOverlay={mediaMode === "video" ? semanticOverlay : undefined}
                 ariaLabel={`M4.6 recorded-realtime frame ${frame?.sequence ?? 0}: ${activeBoxes.length} proposals`}
                 interactive={false}
+                segmentSequence={frame ? frame.sequence + 1 : undefined}
+                segmentCount={timeline.frameCount}
+                onPlaybackChange={playbackController.synchronize}
               />
             ) : videoError ? (
               <SpatialState message={videoError} />