Function handleEventToggle

frontend/src/components/timeline/EventInspector.tsx:270–291

(event: TimelineEvent, hasExpandableContent: boolean)

  };

  const handleEventToggle = (event: TimelineEvent, hasExpandableContent: boolean) => {
    if (!hasExpandableContent) return;

    if (event.nodeId) {
      selectNode(event.nodeId);
    }
    selectEvent(event.id);
    seek(event.offsetMs);

    // Disable auto-scroll when user manually selects an event
    autoScrollRef.current = false;

    setExpandedEvents((prev) => {
      const next = new Set(prev);
      if (next.has(event.id)) {
        next.delete(event.id);
      } else {
        next.add(event.id);
      }
      return next;
    });
  };

  const openFullMessageModal = (message: string, event: TimelineEvent) => {
    setFullMessageModal({