Function handleMouseMove

frontend/src/components/Layout/SplitView.tsx:14–23

(e: React.MouseEvent)

  };

  const handleMouseMove = (e: React.MouseEvent) => {
    if (!isDragging) return;
    
    const container = e.currentTarget;
    const rect = container.getBoundingClientRect();
    const x = e.clientX - rect.left;
    const percentage = (x / rect.width) * 100;
    
    setSplitPosition(Math.min(Math.max(percentage, 20), 80));
  };

  const handleMouseUp = () => {
    setIsDragging(false);