Improve Node Highlighting for Parent-Child Relationships

[monsieurBoutte]

When selecting a node with children, its descendants and the connecting lines should be visually distinguished to make it clear which nodes are connected. This could be achieved through affordances such as color changes, bold outlines, or animations to enhance readability and navigation.

• Highlight all descendant nodes when a parent node is selected.
• Apply a distinct style (e.g., color change, glow, or dashed lines) to connecting edges.
• Consider adding collapsable nodes with an animation effect whole expanding/collapsing nodes to improve visibility.