Codeben: https://cdpn.io/enalean/debug/64e8b185e427659400a44ec1034cbe8b
Everybody can collapse a swimlane:
- Only the xref and title of the corresponding card is displayed.
- Children are hidden.
A collapsed swimlane can be expanded to retrieve a full display.
The status expanded/collapsed is not stored anywhere.
When a swimlane is loaded, if the card has status closed (as per the semantic status), then the swimlane is automatically collapsed. In this situation, children of the swimlane are not loaded. They will be loaded when expanding the swimlane.