2026/10/16 Fixed 5 issues including an issue where label colors could not be changed

The following 5 issues have been fixed.

• Even when selecting a label color such as "Indigo," the color sometimes did not change; it will now change to the selected color.
• The node insertion menu opened from the "+" on an edge did not close when clicking on the canvas margin or other areas; it will now close properly.
• When the screen width was changed while a label was open for editing, the position of the editing field would remain misaligned; it will now move to fit the screen.
• It was sometimes not possible to start drawing a line from a connection point that another line was crossing; this is now possible.
• In Swimlane, the lines of collapsed branches sometimes overlapped with nodes or passed outside the lane; they will now avoid nodes and pass within the lane.