The drag handle was attached only to the left sub-view of each row, so
grabbing the right half initiated no drag, and pointerdown on the branch
or project title raced the browser's text-selection start before
dnd-kit's activation threshold — often producing a text selection
instead of a drag.
Move dragHandleProps to the outer row wrapper, add userSelect: none to
the row styles, and tighten PointerSensor activation distance.