The rewrap handle took the drag target from the pointer's current position.
egui only reports drag_started() once the pointer has moved 6 points (or the
button was held 0.8 s), so a quick outward flick had already left the 7x14 px
handle and the drag was ignored. Resolve the target from press_origin(), as
prepare.rs does, before the hover early-return.
Also: the left edge rewraps too (width plus an x offset), and edge grips span
the box's full height, 6 px either side of the edge.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
