randy
b0576f3725
Drag: mousedown on a vertex circle calls event.preventDefault() (the documented way to opt a gesture out of MapLibre's own drag-to-pan), then a map-wide mousemove/mouseup follows the cursor and updates that point's coordinates live. Delete: clicking a vertex selects it (shown larger/yellow); Delete or Backspace removes it, guarded against eating a keystroke meant for an actual text input on the page. A vertex's own mousedown sets a one-shot flag so the same click doesn't also fall through to the generic map-click handler and add a brand new point on top of it.