The divider between the stats dropdown head and body lived on
.stats-body's border-top, so it vanished when collapsed and only the
hover background hinted at the boundary (flicker). Move it to
.stats-head border-bottom so it is always present and spans the full
pill width.
- Pill now reads only 'Paste Created' (no combined 'Paste Created - Link Copied')
- Copy fallback toast now says 'Link Copied'
- Pill shrunk (smaller padding/font) and anchored tighter to the right side
Fixes#168