The focused rectangle or text shows 44 px handles on its focus band: corners,
and the middles of long enough sides; on an item smaller than two targets only
the bottom right one, outside its corner. A text gets a grip above its top
left corner, since its middle is the field typed into. The three-dot button
moves above the top right corner; grip and button step aside at the surface's
edge. A tap on a handle is one on what lies under it, a long press opens the
menu, a second finger zooms. WebKit hands a tap's end to the handle despite
the capture, so the handle passes its events on.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>