0.9.1-alpha.28

Patch Changes

• b44037c: feat(radio): the v1 Radio — the Checkbox in a circle, with one rule changed

  The ninth entry of the core. Same anatomy, same three levels on the same field* tokens, same four boxes so a radio and a checkbox in one form line up — and a press selects, it never clears. A set of options has no "none of these" unless one of them says so, so onSelectedChange fires with true only, and pressing the chosen option fires nothing at all.

  There is no group: RadioGroup is a P5 component with a context of its own, not a prop this one is missing. A set is a useState and a map over isSelected={value === option}, inside a View with accessibilityRole="radiogroup" — three lines the group component will replace rather than undo. The legacy RadioGroup and its shared props are named in the migration table, so nobody discovers the gap at merge time.

  SelectionFill moves into system/: the fill that fades and grows in with the mark riding on it was the Checkbox's, and this is its second use — §2 bis says extract there. The Checkbox's indicator now renders it too, which is thirty lines it no longer owns.

  Radio.IndicatorThumb has no counterpart here: the dot is the indicator's default child, replaced by writing children, which is the same escape hatch with one component fewer.

  No xs, matching the Checkbox. That circle was 16 points across with a 7pt dot, and a target that small is read rather than aimed at — the touch target is the row anyway, so shrinking the circle buys nothing a caller can press. The two components pair in the same form, so they offer the same three sizes or a caller finds the difference the hard way.