Ink's focusNext returns `findNextFocusable(...) ?? firstFocusableId` (App.tsx:455-487),
so it ALWAYS reassigns activeId — to the next active, the first active, or undefined
when NO focusable is active. vue's focusNext/focusPrevious only did `if (next)
setActive(next)`, so when no focusable was active (reachable via focus(id) pinning an
isActive=false item) the stale activeId was left in place.
Call setActive(findNextActive(...)) unconditionally — a null result now clears the
stale activeId (and fires the blur notification Ink also fires), matching Ink. Normal
Tab cycling among active items is unchanged (findNextActive already wraps to the
first/last active, equivalent to Ink's `next ?? first`). The focusables.length===0
guard is kept (activeId is already null at 0 focusables via remove(), and it avoids a
%0 in the wrap arithmetic).
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Yunfei He
4de7f35b92