Angular's board search results expansion shows [Купить] [Онлайн
регистрация] [Детали рейса]. React only rendered Details. Added a
`renderActions` prop on FlightCard/FlightList so the feature layer
can inject extra buttons without the ui layer importing from
features. OnlineBoardSearchPage wires it to FlightActions with
showShare=false (the row already has a dedicated share icon).
Visibility rules fall through to canBuyTicket / canRegister (same
as BoardDetailsHeader), so cancelled/past flights still hide the
Buy button and carriers without a registrationUrl still hide the
Online Registration button — matching Angular's per-flight gating.
Integration test mocks useAppSettings to avoid requiring the real
ApiClientProvider in flight-search.test.tsx.
gnezim
9ff034d19f