Struct focusFlags

internal/spawner/spawner_test.go:408–410

focusFlags bundles per-backend "was called" flags so the focus routing tests can assert which backend FocusSession dispatched to without an awkward multi-return-value tuple.

// routing tests can assert which backend FocusSession dispatched to
// without an awkward multi-return-value tuple.
type focusFlags struct {
	iterm, terminal, zellij, kitty *bool
}

// stubAllFocusBackends replaces the per-backend PSRunner / RunnerOutput
// vars with stubs that flip a bool when the backend's FocusSession