Function stubPS

internal/app/do_test.go:23–30

stubPS replaces claude.PSRunner with a canned-output stub so the live-session guard in cmdDo can be exercised without touching the real process table. Replaces the legacy app-package `psRunner` override the test suite used before the harness refactor.

(t *testing.T, output string)

// live-session guard in cmdDo can be exercised without touching the
// real process table. Replaces the legacy app-package `psRunner`
// override the test suite used before the harness refactor.
func stubPS(t *testing.T, output string) {
	t.Helper()
	old := claude.PSRunner
	claude.PSRunner = func() ([]byte, error) {
		return []byte(output), nil
	}
	t.Cleanup(func() { claude.PSRunner = old })
}

// stubNewUUID pins claude.NewUUID to a fixed value for the duration