Function acb_graph_get_unit_stability 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn acb_graph_get_unit_stability(
    graph: *mut c_void,
    unit_id: u64,
) -> f32

Get a unit’s stability score. Returns -1.0 if not found.

Safety

graph must be a valid, non-null handle from acb_graph_open.