Function install_handler_into 

pub fn install_handler_into(
    edges: &SharedEdges,
    pause: &'static str,
    restart: &'static str,
    confirm: &'static str,
)

Install only the action handler into long-lived edges. The map itself is process-global (install_map, called alongside); pushing a scoped map per frame would leak a scope entry per frame and re-root resolve_action ordering.