Function submit_cached_keep_wire 

pub async fn submit_cached_keep_wire(
    backend: &BackendConn,
    quote_market_type: u8,
    wire_with_timer_sub_1: Vec<u8>,
) -> Result<i32, QotSubError>

Submit one immutable cached keep request.

The caller supplies the exact last normal wire with only top-level timer_sub=1 changed. This path deliberately has no normal-dispatch hooks, so keep cannot publish a new receipt or mutate normal eligibility state.