Function insert_sql_outcome 

pub fn insert_sql_outcome(
    conn: &Connection,
    key: &str,
    result: &str,
    run_id: Option<&str>,
    request: Option<&str>,
    created_at: i64,
) -> Result<(), BookkeepingError>

Insert one outcome row inside the caller’s open transaction (co-transactional with the effects it records). created_at is the host’s now_millis() — this module reads no clock.