Function watch_build 

pub async fn watch_build(
    client: &HarmontClient,
    log_base: &str,
    org: &str,
    pipeline: &str,
    number: i64,
    tx: Sender<BuildEvent>,
) -> Result<i32>

Watch build #number until terminal, emitting BuildEvents on tx.

log_base is the host serving the SSE log stream (the API base in prod). Returns the terminal exit code via [exit_code_for_state]: 0 passed, 130 canceled, 1 otherwise.

Errors

Returns an error if any SDK call fails (build status poll, job list, or log token fetch). A dropped receiver (tx) is treated as a clean early exit (Ok(1)) — not an error.