Old description was thin and only mentioned yarn_rm_url / auth_type
as the things to look up. That was written before we added
history_server_url and url_allowlist, and before fetch_url and
list_applications existed.
New description explicitly enumerates the connection fields an
agent is most likely to need (yarn_rm_url, history_server_url,
url_allowlist, auth_*, master/deploy_mode/spark_conf) and names
the tools that consume them (get_external_*, fetch_url,
list_applications, prepare_submit_job) so the LLM knows to call
get_connection first when it needs any of those.
Also adds a security note that the response includes secrets
(auth_password, auth_keytab) — the previous description didn't
warn about this.
Tests: 398 passed, no test changes (description text is not
asserted).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
