Explanation:
Purpose:
Read-only check that the configured Deepline host answers. Needs no API
key; --play-runner does.
When:
Only when a command cannot reach the server, or with --play-runner to prove
the whole play execution plane works.
Input:
No arguments. --play-runner runs a tiny no-provider play end to end.
Output:
Text: "<host>: <status>", then any service notice. --json: the server
health object plus status_banner (null when there is no notice). With
--play-runner,
{status, playRunner: {status, check}}. An unreachable host exits nonzero
with "Cannot reach Deepline API: <reason>".
Cost:
Free. --play-runner uses no providers.
Avoid:
Do not use health to check auth or balance; use auth status or billing
balance.