agent_not_published
Launch, ad-hoc call, or test call refused: the agent has no published version to pin. Drafts are never DIALED. (Since migration 0065 the browser voice session no longer raises this - an unpublished agent mints a browser_draft session instead, because the workshop hearing its own draft dials no one.)
Problem shape
Every non-2xx response is an RFC 9457 application/problem+json body. The type URI below is stable and machine-matchable, so branch on the final path segment (the code) and treat the status as redundant confirmation. See the error-handling guide.
{
"type": "https://docs.vocapable.com/errors/agent_not_published",
"title": "…",
"status": 409,
"detail": "…",
"instance": "/v1/…"
}