Get Run Audio Url
Mint a fresh playback URL for one audio output of a run.
`audio_id` is the stable 16-hex output identifier embedded in run-data
card ids and carried by assistant chat `audio` parts. Presigned playback
URLs expire after 15 minutes; call this endpoint at play time to refresh
the URL by id instead of caching it or re-fetching a whole run-data page.
Returns 404 when the run has no s3-backed audio output with this id.
Authentication
AuthorizationBearer
Clerk JWT token
OR
AuthorizationBearer
Onepin live API key (op_live_...). Test and public keys are reserved in Phase 1.
Path parameters
workflow_id
run_id
audio_id
Headers
X-Workspace-Id
Response
Successful Response
data
meta
Errors
404
Not Found Error
422
Unprocessable Entity Error

