Traverses the full primary chain and all merge branches. Checks hash linkage at every node including artifact content. This is the auditor's endpoint.
Every published CU header is POSTed to active targets. No artifact content is echoed. Failures are logged as audit-event CUs.
Unified diff between any two text-class CU artifacts (text, code, voice-transcript).
Merge two diverged chains. Text-class artifacts only. Clean merge emits a merge CU automatically. Conflicts return marked content for human resolution.