Update a creative brief

Replace this brief's editable content — name, description, angles, USPs, filming recommendations, dos/don'ts, inspiration videos — and its status. Set status: published to make it shareable (its URL is then available from GET /creative-briefs/published-url), or archived to retire it.

This is a replace: the stored document is rebuilt from the body, so send the whole brief back with your edits, not just changed fields.

Two things happen automatically on save: inspiration videos missing key_points get them AI-generated from that video's analysis, and videos missing an orders count have it filled from our attribution data. Idempotency-Key is optional here (a replace is naturally repeatable); X-Dry-Run: true validates without writing.