Check brand

1. Context: list_workspaces(), list_projects(workspace_id). Match the URL to a project, or let create_checklist find or create it.
2. Actor and rules:
   • list_actors(workspace_id), else create_actor(...) described as a meticulous brand and copy reviewer.
   • list_workspace_guidelines(workspace_id): if the standard exists, attach it with set_project_guideline(project_id, guideline_id) rather than typing a second copy. Otherwise add_project_guideline(project_id, category: "tone_of_voice" | "brand", content, title), one rule per guideline so a finding can name the rule it breaks. Guidelines reach every run, review, interview and triage for the project.
   • add_actor_knowledge is for what only this reviewer needs, not the standard itself.
   • No guidelines supplied: ask, or draft a short rule set from the strongest existing pages and confirm it before auditing.
3. One checklist per surface (default: homepage, one core flow, one high-traffic marketing page) with 4 to 8 reader-observable checks, e.g. "Headlines use sentence case", "Error messages state what happened and offer a next step". Actors see the rendered page, so never phrase checks by CSS or component names.
4. Run: run_checklist(checklist_id), poll get_checklist_run(run_id) until terminal, read evidence per check.
5. Report deviations grouped by page: the broken rule, the offending copy as evidence, and a suggested rewrite in the correct voice.
6. Standing coverage: offer create_workflow on a schedule or deploy trigger (see setup-guardrails).