wanghai-tech / hikoon-ACR

Keep the new ACR architecture guide clean for follow-up edits

Constraint: The documentation refactor was already pushed and only needed a formatting-only hygiene follow-up
Rejected: leaving known markdown whitespace debt in the freshly introduced guide | would add avoidable noise to future reviews
Confidence: high
Scope-risk: narrow
Directive: keep the new role-oriented architecture docs diff-clean so future schema/model edits stay reviewable
Tested: git diff --check on docs/acr-architecture.md
Not-tested: content semantics unchanged; no runtime effects