PASS — independent read-only review of the topic control and source seam only.

Native checkbox chips preserve optional0–3, incoming order for text-only changes, no-op selection identity, existing canonical TOPICS order only on a real toggle, disabled/UNKNOWN guards and consent invalidation. Fieldset/legend, associated labels, visible marks, wrapping and focus outline are specified. No blocking static UX/seam finding.

Implement ONLY edit-topic control/local styles/meaningful Composer tests. Prototype two-step preview, dirty-close, lab controls, status and original-game wording are inherited fixture context, not authority to alter actual ensurePreview/audience/nativeclose or selected-owner flow. Preserve create single-control and all existing server/packet fences.

Actual browser/geometry review remains Root-owned and pending; this is not appsource QA, implementation admission, DEV or Owner UAT. Six native hashes and actual observed gpt-6-astra/high terminal are bound in adjacent JSON. No source/design files changed, no experiment/model call.