- ArtifactGateWidget: gate modal 90%→70% of viewport, larger heading, more padding.
- ArtifactView StructuredValue: depth-aware hierarchy (top-level hairline dividers,
warm bg-muted card surfaces + shadow for object-array items).
- index.css: .thot-label micro-labels switched to the mono register (SF Mono) with
tightened tracking, distinguishing labels/meta from sans body prose.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>