fix: release layout style 3.0.2

[Foscat]

Summary

• align App Shell row tracks with base, responsive, and personality-specific area topologies
• make compact section spacing and public Wrapper gutter tokens effective
• synchronize 3.0.2 package, demo, Pages, documentation, and immutable ecosystem release metadata
• update the dev-only nanoid override to 3.3.18 for a zero-vulnerability release audit

Verification

• full Chromium, Firefox, and WebKit demo matrices
• static, ownership, manifest, package, release, and Pages contracts
• current and minimum clean-install ecosystem matrices with zero-diff snapshots
• npm audit --audit-level=moderate
• npm publish --dry-run --access public --ignore-scripts