DP-50 Align v0.4.2 release readiness

[StiensWout]

Summary

• align all workspace and public package release metadata to 0.4.2
• refresh the checkout demo SVG provenance for the 0.4.2 runtime version
• verify package readiness and release dry-run for all 8 public packages

Validation

• npm run check:release-version -- 0.4.2
• npm run check:release-version
• npm run build
• npm test
• npm --workspace website run build
• npm --workspace website run test
• npm run generate:schema && git diff --exit-code -- schema/diagramspec-v1.schema.json
• npm run check:package-readiness
• npm run check:package-size-budgets
• RELEASE_PUBLISH_VERSION=0.4.2 RELEASE_DIST_TAG=latest node scripts/publish-release-packages.mjs --mode dry-run
• npm run audit:fallow
• npm run audit:fallow:changed
• git diff --check

Linear: DP-50

[linear-code]

DP-50

[vercel]

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Project	Deployment	Actions	Updated (UTC)
diagram-pilot-website	Ready	Preview, Comment	Jun 15, 2026 1:22pm