chore(release): v0.3.0

[hyamero]

Releases 0.3.0 to npm latest. Merge with a merge commit.

• feat(viewer): selecting a card keeps it and its direct neighbours lit and dims the rest. Hovering a legend type shows only that type. The canvas title card is gone and the diagram icon is in the header. H hides the toolbar outside focus mode too. The collapsed inspector is compact and the gap beside it is tighter.
• docs(site): the embedded viewer matches the viewer. The viewer docs, key reference and landing copy describe the new behaviour.
• docs: the README Explore line is updated.
• test(viewer): visual baselines are refreshed.

[vercel]

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Project	Deployment	Actions	Updated
stackmap-site	Ready	Preview	Oct 3, 2026 3:20am UTC

[github-actions]

🎉 This PR is included in version 0.3.0-rc.1 🎉

The release is available on:

• v0.3.0-rc.1
• GitHub release

Your semantic-release bot 📦🚀

[github-actions]

🎉 This PR is included in version 0.3.0 🎉

The release is available on:

• v0.3.0
• GitHub release

Your semantic-release bot 📦🚀