feat: proposal for a changelog tab viewer

[Fupete]

PR Checklist

• My branch is up-to-date with the Upstream main branch.
• The unit tests pass locally with my changes (if applicable).
• I have added tests that prove my fix is effective or that my feature works (if applicable).
• I have added necessary documentation (if appropriate).

Short description of what this resolves:

Adds a changelog viewer to Storybook for easier tracking of component version history.

Changes proposed in this Pull Request:

• Custom changelog addon displaying component-specific CHANGELOG.md files in a dedicated panel
• Accordion UI matching Storybook's Accessibility addon style
• Features: collapsible versions, markdown parsing, keyboard navigation, ARIA support

Screenshot:

Technical details:

• Uses import.meta.glob to dynamically load component changelogs
• Custom React addon in .storybook/addons/changelog-tab.tsx
• Integrates with Changesets versioning system
• Note: Required adding React and React-DOM as devDependencies for the custom addon (Storybook manager context seems to require React components)

Notes for team review:

This is a custom addon approach. Alternative solutions might exist:

• Other Storybook changelog addons (e.g., storybook-addon-changelog-viewer seems incompatible with current Storybook version)
• Native Storybook documentation features
• MDX-based approaches
• ...

The React dependency addition is not ideal (?). Alternative implementations that avoid this would be worth exploring.

No rush—please review and discuss alternatives before merging. Team feedback welcome.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 56c8f6a

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Project	Deployment	Actions	Updated (UTC)
design-web-components	Ready	Preview	Feb 5, 2026 11:58am

[Fupete]

@astagi dai un'occhiata a questa idea.
@pnicolli occhiata ed idee più che benvenute anche da parte vs, ma per ora è solo una PR draft per ragionare noi se ha senso l'idea.

[Fupete]

Promemoria: valutare di fare in documentazione una scheda ad hoc Changelog più che un tab in ogni singola storia.

[Fupete]

@giuliaghisini (cc @pnicolli) rispetto alla discussione nello spreadsheet si intendeva changelog a livello componente. Qui già implementata come tab. @pnicolli proponeva invece di implementarla come schedina ultima nella documentazione del componente. Quello sarebbe l'alternativa da valutare. (cc @astagi)