Introduces a new feature to fetch, parse, and display app release notes
and update highlights directly within the UI.
- Backend: Adds the `release-notes` module to fetch GitHub releases
and parse markdown highlight sections.
- Frontend: Adds the `WhatsNew` dialog and view, including custom
markdown rendering and an image lightbox for update media.
- Tools: Adds validation scripts (`whats-new-lint`, `whats-new-preview`)
to ensure release content parses correctly before publication.
The previous hardcoded AUTHOR_MAP was incomplete and caused missing authors
in the generated release notes. The config now attempts to fetch actual
GitHub usernames associated with commit SHAs using the GitHub API,
falling back to local git log author names if the API request fails.
Use a single semantic-release config to avoid diverging behavior, and update the release notes context logic to map authors with full commit hashes and stable issue URLs.
neon