Review archived or unavailable theme repositories

[github-actions]

Monthly Theme Repository Audit

Checked at: 2026-09-01T08:44:45.588Z

This PR was generated automatically for maintainer review.

• Published repositories that still exist but are archived are moved to the public archive as unsupported themes.
• Published or archived repositories that no longer exist or are inaccessible are removed from the catalog.

Proposed Removals

• GruvFox by Alfarex2019 (gruvfox-by-alfarex2019)
  • Repository: https://github.com/FirefoxCSSThemers/GruvFox
  • Current status: published
  • Details: Repository returned 404; it may have been deleted, moved, or made private.
• Natura for Firefox (natura-for-firefox)
  • Repository: https://github.com/firefoxcssthemers/natura-for-firefox
  • Current status: published
  • Details: Repository returned 404; it may have been deleted, moved, or made private.

Merging this PR will update the published hub and archive according to the reviewed changes.