[extension] Update DocGuard — CDD Enforcement to v0.28.0

[github-actions]

Updates the docguard community extension to v0.28.0.

Summary

• Updated version: 0.27.0 → 0.28.0
• Updated download_url to the v0.28.0 release asset
• Updated updated_at timestamp to 2026-06-23T00:00:00Z
• Preserved created_at, downloads, and stars from the existing entry
• No changes needed in docs/community/extensions.md (description, category, and effect are unchanged)

Validation Results

All checks passed:

• ✅ Extension ID docguard matches ^[a-z][a-z0-9-]*$
• ✅ Version 0.28.0 follows semver X.Y.Z
• ✅ Repository https://github.com/raccioly/docguard is public and accessible
• ✅ extension.yml present at extensions/spec-kit-docguard/extension.yml
• ✅ README.md present in repo
• ✅ LICENSE file present in repo
• ✅ GitHub release v0.28.0 exists with the correct asset spec-kit-docguard-v0.28.0.zip
• ✅ Download URL matches release asset
• ✅ All submission checklists checked

Closes #3106
cc @raccioly

Generated by 🧩 Add Community Extension from Issue Submission for issue #3106 · 279.8 AIC · ⌖ 16.3 AIC · ⊞ 32.9K · ◷

[Copilot]

Pull request overview

Updates the existing docguard entry in the community extensions catalog to reference the new upstream release (v0.28.0), keeping catalog metadata in sync with the extension’s published release assets.

Changes:

• Bumped docguard version from 0.27.0 to 0.28.0 and updated its download_url accordingly.
• Updated the docguard.updated_at timestamp and the catalog-level updated_at timestamp to 2026-06-23T00:00:00Z.

Show a summary per file

File	Description
extensions/catalog.community.json	Updates catalog and docguard entry version/URL and refreshes timestamps to reflect the new release.

Copilot's findings

Tip

Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

• Files reviewed: 1/1 changed files
• Comments generated: 0