Add markdown link verification for PRs by TravisEz13 · Pull Request #26219 · PowerShell/PowerShell

- Implement Parse-ChangelogLinks.ps1 to parse markdown files and extract links.
- Create Verify-MarkdownLinks.ps1 to verify the accessibility of extracted links.
- Define action.yml for the markdown link verification action with necessary inputs and outputs.
- Add README.md to document usage and features of the markdown link verification action.
- Set up verify-markdown-links.yml workflow to automate link verification on push and pull request events.

… error handling and retry logic

… in pull requests and pushes

…403, 429) and improve error reporting for failed links

…trying with GET for specific status codes (404, 405)

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: xtqqczze <45661989+xtqqczze@users.noreply.github.com>

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: xtqqczze <45661989+xtqqczze@users.noreply.github.com>

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: xtqqczze <45661989+xtqqczze@users.noreply.github.com>

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: xtqqczze <45661989+xtqqczze@users.noreply.github.com>

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: xtqqczze <45661989+xtqqczze@users.noreply.github.com>

… events

The `Verify Markdown Links` workflow declares four triggers but
`get-changed-files` only handles `pull_request` and `push`, causing every
weekly Sunday cron run to fail with "Unsupported event type: schedule"
since PR PowerShell#26219 (October 2025).

Add a code path that uses the GitHub Trees API to enumerate all repository
files for `schedule` and `workflow_dispatch` events, then feeds them
through the existing filter and output logic. Update the markdownlinks
action to pass the new event types.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>