ci: exclude Microsoft Store & VS Code links from lychee link check

[sbryngelson]

Problem

The Build & Verify job's Lychee link check (docs.yml → .lychee.toml) fails on three external links in documentation/getting-started.html that return 403 Forbidden to automated requests:

• https://apps.microsoft.com/store/detail/ubuntu/9PDXGNCFSCZV
• https://apps.microsoft.com/store/detail/windows-terminal/9N0DX20HK701
• https://code.visualstudio.com/

These are live, correct links — the Microsoft Store and VS Code sites simply bot-block the checker (a common link-checker false positive). The failure is unrelated to the doc content and recurs on every run.

Fix

Add the two hosts to the existing exclude list in .lychee.toml, following the file's established pattern of host-specific excludes with an explanatory comment (as already done for olcf.ornl.gov → 503, sc22.supercomputing.org → 415, etc.).

Targeted host excludes are preferred over globally accepting 403 (which would mask genuinely dead links elsewhere in the docs).

[Copilot]

Pull request overview

Note

Copilot couldn't run its full agentic review because no GitHub Actions runner was available. Make sure your repository has a runner available to run Copilot's review, or add a copilot-setup-steps.yml file specifying one with the runs-on attribute. See the docs for more details.

Updates Lychee configuration to avoid CI failures caused by bot-blocked (403) but valid external links (Microsoft Store and VS Code).

Changes:

• Add apps.microsoft.com to the Lychee exclude list to bypass Microsoft Store 403 responses.
• Add code.visualstudio.com to the Lychee exclude list to bypass VS Code site 403 responses.