Investigate recurring Netlify deployment failures on merged PRs

## Summary

Several merged PRs are showing failed deployment checks after merge. The failures appear to be related to Netlify deployment validations, specifically:

* Header rules
* Redirect rules
* Pages changed
* deploy/netlify (Deploy Preview)

### Observed Behavior

The following checks are failing consistently:

Despite the PR being merged successfully, the deployment validations are not passing.

### Questions

* Why are Netlify header validation checks failing on merged PRs?
* Are there any invalid header configurations being generated during the build?
* Are redirect rules or _headers files being modified unintentionally by documentation changes?
* Is the failure related to markdown/documentation linting errors propagating to deployment validation?
* Is there any issue with the Netlify configuration or deployment pipeline itself?

### Expected Behavior

All deployment-related checks should pass for merged PRs unless there is a genuine configuration or build issue.

### Action Items

* Investigate Netlify deployment logs for failing PRs.
* Verify _headers and _redirects configurations.
* Check whether documentation-only changes are triggering deployment validation failures.
* Confirm if markdown linting/build validation is causing deployment failures.
* Identify whether this is a repository-wide issue affecting multiple merged PRs.