Run the Markdown Linter on markdownlint-cli2 instead of Super Linter

.github/dependabot.yml

@@ -47,6 +47,12 @@ updates:
       # updated via `gh aw upgrade` / the Agentic Maintenance workflow instead.
       - dependency-name: "github/gh-aw-actions/*"
       - dependency-name: "github/gh-aw/actions/setup"
+      # DavidAnson/markdownlint-cli2-action pins the CLI version it bundles, and
+      # `.github/workflows/markdown-linter.md` installs that same version by hand so the
+      # scheduled report and the pull request gate apply identical rules. Dependabot can
+      # only see the action, so letting it bump alone would silently give the two different
+      # rule sets. Move both pins together, by hand, when updating the action.
+      - dependency-name: "DavidAnson/markdownlint-cli2-action"
     commit-message:
       prefix: '[main] '
     cooldown:

.github/workflows/README.md

@@ -312,7 +312,7 @@ so turning the check off would remove a security control that is working.
 | [`unskip-closed-tests.md`](./unskip-closed-tests.md) | Weekly + manual | Finds tests skipped via `[Ignore("…#issue")]` whose tracking issue is now closed, verifies they pass, and opens a PR re-enabling them. |
 | [`duplicate-code-detector.md`](./duplicate-code-detector.md) | Schedule + manual | Identifies duplicate code patterns and suggests refactoring opportunities. |
 | [`malicious-code-scan.md`](./malicious-code-scan.md) | Schedule + manual | Reviews code changes from the last 3 days for suspicious patterns indicating malicious or agentic threats. |
-| [`markdown-linter.md`](./markdown-linter.md) | Schedule + manual + issues | Runs Markdown quality checks using Super Linter and opens issues for violations. |
+| [`markdown-linter.md`](./markdown-linter.md) | Schedule + manual + issues | Runs Markdown quality checks using markdownlint-cli2 and opens issues for violations. |
 | [`link-checker.md`](./link-checker.md) | Daily | Daily automated link checker that finds and fixes broken links in documentation files. |
 | [`glossary-maintainer.md`](./glossary-maintainer.md) | Schedule + manual | Maintains and updates the documentation glossary based on codebase changes. |