conformance: per-surface lint architecture (editorconfig action + VS Code lint tasks)

[ptr727]

Converges Utilities onto the fleet lint architecture (ProjectTemplate #276). Utilities was already closest — CI on action wrappers, hook language-only — so this is the last two gaps:

• validate-task.yml: editorconfig-checker runs via docker run mstruebing/editorconfig-checker:latest (the doc linters run as pinned action wrappers; editorconfig-checker's action is install-only, so Docker runs it in one step).
• .vscode/tasks.json: add the Lint group (editorconfig, actionlint, markdownlint, cspell via Docker :latest, plus a "Lint: All") — the on-demand local doc-lint surface the repo was missing.
• .husky/pre-commit: add the language-only comment and the if guard (matches the fleet snippet; an absent dotnet exits 0 instead of aborting the commit).

cspell CI scope (README + HISTORY) left as-is. All linters pass locally.

🤖 Generated with Claude Code

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 66.89%. Comparing base (3909a89) to head (cff4ce1).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #401   +/-   ##
========================================
  Coverage    66.89%   66.89%           
========================================
  Files           13       13           
  Lines         1160     1160           
  Branches       108      108           
========================================
  Hits           776      776           
  Misses         338      338           
  Partials        46       46           

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[Copilot]

Pull request overview

Updates Utilities’ lint surfaces to match the fleet “per-surface” model by shifting EditorConfig line-ending checks to a pinned GitHub Action in CI, adding on-demand VS Code lint tasks for docs/workflows, and making the pre-commit hook language-only and non-blocking when dotnet is absent.

Changes:

• Switch CI EditorConfig line-ending checking from a docker run invocation to editorconfig-checker/action-editorconfig-checker.
• Add VS Code “Lint” tasks for line endings, workflows, Markdown, spelling, plus a “Lint: All” aggregator.
• Update Husky pre-commit hook to document “language-only” behavior and guard dotnet husky run behind a dotnet presence check.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
.vscode/tasks.json	Adds Docker-based lint tasks (line endings, actionlint, markdownlint, cspell) and a combined “Lint: All”.
.husky/pre-commit	Makes pre-commit hook language-only and no-op when dotnet is missing.
.github/workflows/validate-task.yml	Replaces EditorConfig docker lint with the action-based approach.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 5 comments.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated no new comments.

Comments suppressed due to low confidence (1)

.github/workflows/validate-task.yml:86

• The PR title/description claims editorconfig-checker was moved to an action wrapper, but this workflow is still running editorconfig-checker via docker run ... mstruebing/editorconfig-checker:latest. Either update the PR metadata to reflect the Docker-based approach, or change this step to use the intended action-based implementation so the code matches the stated purpose.

      - name: Check line endings step
        run: docker run --rm -v "$PWD":/check --workdir /check mstruebing/editorconfig-checker:latest

[Copilot]

Pull request overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.