[dooleydevin]

Uses pre-commit-hooks tooling to handle linting of trailing whitespace and consistent newlines at the end of files. Uses dos2unix to normalize CRLF line endings while preserving literal carriage returns in gitignore patterns.

[Copilot]

🟡 Changes recommended

The new required formatting workflow cannot pass because existing repository files have mixed line endings, trailing whitespace, and a missing final newline.

1 open issue

• Normalize existing gitignore files to pass the required formatter check · New

What changed in this PR

Adds a GitHub Actions workflow to lint all tracked .gitignore files for consistent line endings, trailing whitespace, and final newlines.

Changes:

• Runs formatting checks on pull requests and manual dispatches.
• Pins the GitHub Actions and pre-commit-hooks versions.
• Recursively discovers tracked .gitignore files and reports formatter-generated diffs when checks fail.

File	Description
.github/​workflows/​gitignore-formatting.yml	Adds a GitHub Actions workflow that runs pinned formatting checks on all tracked .gitignore files and reports failures with the resulting diff.

_{Review effort: Lite (dynamic)}