Problem

pnpm check:docs currently depends on a Unix-style pipeline in format:docs:check:

git ls-files 'docs/**/*.md' 'docs/**/*.mdx' 'README.md' | xargs oxfmt --check

That works in bash/Git Bash, but fails in native Windows PowerShell because xargs is not available by default.

Why It Matters

• Contributors on native Windows hit a tooling failure before any actual docs formatting is checked.
• This makes the repository appear less Windows-compatible than it really is.
• The repo already supports Windows in other areas, so shell-only docs tooling is an avoidable paper cut.

Repro

1. Open native PowerShell on Windows.
2. Run pnpm check:docs from the repository root.
3. Observe xargs is not recognized as an internal or external command.

Suggested Direction

Replace the shell pipeline with a shell-agnostic approach, for example:

• a small Node script that expands tracked docs files and invokes oxfmt
• or a package command that accepts file lists without requiring xargs

Acceptance Criteria

• pnpm check:docs succeeds in native PowerShell on Windows.
• The docs formatting check still runs correctly in bash/Linux/macOS.
• The contributor workflow does not require Git Bash just to validate docs formatting.