The repository had both uppercase (e.g., docs/User-Guide/) and lowercase
(e.g., docs/user-guide/) paths tracked, causing persistent dirty state
on case-insensitive filesystems (macOS, Windows).
This commit removes the uppercase variants and keeps only lowercase paths,
which is the conventional standard for documentation directories.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
