v0.1.2

Patch release: rotate --version now reports the release version (was pinned at 0.1.0), so the Homebrew formula test passes and --version matches the installed tag. No functional change to rotation behavior.

brew install yangsi7/tap/rotate
# or
curl -fsSL https://raw.githubusercontent.com/yangsi7/rotate-env/v0.1.2/install.sh | bash