Research-backed fixes for macOS tool installations:
**taplo**: Now uses `brew install taplo` (available in Homebrew!)
- No longer requires cargo/rustup
- Source: https://formulae.brew.sh/formula/taplo
**swiftlint**: Added Xcode CLI tools check
- Shows helpful message if xcode-select not configured
- Source: https://github.com/realm/SwiftLint/issues/5254
**rubocop**: Direct gem --user-install in macOS installer
- Checks ~/.gem/ruby/*/bin for installed binary
- Source: https://www.rubyonmac.dev/
**perlcritic**: Try cpanm first (installs it if missing)
- cpanm is much faster and more reliable than cpan
- Falls back to brew perl-critic
**codenarc**: Marked as skip (requires SDKMAN/Gradle)
- No automated install possible
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>