v0.4.1

Patch release after the mainwp-cli rename.

Changes:

• Updates README install/upgrade references to use mainwp-cli.
• Updates the mainwp-cli skill troubleshooting instructions to use brew upgrade mainwp-cli.
• Updates scripts/release.sh to operate on Formula/mainwp-cli.rb, uninstall mainwp-cli during --brew-test, and commit tap updates as mainwp-cli <version>.
• Updates the Homebrew tap README, formula comment, and audit workflow for the mainwp-cli formula name.

Validation:

• 61/61 smoke tests passing.
• ruby -c Formula/mainwp-cli.rb: OK.
• brew audit mainwp-cli: OK.

Install:

brew tap oscarhugopaz/mainwp-cli
brew install mainwp-cli
mainwp --version