dual-boot

When invoked via `/dual-boot`, follow the setup workflow in `workflows/setup-workflow.md` to set up dual-boot for this project. If the user provides version arguments (e.g. `/dual-boot 7.0 7.1`), use them as the current and target versions. If no arguments are provided, detect the current version from the Gemfile and ask the user for the target version.

# Dual-Boot Skill

- **Purpose:** Set up and manage dual-boot environments for Rails, Ruby, or core Gemfile dependencies using the `next_rails` gem
- **Key Gem:** [next_rails](https://github.com/fastruby/next_rails)