What problem does it solve? Setting up a BMad module requires manually writing configuration files, registering help entries, and migrating legacy per-module configs, which is error-prone and leaves stale values behind. ## Core Features & Use Cases - Config Merging: Writes core settings and module-specific values into _bmad/config.yaml and user-only settings into config.user.yaml using an anti-zombie pattern that removes stale entries. - Legacy Migration: Detects old per-module config files, uses their values as fallback defaults, and cleans up legacy directories after verifying skills are installed. - Help Registration: Merges module capability entries into a shared module-help.csv for the help system. - Use Case: A user says "install bmb module" and the Skill collects preferences, writes both config files, registers help entries, creates output directories, and removes installer leftovers. ## Quick Start Ask the assistant to install and configure the BMad Builder module in your project.