Create the foundational infrastructure for the central Rover metadata store. This includes renaming the common package to core, implementing the central directory structure ($HOME/.rover/{config,data,cache}), and building the project registry and data management libraries.

This task establishes the foundation that the Custom Workflows and Central Metadata Store CLI integration tasks depend on.

Details

The central directory structure follows XDG-like conventions:

• macOS/Linux: $HOME/.rover/{config,data,cache}
• Windows: $HOME/AppData/{Roaming/Rover/Config,Local/Rover/Data,Local/Rover/Cache}

Key components:

• Project registry in $HOME/.rover/config/rover.json
• Project data in $HOME/.rover/data/projects/<uuid>/
• Configuration hierarchy: project config → global config → auto-discovery