Add generated .pi-map.md and .pi-map.index.md files across the repository
so the project navigation maps are shared and versioned. These artifacts
are maintained by project_map_init/patch/validate and must be kept in
sync with source edits.
Note: .cache/ remains ignored (added in previous commit).
- API documentation for config profiles with git mounts endpoint details
- User guide for using git repositories in config profiles
- Document branch pinning, glob patterns, error handling, and best practices
- Update API README to link to new config-profiles documentation