- Fixed root `cli --help` startup by preventing the config/model-registry initialization cycle.
- Extracted config validation, migration, and loading logic from config.ts into config/config-file.ts.
- Added ConfigFile helpers for migration, validated JSON/JSONC/YAML loading, status caching, and reset.
- Added a regression test that runs `cli.ts --help` with temp HOME/XDG env paths and expects exit code 0.
can1357