- auth status shows every known provider with config/keyring/env status
- auth status --provider <id> shows detailed single-provider info
- auth list now probes keyring for all providers (was only active)
- /logout clears only the active provider's key (was clearing all)
- add clear_active_provider_api_key for scoped TOML key removal
- add Huggingface to ProviderArg enum
- add auth status tests for all-provider and scoped views
Fixes#2716
Hunter Bown
5719301d1e