086dc8b880
An init-time HonchoAuthError discarded the manager that recorded it, so context/hybrid prefetch returned nothing and tools mode returned the generic init error. The provider now keeps the failure detail across the manager discard, prefetch emits the one-time notice at the readiness guard, tools mode returns an explicit authentication error, and a successful re-login retry clears the stored failure. Non-auth init failures keep failing open with no notice.