`_runtime_credentials_ready()` collapsed "nothing is configured" and "the
configured credential is unusable right now" into one False, so a profile
whose only Nous credential was benched by a failed refresh (or quarantined
DEAD) was told "No inference provider is configured yet" and offered the
provider picker — re-running setup on an OAuth provider with single-use
refresh tokens can rotate the grant away from the session that was working
(#113720).
The readiness probe now returns the resolver's exception too
(`_probe_runtime_credentials`). At CLI startup only the resolver's
`no_provider_configured` verdict reaches the wizard; any other failure is
explained by `_explain_unusable_credentials`: `format_auth_error(exc)`
plus, from the provider's pool, "cooling down ... re-enters rotation in
about Nm" or "sign-in was lost (<reason>); run `hermes auth add <provider>`".
An actually-empty profile still gets the wizard.
Fixes#113720
Supersedes #113732 (@whyyagswhy): its `_inventory_other_providers()` gate
returns False for a Nous-configured profile, so the reported Nous case would
still have reached the wizard, and it printed no reason.
Co-authored-by: Yagna Vudathu <yagnavudathu@gmail.com>
Co-authored-by: ahrazzle <ahrazzle@users.noreply.github.com>
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