Two silent-auth-failure paths from #36098 (also #66125):
- the local-URL guard only escaped the 'local' placeholder when the
HOST BLOCK had apiKey. A top-level apiKey in honcho.json — explicit
user intent, and what 'hermes honcho setup' writes for single-host
configs — was dropped on the floor, so AUTH_USE_AUTH self-hosts
401'd on every request. Now any explicit key in honcho.json (host
block or top level) is honored; only env-sourced keys are still
treated as likely-cloud and skipped for local URLs.
- named-profile host blocks do not inherit the default host's apiKey
(credential isolation is by design), but the failure was silent:
the profile ran unauthenticated and every tool said 'no context'.
Affirm isolation and warn loudly at config-resolution time instead,
the outcome #66125 proposed if inheritance is rejected.
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