An unattributed bottle, an unreachable orchestrator, and an unparseable
policy all become a deny-all Config, and a deny-all is indistinguishable
from "policy loaded, host not allowed" at the decision point — both are just
"no matching route". So every one of them reported `host X is not in the
bottle's egress.routes allowlist`, which reads as a config problem and sends
the operator hunting for a route that was never missing. Diagnosing a
bricked registration cost hours for exactly this reason.
Carry the structural reason on Config and prefer it in decide(). A genuine
allowlist miss — a policy that loaded and simply lacks the host — keeps the
original wording, so the message now tells the two cases apart.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
didericis
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