An enabled provider that is not the default and not the only route for any
configured routing (enabled profile simple/complex model, budget downgrade,
knowledge source embedding, with no fallback on another usable provider) is
optional. When it is unreachable its provider and model checks now report
DEGRADED with a message naming where requests go, instead of turning the
whole "assistant" component DOWN (central health rolls up worst-of; WARNING
severity does not cap DOWN). The default provider and sole routes stay DOWN.
Failed provider probes carry reachable=false so the circuit breaker still
refuses the provider when its central outcome is only DEGRADED.
New assistant_provider.setup_state (Active / Setting up, empty = Active):
a provider that is Setting up is never routed to (default, profile models,
fallbacks, budget downgrades, embeddings) and gets no provider or model
health checks. Additive guarded DDL in docs/schema-postgres.sql; see
UPGRADE.md.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
james.maesandClaude Opus 5.5