FLX-4002: AI call denied by the document's agentPolicy

Family: governance/sovereignty (the 4000 band)

flux_engine.governance.gate.AIGate.call evaluated the RFC-04 enforcement decision (flux_engine.spec.enforce.decide, the reference implementation) and it refused the call: allow was false. The decision's own reasonCode and reason explain which check failed -- model, use case, purpose, or token budget -- and travel with this error as PolicyDenied.decision.

Look it up offline

$ fluxsim explain FLX-4002

Every code is listed in the error index.