import type { RankedRouteCandidate } from './route-selection.js';
import type { AffinityDescription, IdFactory, RouteAvailabilityDiagnostic, RoutePlan, VerifiedRoutingSubject } from './routing-contracts.js';
import type { RoutePolicy } from './routing-policy.js';
export interface StoredCandidate extends RankedRouteCandidate {
    readonly candidateRef: string;
}
export interface StoredPlan {
    readonly plan: RoutePlan;
    readonly subjectRef: string;
    readonly affinityRef?: string;
    readonly affinityRevision?: number;
    readonly policyProfileName?: string;
    readonly policyProfileRevision?: string;
    readonly hadAffinity: boolean;
    readonly candidates: readonly StoredCandidate[];
    readonly policy: RoutePolicy;
    readonly claimedAttempts: Set<string>;
    readonly roundRobinKey?: string;
}
export interface StoredAffinity extends AffinityDescription {
    readonly accountRef: string;
    readonly workspaceId?: string;
}
export declare class RoutePlanError extends Error {
    readonly code: 'no-route' | 'unknown-model' | 'capabilities-unmet' | 'invalid-plan' | 'expired-plan' | 'stale-candidate' | 'conflict';
    readonly diagnostic?: RouteAvailabilityDiagnostic | undefined;
    constructor(message: string, code: 'no-route' | 'unknown-model' | 'capabilities-unmet' | 'invalid-plan' | 'expired-plan' | 'stale-candidate' | 'conflict', diagnostic?: RouteAvailabilityDiagnostic | undefined);
}
export declare const subjectRef: (subject: VerifiedRoutingSubject) => string;
export declare const routingOwnerRef: (subject: VerifiedRoutingSubject) => string;
export declare const affinityRef: (subject: VerifiedRoutingSubject, affinityKey: string, workspaceId?: string) => string;
export declare const mergeRoutePolicy: (base: RoutePolicy, override?: Partial<RoutePolicy>) => RoutePolicy;
export declare class SequentialIdFactory implements IdFactory {
    private sequence;
    next(prefix: 'plan' | 'candidate' | 'attempt'): string;
}
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