import type { HmacAuthority, OutcomeCategory, OutcomeEnvelope, OutcomeResult, OutcomeWorkflow } from '../evidence/types.js';
/**
 * The outcome authority used for cross-project mining must come from stable,
 * studio-managed secret storage. A process/session key would assign a project a
 * new pseudonym after every restart and could falsely satisfy the diversity gate.
 */
export interface StudioOutcomeAuthority extends HmacAuthority {
    readonly scope: 'studio';
    readonly persistence: 'cross-session';
}
export type ImprovementProposalState = 'inactive' | 'approved' | 'rejected' | 'superseded';
export interface ImprovementProvenance {
    readonly eventIds: readonly string[];
    readonly envelopeHashes: readonly string[];
    readonly projectPseudonyms: readonly string[];
}
export interface ImprovementProposal {
    readonly proposalId: string;
    readonly state: ImprovementProposalState;
    readonly workflow: OutcomeWorkflow;
    readonly result: OutcomeResult;
    readonly category: OutcomeCategory;
    readonly support: number;
    readonly distinctProjects: number;
    readonly confidence: number;
    readonly createdAt: string;
    readonly provenance: ImprovementProvenance;
    readonly supersededBy?: string;
    readonly decision?: Readonly<{
        kind: 'approve' | 'reject';
        occurredAt: string;
        actorPseudonym: string;
    }>;
}
export type ImprovementEvent = Readonly<{
    eventId: string;
    type: 'outcome.accepted';
    envelope: OutcomeEnvelope;
}> | Readonly<{
    eventId: string;
    type: 'proposal.created';
    proposal: Omit<ImprovementProposal, 'state'>;
}> | Readonly<{
    eventId: string;
    type: 'proposal.superseded';
    proposalId: string;
    supersededBy: string;
}> | Readonly<{
    eventId: string;
    type: 'proposal.decided';
    proposalId: string;
    decision: 'approve' | 'reject';
    occurredAt: string;
    actorPseudonym: string;
}>;
export interface ImprovementStore {
    append(event: ImprovementEvent): 'stored' | 'replay';
    appendBatch(events: readonly ImprovementEvent[]): readonly ('stored' | 'replay')[];
    events(): readonly ImprovementEvent[];
}