export type ResearchPlanConfidence = "low" | "medium" | "high";
export type ResearchEvidenceVerdict = "support" | "contradict" | "uncertain";
export interface ResearchPlanItem {
    claim: string;
    confidence: ResearchPlanConfidence;
    unknowns: string[];
    evidenceNeeded: string[];
    counterexampleQueries: string[];
    sourceConflictPolicy: string;
    dropCondition: string;
    verifierChecks: string[];
}
export interface ResearchEvidenceEntry {
    claim: string;
    source: string;
    confidence: ResearchPlanConfidence;
    verdict: ResearchEvidenceVerdict;
    notes?: string;
}
export interface ResearchLedgerVerdict {
    claim: string;
    finalVerdict: "accepted" | "rejected" | "uncertain";
    survivingSources: ResearchEvidenceEntry[];
    rejectReason?: string;
    unresolvedUnknowns: string[];
}
export interface ResearchPlanValidationResult {
    valid: boolean;
    errors: string[];
}
export declare function validateResearchPlanItem(item: Partial<ResearchPlanItem>): ResearchPlanValidationResult;
export declare function validateResearchEvidenceEntry(entry: Partial<ResearchEvidenceEntry>): ResearchPlanValidationResult;
export declare function evaluateResearchLedger(item: ResearchPlanItem, evidence: readonly ResearchEvidenceEntry[]): ResearchLedgerVerdict;