export type RuntimeChainEvidenceLevel = 'none' | 'clue' | 'verified_segment' | 'verified_chain';
export interface DeriveRuntimeChainEvidenceLevelInput {
    mode: 'none' | 'heuristic_clue' | 'verified_hops';
    requiredSegments?: string[];
    foundSegments?: string[];
}
export declare function deriveRuntimeChainEvidenceLevel(input: DeriveRuntimeChainEvidenceLevelInput): RuntimeChainEvidenceLevel;