import { Evidence, EvidenceSource } from '../models/evidence';
/**
 * Evidence grader for determining evidence grades and managing sources.
 * Implements the No-Claim-Without-Source rule.
 */
export declare class EvidenceGrader {
    /**
     * Grades evidence as FACT.
     * FACT: directly derivable from DB/ADR/Code-Symbol/Toolcall (with structured sources).
     *
     * @param sources Structured sources
     * @param description Optional description
     * @returns FACT evidence
     */
    gradeAsFact(sources: EvidenceSource[], description?: string): Evidence;
    /**
     * Grades evidence as INFERRED.
     * INFERRED: derived from multiple facts (all sources must be listed as structured sources).
     *
     * @param sources Structured sources (all facts used for inference)
     * @param description Optional description
     * @returns INFERRED evidence
     */
    gradeAsInferred(sources: EvidenceSource[], description?: string): Evidence;
    /**
     * Grades evidence as HEURISTIC.
     * HEURISTIC: best-practice without system evidence (must be explicitly marked).
     *
     * @param sources Optional structured sources (may be empty for pure heuristics)
     * @param description Description of the heuristic
     * @returns HEURISTIC evidence
     */
    gradeAsHeuristic(sources?: EvidenceSource[], description?: string): Evidence;
    /**
     * Automatically grades evidence based on source count and type.
     *
     * Rules:
     * - Single direct source (DB_QUERY, STATUS_CHECK, ADR, MODULE, SYMBOL) → FACT
     * - Multiple sources → INFERRED
     * - No sources → HEURISTIC (with warning)
     *
     * @param sources Structured sources
     * @param description Optional description
     * @returns Graded evidence
     */
    autoGrade(sources: EvidenceSource[], description?: string): Evidence;
    /**
     * Validates evidence and throws if invalid.
     *
     * @param evidence Evidence to validate
     * @throws Error if evidence is invalid
     */
    validate(evidence: Evidence): void;
    /**
     * Checks if text claims "from documentation" without sources.
     * This violates the No-Claim-Without-Source rule.
     *
     * @param text Text to check
     * @param evidence Evidence attached to the text
     * @returns true if violation detected
     */
    checkNoClaimWithoutSource(text: string, evidence?: Evidence): boolean;
    /**
     * Ensures HEURISTIC evidence is explicitly marked.
     *
     * @param evidence Evidence to check
     * @returns true if HEURISTIC is properly marked
     */
    isHeuristicMarked(evidence: Evidence): boolean;
    /**
     * Grade code analysis evidence.
     * DETERMINISTIC only when source code was retrieved and verified.
     *
     * @param args Analysis arguments
     * @returns Graded evidence
     */
    gradeCodeAnalysis(args: {
        source_snippet_retrieved: boolean;
        source_hash_verified: boolean;
        analysis: string;
    }): Evidence;
}
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