import { BrainInsight, HallucinationFlag, EnsembleVote, AdversarialLog, ThreatVector } from '../types.js';
/**
 * Adversarial Defense — the immune system of the brain.
 *
 * Hallucination Detection:
 *   Cross-reference LLM claims against actual file content.
 *   "function X exists in file Y" → verify with file reads.
 *   Contradiction detection: compare against stored knowledge.
 *
 * Ensemble Verification:
 *   Critical insights → send to 2+ models → majority vote.
 *   Split verdict → flag for human review.
 *
 * Injection Detection:
 *   Scan for prompt injection patterns in agent inputs.
 *   Block and log ThreatVector when detected.
 *   Rate limit: max 3 injections per session before alert.
 */
export declare class AdversarialDefense {
    private log;
    private injectionCount;
    private readonly MAX_INJECTIONS_PER_SESSION;
    private static readonly INJECTION_PATTERNS;
    constructor();
    /**
     * Verify an insight against actual project state.
     * Cross-references claims with file content.
     */
    verifyInsight(insight: BrainInsight, projectDir: string): Promise<HallucinationFlag>;
    /**
     * Send a question to multiple models and collect votes.
     * Majority consensus required for acceptance.
     */
    ensembleVerify(question: string, modelAnswers: Array<{
        model: string;
        answer: string;
        confidence: number;
    }>): EnsembleVote;
    /**
     * Scan input for prompt injection patterns.
     * Returns ThreatVector if detected, null otherwise.
     */
    scanForInjection(input: string): ThreatVector | null;
    /** Block and log a detected threat */
    blockAndLog(threat: ThreatVector): void;
    /** Get defense statistics */
    getDefenseStats(): AdversarialLog;
    /** Get injection count for current session */
    getSessionInjectionCount(): number;
    /** Simple text similarity based on shared words */
    private textSimilarity;
    /** Attempt to decode common encoding schemes */
    private decodeCommonEncodings;
    private saveToDisk;
    private loadFromDisk;
}
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