/**
 * Adversarial feedback formatter (RuleHost MVP, PRI-428).
 *
 * Converts EvaluatorAdversarialResult.failedCases into a deterministic,
 * human-readable text block that is injected into a Round-2 Artificer prompt
 * so the LLM can make targeted code corrections instead of blind regeneration.
 *
 * Design:
 *   - Pure function, no I/O, no timestamps/random (deterministic).
 *   - Each failed case becomes one line: caseId | attackType | expected vs
 *     actual | rationale.
 *   - Empty input still yields a usable, non-empty string (the gate may
 *     reject on a runtime error with no per-case detail).
 */
import type { AdversarialFailedCase } from './evaluator-output.js';
/**
 * Format a list of adversarial failed cases into a prompt-injectable text block.
 *
 * @param failedCases - from EvaluatorAdversarialResult.failedCases (may be empty)
 * @returns a deterministic multi-line string; never empty
 */
export declare function formatAdversarialFeedback(failedCases: readonly AdversarialFailedCase[]): string;
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