/**
 * Optional integration with @a5c-ai/tasks-adapter proven subsystem.
 *
 * Provides cryptographic verification of breakpoint answers when the
 * adapters-tasks package is available as an optional peer dependency.
 * Never throws -- always returns a graceful result.
 */
/**
 * Configuration for breakpoint answer verification.
 */
export interface BreakpointVerificationConfig {
    /** Whether verification is enabled. When false, verification is skipped. */
    enabled: boolean;
    /** Directory containing trusted public keys. Passed to adapters-tasks verifyAnswer. */
    trustedKeysDir?: string;
}
/**
 * Result of a breakpoint answer verification attempt.
 */
export interface BreakpointVerificationResult {
    /** Whether the answer was successfully verified as authentic. */
    verified: boolean;
    /** Detailed verification result from adapters-tasks (when available). */
    verificationResult?: {
        valid: boolean;
        publicKeyFingerprint?: string;
        responderName?: string;
        reason?: string;
        verifiedAt: string;
    };
    /** Reason verification was skipped or failed (when verified is false). */
    reason?: string;
}
/**
 * Check whether a breakpoint result carries signature fields,
 * indicating it was cryptographically signed via the proven subsystem.
 */
export declare function hasSignatureFields(result: Record<string, unknown>): boolean;
/**
 * Verify a breakpoint result's cryptographic signature using the
 * adapters-tasks proven subsystem.
 *
 * This function never throws. If adapters-tasks is not installed,
 * verification is disabled, or the result is unsigned, it returns
 * a graceful { verified: false } result with an explanatory reason.
 *
 * @param result - The breakpoint result (may or may not contain signature fields).
 * @param config - Verification configuration. If omitted, defaults to { enabled: true }.
 */
export declare function verifyBreakpointResult(result: Record<string, unknown>, config?: BreakpointVerificationConfig): Promise<BreakpointVerificationResult>;
//# sourceMappingURL=proven-verification.d.ts.map