/**
 * Known-miss registry for aidefence_learn (#4147).
 *
 * The detector's learned patterns are written by `learnFromDetection`, but
 * they are only created from threats the detector already found, and
 * `detect()` never reads them back. A threat the detector MISSED (a false
 * negative, the case feedback matters most for) therefore had nowhere to go.
 *
 * This registry stores a SHA-256 of the whitespace/case-normalised input so a
 * reported miss is flagged next time the identical text is scanned. It is an
 * exact-match list, not generalisation: the raw text is never stored.
 */
export interface KnownMiss {
    hash: string;
    threatType: string;
    reportedAt: string;
}
export declare function hashInput(input: string): string;
/** Returns true when the miss was newly recorded, false when it was already known. */
export declare function recordKnownMiss(input: string, threatType: string, cwd?: string): boolean;
/**
 * Removes exactly the entry whose hash AND threatType match (#4862), leaving
 * every other entry in place. Returns true when an entry was removed. When
 * nothing matches the store is not rewritten, so a no-op leaves it untouched.
 */
export declare function retractKnownMiss(input: string, threatType: string, cwd?: string): boolean;
export declare function findKnownMiss(input: string, cwd?: string): KnownMiss | undefined;
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