/**
 * Reuse of previously reviewed attribute descriptions from external `.polish`
 * folders (prior polish runs on OTHER usecases/domains).
 *
 * Matching is by `(action, pathKey)` and intentionally IGNORES usecase — the
 * external folder is from a different usecase, so the same `(action, path)` may
 * hit MULTIPLE external entries (e.g. GOLD_LOAN__confirm and PERSONAL_LOAN__confirm
 * both define `context.transaction_id`). Those become the list of matches.
 *
 * No dependency on draft.ts (keeps the dependency arrow draft.ts → reuse.ts clean);
 * fallback / sentinel literals are duplicated here intentionally.
 */
/** Cap on matches kept per `(action, path)` key for prompt injection. */
export declare const MAX_REUSE_MATCHES = 3;
export type ReuseMatch = {
    /** draft.info — guaranteed non-empty, non-fallback, non-sentinel. */
    info: string;
    /** Source usecase (for telemetry / distinctness). */
    usecase: string;
    action: string;
    /** Dotted pathKey, e.g. "context.transaction_id". */
    path: string;
    /** Absolute path of the review file the match came from (for logging). */
    sourceFile: string;
};
export type ReuseIndex = {
    /** key = `${action}::${pathKey}` → distinct matches (capped). */
    byKey: Map<string, ReuseMatch[]>;
    stats: {
        files: number;
        entries: number;
        kept: number;
        keys: number;
    };
};
export declare function reuseKey(action: string, pathKey: string): string;
/**
 * Resolve a --reuse-from input to its `attributes-review` directory.
 * Accepts: the review dir itself, a `.polish` folder, or a polished output dir.
 * Returns null when none of those resolve.
 */
export declare function resolveReviewDir(inputPath: string): string | null;
/**
 * Load + index all APPROVED, non-fallback reviewed descriptions across the
 * supplied --reuse-from paths. Never throws: unresolvable paths and malformed
 * files become warnings.
 */
export declare function loadReuseIndex(paths: string[]): {
    index: ReuseIndex;
    warnings: string[];
};
/** Matches for a dedup group's representative `(action, pathKey)`. */
export declare function lookupReuse(index: ReuseIndex | undefined, action: string, pathKey: string): ReuseMatch[];
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