/** User comparison: compatibility scoring, genre divergences, cross-recommendations */
import type { TasteProfile } from "./taste.js";
import type { AniListMediaListEntry } from "../types.js";
export interface SharedTitle {
    title: string;
    score1: number;
    score2: number;
    id: number;
}
/** Pearson-ish compatibility score (0-100) from shared title scores */
export declare function computeCompatibility(shared: Array<{
    score1: number;
    score2: number;
}>): number;
/** Find genre preference differences between two profiles */
export declare function computeGenreDivergences(p1: TasteProfile, p2: TasteProfile, name1?: string, name2?: string): string[];
/** Find titles one user rated 8+ that the other hasn't seen */
export declare function findCrossRecs(sourceEntries: AniListMediaListEntry[], targetEntries: AniListMediaListEntry[], sourceUsername: string): string[];