export interface RepoClassification {
    /** Repo with highest similarity to the query embedding, or null if no centroids loaded */
    topRepo: string | null;
    /** Similarity score per repo */
    scores: Map<string, number>;
    /**
     * Confidence = similarity(top-1) - similarity(top-2).
     * High confidence (>0.05) means the query clearly belongs to one repo.
     */
    confidence: number;
}
/**
 * Loads per-repo embedding centroids from the DB (averaged over all card
 * embeddings that belong to each repo). Cached in memory; call
 * `invalidateRepoCentroidsCache()` after re-indexing.
 */
export declare function getRepoCentroids(): Map<string, Float32Array>;
export declare function invalidateRepoCentroidsCache(): void;
/**
 * Classifies a query embedding against per-repo centroids.
 * Use the result to apply repo-affinity boosts in scoring.
 */
export declare function classifyQueryEmbedding(queryEmbedding: Float32Array): RepoClassification;
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