/**
 * Hotspot Scorer — Spec 13 R2 + R3.
 *
 * Computes hotspot scores as churn-percentile × complexity-percentile for
 * every file and function. Scores are written into the hotspot_scores table
 * and recomputed on every sync (idempotent).
 *
 * Bus-factor risk (R3): files and functions in the top quartile of hotspot
 * scores whose dominant_author_share ≥ 0.9 are flagged.
 */
import type { HotspotEntry } from '../types.js';
/**
 * Compute hotspot scores and write them into the hotspot_scores table.
 * Also detects bus-factor risks.
 *
 * @param rawDb  The underlying better-sqlite3 database handle.
 * @returns  Array of HotspotEntry for external use (CLI / reporting).
 */
export declare function computeHotspots(rawDb: any): HotspotEntry[];
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