/**
 * Stats describes the first (or only) fusion pass before postprocessing,
 * not final counts or a sum across alias alternatives/fan-out branches.
 */
export interface SearchAppSearchFusionStats {
    /** AppChunks is what the app lane returned. */
    appChunks?: number;
    /** AppHasExactIDs mirrors the app plan's exact-identifier marker. */
    appHasExactIds?: boolean;
    /**
     * AppLaneEmptyText is true when the app lane returned no chunks (sources
     * or side context only).
     */
    appLaneEmptyText?: boolean;
    /**
     * Consensus counts app chunks the normal lane already had; they keep the
     * normal lane's position.
     */
    consensus?: number;
    /**
     * ExactCandidates counts app chunks the exact-identifier recipe found;
     * ExactPromoted is how many of them were placed above the normal lane.
     */
    exactCandidates?: number;
    /** Exact-identifier chunks placed above the normal lane. */
    exactPromoted?: number;
    /** Limit is the final chunk limit the fusion applied. */
    limit?: number;
    /** NormalChunks is what the normal lane returned. */
    normalChunks?: number;
    /**
     * NormalDisplaced counts normal-lane chunks the promoted block and the
     * tail pushed past the limit.
     */
    normalDisplaced?: number;
    /** App-only chunks appended within the tail budget. */
    tailAdded?: number;
    /**
     * TailCandidates counts app-only chunks eligible for the tail; TailAdded
     * is how many were appended within the tail budget.
     */
    tailCandidates?: number;
}