import type { SecuritySignature, SecurityStackId } from "./signature.js";
export interface SelectInput {
    stackId: SecurityStackId;
    changedPaths: string[];
    diffKeywords: string[];
    topK: number;
    /** Typically index.forStack(stackId). */
    stackSignatures: SecuritySignature[];
    /** Typically index.forStack("generic") — ALWAYS included in the result. */
    genericFloor: SecuritySignature[];
}
/**
 * Pure and total: ranks `stackSignatures` by score, caps at `topK`, then
 * ALWAYS concatenates `genericFloor` (deduped by `signatureId`) so the floor
 * is present even when it did not rank into the top-K on its own merit.
 */
export declare function selectSignatures(input: SelectInput): SecuritySignature[];
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