/**
 * SeoPlaybookRetriever — ranks + never-empty renders SeoSignature[] for a
 * given workflow (spec-20260715-ultimate-seo-suite, Sprint 2; folds the
 * security template's selector.ts (rank + generic-floor dedup) and
 * resolver.ts (never-empty promptFragment) into one file, since the
 * contract lists only this as a single code file).
 *
 * Method name is `retrieve` (sc-2-4) — NOT `resolve` (the architecture API
 * table's name); the binding success criterion and evaluator assert
 * `retrieve({workflow,target,vertical})`.
 */
import type { SeoSignature, SeoWorkflow } from "./types.js";
import type { SeoPlaybookIndex } from "./playbook-index.js";
export interface SeoRetrieveInput {
    workflow: SeoWorkflow;
    target?: string;
    vertical?: string;
    topK?: number;
}
export interface SeoRetrieveResult {
    promptFragment: string;
    signatures: SeoSignature[];
}
export declare class SeoPlaybookRetriever {
    private readonly index;
    constructor(index: SeoPlaybookIndex);
    /**
     * Never throws: loads (idempotent) the index, ranks the workflow's
     * matching signatures, and always includes the generic floor deduped by
     * `playbookId`. `promptFragment` is never empty.
     */
    retrieve(input: SeoRetrieveInput): Promise<SeoRetrieveResult>;
}
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