/**
 * relevanceSignal.ts
 *
 * Implicit relevance signal recorder.
 * When a `read_page` call follows a `search_pages` call within 30 s from the
 * same auth subject, and the page read was in the search results, record the
 * (query_text, page_name) pair to the `search_relevance_signals` Supabase table.
 *
 * Phase 4 accuracy improvement.
 *
 * Table schema: scripts/search-relevance-signals.sql
 */
/**
 * Record a completed search for correlation tracking.
 */
export declare function recordSearch(userId: string, queryText: string, resultNames: string[]): void;
/**
 * Check whether a page read correlates with a recent search and, if so, fire a
 * background insert into `search_relevance_signals`.
 *
 * Safe to call on every `read_page` — returns immediately without awaiting.
 */
export declare function maybeRecordRelevanceSignal(userId: string, pageName: string, supabaseUrl: string, serviceRoleKey: string): void;
/** Reset state — used in tests. */
export declare function resetRelevanceSignalState(): void;
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