import { PrivacyEngine } from '../plugins/privacy/privacy-engine.js';
import type { KnowledgeEntry, KnowledgeCategory } from './types.js';
export interface GlobalSearchOpts {
    category?: KnowledgeCategory;
    limit?: number;
}
export interface GlobalKnowledgeEntry extends KnowledgeEntry {
    source_project: string;
    source_projects?: string[];
}
export declare class GlobalKnowledgeStore {
    private db;
    private dbPath;
    private stmtCache;
    private privacyEngine;
    constructor(privacyEngine?: PrivacyEngine, dbPath?: string);
    open(): void;
    private runMigrations;
    /**
     * Promote a project-level knowledge entry to the global store.
     * Runs the privacy engine on content before storing.
     */
    promote(entry: KnowledgeEntry, projectName: string): GlobalKnowledgeEntry;
    /**
     * Search the global knowledge store using FTS5 with fallback to scan.
     */
    search(query: string, opts?: GlobalSearchOpts): GlobalKnowledgeEntry[];
    /**
     * Remove an entry from the global store by ID.
     */
    demote(id: string): boolean;
    /**
     * Get all global knowledge entries with optional filters.
     */
    getAll(opts?: GlobalSearchOpts): GlobalKnowledgeEntry[];
    /**
     * Get a single entry by ID.
     */
    getById(id: string): GlobalKnowledgeEntry | null;
    /**
     * Find potential duplicates of a candidate entry in the global store.
     * Uses FTS5 for initial candidates, then Jaccard word overlap for scoring.
     */
    findDuplicates(candidate: KnowledgeEntry): Array<{
        entry: GlobalKnowledgeEntry;
        similarity: number;
    }>;
    /**
     * Auto-merge two global entries when confidence is high.
     * Keeps longer content as base, merges source_projects.
     */
    autoMerge(keepId: string, mergeId: string): GlobalKnowledgeEntry | null;
    /**
     * Get merge suggestions from the global store.
     */
    getMergeSuggestions(status?: 'pending' | 'accepted' | 'dismissed' | 'all', limit?: number): Array<{
        id: string;
        local_id: string | null;
        global_id: string;
        similarity_score: number;
        strategy: string;
        status: string;
        created_at: number;
    }>;
    /**
     * Update a merge suggestion's status.
     */
    updateMergeSuggestion(id: string, status: 'accepted' | 'dismissed'): boolean;
    /**
     * Insert a merge suggestion.
     */
    addMergeSuggestion(suggestion: {
        localId?: string;
        globalId: string;
        similarity: number;
        strategy: string;
    }): void;
    private extractWords;
    close(): void;
    private searchFTS5;
    private searchScan;
    private rowToEntry;
    private getDb;
}
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