/**
 * Vault Sync Engine
 *
 * Syncs Gaia memories from SQLite to an Obsidian vault as interlinked
 * markdown files. Supports full and incremental sync, Claude Code memory
 * file ingestion, and orphan cleanup.
 */
export interface VaultConfig {
    /** Absolute path to the Obsidian vault root. */
    vaultPath: string;
    /** Absolute path to the Gaia SQLite database. */
    gaiaDbPath: string;
    /** Absolute path to the sync state JSON file. */
    syncStatePath: string;
    /** Optional path to Claude Code memory directory (e.g. ~/.claude/projects/.../memory/). */
    claudeMemoryPath?: string;
}
export interface SyncState {
    vault_path: string;
    last_full_sync: string;
    synced_memories: Record<string, string>;
}
export interface SyncResult {
    created: number;
    updated: number;
    deleted: number;
    skipped: number;
    errors: string[];
}
export declare class VaultSync {
    private config;
    constructor(config: VaultConfig);
    /**
     * Create the required folder structure in the vault and write an initial
     * dashboard index file.
     */
    init(): Promise<void>;
    /**
     * Full sync: reads ALL memories from Gaia DB, transforms and writes every
     * file, updates sync state. Also syncs Claude Code memory files if
     * claudeMemoryPath is configured.
     */
    sync(): Promise<SyncResult>;
    /**
     * Incremental sync: only writes memories whose rendered content has changed
     * since the last sync (detected via MD5 hash comparison).
     */
    syncIncremental(): Promise<SyncResult>;
    /**
     * Returns the current sync state, or null if no sync has run yet.
     */
    getStatus(): SyncState | null;
    private loadSyncState;
    private saveSyncState;
    private hashContent;
    private syncGaiaMemories;
    private syncClaudeMemories;
    /**
     * Walk Foundation/ in the vault and remove .md files whose memory id is no
     * longer in currentIds. Returns the number of files deleted.
     */
    private cleanOrphans;
}
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