/**
 * Blob Consolidation — migrates legacy attachments (tasks.db + filesystem)
 * into the unified blob store (manifest.db + .cleo/blobs/blobs/).
 *
 * Consolidation strategy:
 *   1. Read every attachment from tasks.db (with its refs for owner mapping).
 *   2. Find the legacy blob file on disk at .cleo/attachments/sha256/<pref>/<rest>.<ext>.
 *   3. Read bytes and re-attach via CleoBlobStore — this naturally deduplicates
 *      (SHA-256 is content-addressed) and writes to both the new filesystem path
 *      and the manifest.db row.
 *   4. Track statistics: total, migrated, already-present, missing-files, errors.
 *
 * Idempotent: re-running skips blobs already registered in the new blob store.
 *
 * @task T11183 (Epic T10519 / Saga T10516)
 */
export interface ConsolidationStats {
    total: number;
    migrated: number;
    alreadyPresent: number;
    missingFiles: number;
    errors: number;
    errorDetails: Array<{
        attachmentId: string;
        sha256: string;
        message: string;
    }>;
}
export interface ConsolidationOptions {
    projectRoot?: string;
    dryRun?: boolean;
    limit?: number;
}
export declare function consolidateBlobs(options?: ConsolidationOptions): Promise<ConsolidationStats>;
export declare function verifyConsolidation(options?: {
    projectRoot?: string;
}): Promise<{
    consistent: boolean;
    total: number;
    matched: number;
    missing: Array<{
        attachmentId: string;
        sha256: string;
        slug: string | null;
    }>;
}>;
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