/**
 * cli-migrate-o.ts
 *
 * One-time migration: reassign O-entry IDs to match their linked P-entry IDs.
 * O0042 linked to P0048 becomes O0048. Unlinked O-entries go to O0000.
 *
 * Usage: hmem migrate-o-entries
 */
export declare function migrateOEntries(): Promise<void>;