/**
 * SECURITY DEFINER stored procedures for worker router access control.
 *
 * Each procedure runs as the schema owner (admin) and validates the
 * caller's `app.allowed_streams` session variable before executing.
 * Worker roles are granted EXECUTE on these procedures only — they
 * have zero direct table access.
 *
 * ## Procedures
 *
 * | Procedure | Purpose |
 * |-----------|---------|
 * | `worker_dequeue` | Fetch and reserve messages from `worker_streams` |
 * | `worker_ack` | Soft-delete (ack) messages in `worker_streams` |
 * | `worker_dead_letter` | Dead-letter messages in `worker_streams` |
 * | `worker_respond` | Publish a response into `engine_streams` |
 * | `worker_listen` | Subscribe to NOTIFY channel for a stream |
 * | `worker_unlisten` | Unsubscribe from NOTIFY channel |
 */
export declare function getCreateProceduresSQL(schemaName: string): string[];
export declare function getCreateWorkerCredentialsTableSQL(schemaName: string): string;