import { type Kysely } from 'kysely';
/**
 * Add `org_settings.dispatch_ack_timeout_ms BIGINT` (nullable).
 *
 * Per-org override of the dispatch-acknowledgment deadline. NULL falls
 * back to the cluster-wide default (`KICI_DISPATCH_ACK_TIMEOUT_MS`,
 * default 10s). Operators raise it on high-latency networks via
 * `kici-admin org-settings`.
 *
 * Idempotent: a re-run on a DB that already has the column is a no-op.
 */
export declare function up(db: Kysely<unknown>): Promise<void>;
export declare function down(db: Kysely<unknown>): Promise<void>;
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