import type { MigrationDb } from "./index";
/**
 * Migration 049: Session extract cursors
 *
 * Tracks the last extraction offset per session so mid-session
 * checkpoint extraction only processes new transcript content
 * (delta tracking). Prevents double-extraction for long-lived
 * sessions that never call session-end.
 */
export declare function up(db: MigrationDb): void;
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