import type { Migration } from "../types.js";
/**
 * v0.2.1 → v0.2.4 — non-destructive workspace.yaml upgrade.
 *
 * Adds three new fields with defaults:
 *   - timezone               (default: Asia/Seoul)
 *   - briefings              (default: morning 08:00, evening 18:00)
 *   - background_routines    (default: signal-scan 12:00, experiment-check 16:00,
 *                              weekly-review sunday 20:00)
 *
 * No file moves. Existing JSONL memory and workflows are untouched. Messenger
 * channels are reduced from 6 to 2 (`owner-command`, `workflow`) but the bot
 * does not delete old channels — it just stops sending to them. Users are
 * advised in the migration output to archive old channels manually.
 *
 * v0.2.2 and v0.2.3 were planning-only releases; the actual code stream goes
 * v0.2.1 → v0.2.4 in a single jump.
 */
export declare const migration: Migration;