/**
 * One-time migration of CLI state directories from pre-v0.11.0 to v0.11.0:
 *
 *   - Backfills `type: "freeform"` on every premise `meta.json` that lacks it.
 *
 * Checksums are NOT stored in premise `meta.json` on disk — they are computed
 * lazily at hydration time by `ArgumentEngine.fromSnapshot` via `flushChecksums()`.
 * No checksum recomputation pass is required here; the runtime handles it.
 *
 * Detected via the absence of a `.proposit-v0.11` marker in the state dir;
 * once migration completes (or there is nothing to migrate) the marker is
 * written so subsequent CLI invocations no-op immediately.
 */
export declare function migrateV011(): Promise<void>;
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