import type { Database } from "./db-types.js";
export declare const SCHEMA_VERSION = 30;
export declare function rebuildThreadRegistryWithExitedStatus(db: Database, existingColumns: string[]): void;
/**
 * Label pre-column tombstones (valid_to set, expiry_reason NULL) with the most
 * that can be *proven* about who expired them — measured on the 2026-07-26
 * incident DB, but every rule below is derived from writer code, not from that
 * one dataset:
 *
 * 1. `superseded_by IS NOT NULL` → 'superseded'. Structural.
 * 2. Bulk clusters (≥10 rows, same thread, byte-identical valid_to — the
 *    signature of a single-nowISO() loop):
 *    - on a dead/archived/unregistered thread, only archiveNotesForThread ever
 *      produced that → 'archived-legacy';
 *    - on a live thread the sweep never ran; if the cluster is 100%
 *      '[REFLECTION]%' rows it can only be enforceReflectionCap's buffer trim
 *      → 'reflection-cap' (e.g. the predicted 635-row trim of restored
 *      reflections on thread 1327 at 2026-07-26T01:02:55);
 *    - a mixed cluster on a live thread is ambiguous → falls through to 3.
 * 3. Everything else → 'unknown-legacy'. Pruning singles, gate kills and
 *    small sweeps are indistinguishable after the fact; no guess is recorded
 *    as fact. These stay dead unless their thread is explicitly unarchived.
 *
 * Exported for tests; idempotent (only touches expiry_reason IS NULL rows).
 */
export declare function backfillExpiryReasons(db: Database): void;
export declare function runMigrations(db: Database): void;
//# sourceMappingURL=migration-runner.d.ts.map