/**
 * Migration registry schema (SPEC_F §F.5.1).
 * Tables: migration_runs, migration_dirty_keys, migration_errors.
 */
import type Database from './driver.ts';
export declare const MIGRATION_SCHEMA = "\nCREATE TABLE IF NOT EXISTS migration_runs (\n  run_id TEXT PRIMARY KEY,\n  source_uri TEXT NOT NULL,\n  started_at INTEGER NOT NULL,\n  updated_at INTEGER NOT NULL,\n  status TEXT NOT NULL,\n\n  scan_cursor TEXT NOT NULL DEFAULT \"0\",\n  scan_count_hint INTEGER NOT NULL DEFAULT 1000,\n\n  scanned_keys INTEGER NOT NULL DEFAULT 0,\n  migrated_keys INTEGER NOT NULL DEFAULT 0,\n  skipped_keys INTEGER NOT NULL DEFAULT 0,\n  error_keys INTEGER NOT NULL DEFAULT 0,\n  migrated_bytes INTEGER NOT NULL DEFAULT 0,\n\n  dirty_keys_seen INTEGER NOT NULL DEFAULT 0,\n  dirty_keys_applied INTEGER NOT NULL DEFAULT 0,\n  dirty_keys_deleted INTEGER NOT NULL DEFAULT 0,\n\n  last_error TEXT\n);\n\nCREATE TABLE IF NOT EXISTS migration_dirty_keys (\n  run_id TEXT NOT NULL,\n  key BLOB NOT NULL,\n\n  first_seen_at INTEGER NOT NULL,\n  last_seen_at INTEGER NOT NULL,\n  events_count INTEGER NOT NULL DEFAULT 1,\n\n  last_event TEXT,\n  state TEXT NOT NULL DEFAULT \"dirty\",\n\n  PRIMARY KEY (run_id, key)\n);\n\nCREATE INDEX IF NOT EXISTS migration_dirty_keys_state_idx\n  ON migration_dirty_keys(run_id, state);\n\nCREATE INDEX IF NOT EXISTS migration_dirty_keys_last_seen_idx\n  ON migration_dirty_keys(run_id, last_seen_at);\n\nCREATE TABLE IF NOT EXISTS migration_errors (\n  run_id TEXT NOT NULL,\n  at INTEGER NOT NULL,\n  key BLOB,\n  stage TEXT NOT NULL,\n  message TEXT NOT NULL\n);\nCREATE INDEX IF NOT EXISTS migration_errors_at_idx ON migration_errors(run_id, at);\n";
/**
 * Apply migration registry schema to database.
 */
export declare function applyMigrationSchema(db: Database): void;