/**
 * `cleo doctor` row `sync_sealer` (journal spec §2.5, §4.4; T13036).
 *
 * Read-only. It opens the project `cleo.db` as a snapshot and reports:
 * - the capture backlog head: live captures, the oldest one's seq and age
 *   (a head that stays put across seals is stuck, and `sealPending` names
 *   the reason in `pending`);
 * - quarantined captures per table (`_sync_quarantine`): those tables are
 *   suspect until the repair diff re-derives them (S3d);
 * - a persisted sync flag that is still unreleased: the sealer refuses it,
 *   but its presence means something wrote it outside `setSyncFlag`.
 *
 * A store without the sealer tables reports `ok`: nothing to seal.
 *
 * @module
 * @task T13036
 */
/** The `sync_sealer` row of `cleo doctor`. */
export interface SyncSealerDoctorCheck {
    readonly check: 'sync_sealer';
    readonly status: 'ok' | 'warning' | 'error';
    readonly message: string;
    readonly details?: Record<string, unknown>;
    readonly fix?: string;
}
/** What {@link inspectSyncSealer} found. */
export interface SyncSealerReport {
    readonly dbPath: string;
    readonly storeExists: boolean;
    /** The sealer tables exist. */
    readonly sealerInstalled: boolean;
    readonly backlog: {
        readonly live: number;
        readonly oldestSeq: number | null;
        readonly oldestAtMs: number | null;
    };
    /** Quarantined captures per table: those tables are suspect. */
    readonly quarantined: Readonly<Record<string, number>>;
    /** Unreleased sync flags that are persisted on. */
    readonly unreleasedOn: readonly string[];
}
/** A backlog head older than this is reported as a warning. */
export declare const SEAL_BACKLOG_STALE_MS: number;
/** Inspect the project store's sealer state. Read-only. */
export declare function inspectSyncSealer(projectRoot: string): SyncSealerReport;
/** The `sync_sealer` row of the default `cleo doctor` report. */
export declare function syncSealerDoctorCheck(projectRoot: string, now?: () => number): SyncSealerDoctorCheck;
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