/**
 * The `/health.warnings` notice for a daemon whose engine has no usable bus (DES-TEAMING-002 T0).
 * One place for the wording, so every failure kind reads correctly.
 */
export interface BusUnavailableNotice {
    dbPath: string;
    reason: string;
    /** What failed: crew's boot probe could not open the file, or the engine could not arm its bus
     *  bridge on the handed bus within its bound. Absent = the probe (the older shape). */
    kind?: 'probe_open' | 'bridge_not_armed';
}
export interface HealthBusWarning {
    kind: 'bus.unavailable';
    severity: 'warning';
    message: string;
}
export declare function busUnavailableWarning(u: BusUnavailableNotice): HealthBusWarning;
export interface HealthBusSeamsOffWarning {
    kind: 'bus.seams_off';
    severity: 'warning';
    message: string;
}
/** The `/health.warnings` notice for a daemon whose engine was handed the bus at `dbPath` but has
 *  no `Core.busEmit`/`Core.busRead` (wicked-core#631): crew reaches the bus only through the
 *  engine, so every bus seam is off. */
export declare function busSeamsOffWarning(dbPath: string): HealthBusSeamsOffWarning;
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