/**
 * `deterministic:lag` — the registry watching itself (entry `registry-lagging`, §4.3).
 *
 * Fed by the registry's own 30 s tick (and at once when the push ring sheds). Lagging means the
 * ring is over its depth threshold, the bus pull is more than `tail_lag_ms` behind the bus tail, or
 * the ring shed an input since the last tick. One flag per episode, run-less ("for whoever runs
 * studio"); the episode's flag clears when a tick finds the registry caught up.
 */
import { z } from 'zod';
import type { WatchCheck } from '../types.js';
declare const Threshold: z.ZodObject<{
    queue_depth: z.ZodNumber;
    tail_lag_ms: z.ZodNumber;
}, "strict", z.ZodTypeAny, {
    queue_depth: number;
    tail_lag_ms: number;
}, {
    queue_depth: number;
    tail_lag_ms: number;
}>;
type Threshold = z.infer<typeof Threshold>;
export declare const lagCheck: WatchCheck<Record<string, never>, Threshold>;
export {};
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