import type { SupervisorCapability, SupervisorSourceReference } from "../supervisor/contract.js";
export interface CoordinationHealthDiagnostic {
    code: "malformed_json" | "invalid_contract";
    byte_offset: number;
    segment_ordinal: number;
    event_id?: string;
}
export interface CoordinationHealthSnapshot {
    observed_at: string;
    capability: SupervisorCapability;
    recent_events: readonly SupervisorSourceReference[];
    diagnostics: readonly CoordinationHealthDiagnostic[];
    omitted_event_count: number;
}
/** Read bounded V3 references without retaining event payloads or the full ledger reader. */
export declare function collectCoordinationHealthSnapshot(coordRoot: string, now?: Date): CoordinationHealthSnapshot;
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