import type { Adapter } from "../adapter.js";
export declare const HOOK_HEALTH_EVENT: "agent_hook.completed";
export declare const HOOK_HEALTH_RECEIPT_VERSION: 1;
export declare const HOOK_HEALTH_ERROR_PHASE_LIMIT = 8;
export type HookHealthOutcome = "completed" | "skipped" | "degraded" | "faulted";
export interface HookHealthState {
    readonly started_at_ms: number;
    readonly started_rss_bytes: number;
    readonly event_name: string | null;
    readonly adapter: Adapter | null;
    readonly payload_bytes: number;
    coord_root: string | null;
    owner_id?: string;
    skipped_reason?: string;
    v3_state?: string;
    error_phases: string[];
}
export interface HookHealthReceipt {
    receipt_version: typeof HOOK_HEALTH_RECEIPT_VERSION;
    hook_name: string;
    adapter: Adapter | "unknown";
    outcome: HookHealthOutcome;
    exit_contract: "always-zero";
    exit_code: 0;
    duration_ms: number;
    payload_bytes: number;
    pid: number;
    rss_start_bytes: number;
    rss_end_bytes: number;
    rss_delta_bytes: number;
    retry_worker: boolean;
    error_count: number;
    error_phases: readonly string[];
    owner_id?: string;
    skipped_reason?: string;
    v3_state?: string;
}
export declare function beginHookHealth(input: {
    started_at_ms: number;
    started_rss_bytes: number;
    event_name: string | null;
    adapter: Adapter | null;
    payload_bytes: number;
}): HookHealthState;
export declare function observeHookDebug(state: HookHealthState | undefined, entry: Readonly<Record<string, unknown>>): void;
export declare function observeHookError(state: HookHealthState | undefined, phase: unknown): void;
export declare function finalizeHookHealth(state: HookHealthState, input: {
    finished_at_ms: number;
    finished_rss_bytes: number;
    pid: number;
    faulted?: boolean;
}): HookHealthReceipt;
export declare function writeHookHealthCompletion(state: HookHealthState | undefined, input: {
    finished_at_ms: number;
    finished_rss_bytes: number;
    pid: number;
    faulted?: boolean;
}): HookHealthReceipt | undefined;
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