/**
 * Bounded, metadata-only diagnostics.
 *
 * Every field is an explicit scalar. Raw session ids, commands, cwd, environment
 * values, input, output, native error text, confirmation previews, and artifact
 * content are structurally excluded — they are never accepted as arguments.
 */
import { auditLog } from "../store/logs.js";
import type { SessionOperation, SessionState, SessionTransportKind, StableErrorCode, TerminationReason } from "./types.js";
export declare function redactSessionId(sessionId: string | undefined): string | undefined;
export interface TelemetryEvent {
    readonly operation: SessionOperation;
    readonly sessionId?: string | undefined;
    readonly durationMs: number;
    readonly result: "ok" | StableErrorCode;
    readonly state?: SessionState | undefined;
    readonly transport?: SessionTransportKind | undefined;
    readonly inputBytes?: number | undefined;
    readonly outputBytes?: number | undefined;
    readonly queueDepth?: number | undefined;
    readonly retryCount?: number | undefined;
    readonly terminationReason?: TerminationReason | undefined;
    /** Recorded when Start failed after allocating a process or terminal. */
    readonly cleanupVerified?: boolean | undefined;
}
export declare class SessionTelemetry {
    private readonly sink;
    constructor(sink?: typeof auditLog);
    record(event: TelemetryEvent): void;
}