/**
 * First-run telemetry notice.
 *
 * Prints a one-time, stderr-only box telling the user that anonymous CLI usage
 * telemetry is being collected and how to turn it off. Shown at most once ever
 * (backed by the persisted `noticeShownAt` timestamp in preferences.json), only
 * in interactive human mode, and never on the machine-readable path.
 *
 * Mirrors the structural pattern of unclaimed-warning.ts: a per-session guard,
 * a `!isJsonMode()` gate, the shared renderStderrBox helper, and a never-throws
 * contract so it can never block command execution. The one structural
 * difference is persistence — this notice writes `noticeShownAt` the first time
 * it actually displays so it never re-shows across runs.
 */
/**
 * Show the first-run telemetry notice if it has never been displayed.
 *
 * Gate order is load-bearing: every suppression check runs BEFORE
 * markNoticeShown(), so a non-human first run (--json / piped / CI) never
 * consumes the one-time display. The flag is set only when the box is actually
 * rendered, so a real human eventually sees it. Never throws.
 */
export declare function maybeShowTelemetryNotice(): void;
/** Reset session state (for testing). */
export declare function resetTelemetryNoticeState(): void;