import type { RunEvent } from "../engine/types.ts";
import type { RunSummary } from "./types.ts";
/**
 * Fold one run's ordered events into a `RunSummary` (spec §6.3), entirely via the pure engine
 * derivation (spec §5.1/§5.3) — this file holds no state logic of its own, only the `at` lookup for
 * `completedAt` and the shaping into `RunSummary`. Shared by every `RunStore` implementation (memory,
 * filesystem) so listing logic is defined exactly once.
 */
export declare function summarizeRun(events: readonly RunEvent[]): RunSummary | undefined;
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