/**
 * @module logging/context
 *
 * Ambient fields stamped onto every log line.
 *
 * Tracing a bug means following ONE request through every subsystem it
 * touched. Without a correlation id you cannot: the gateway, the runner, the
 * tool layer and the proactive pipeline all log to the same file, interleaved
 * with concurrent runs, and nothing says which lines belong together.
 *
 * The run id already exists as AsyncLocalStorage in infra/koi-events, but the
 * logging layer must not import the run layer (that direction is a cycle, and
 * logging has to stay usable from anywhere). So the run layer PUSHES a
 * provider in, and logging pulls from it when it has one.
 */
type LogContextProvider = () => Record<string, unknown> | undefined;
/** Called once by the run layer at import; last registration wins. */
export declare function setLogContextProvider(next: LogContextProvider | null): void;
/**
 * Fields for the current async context, or {} when there is none (a startup
 * line, a background timer). Never throws: a broken provider must not be able
 * to take logging down with it.
 */
export declare function getLogContext(): Record<string, unknown>;
export {};