import type { HarnessEmissionState } from "#harness/emission.js";
import type { ExecutionInstrumentation } from "#instrumentation/runtime.js";
import type { RuntimeTraceContext } from "#protocol/message.js";
/** Prepares native tracing for workflow-owned preambles emitted outside the tool loop. */
export declare function prepareWorkflowPreambleTrace(input: {
    readonly emissionState: HarnessEmissionState;
    readonly instrumentation: ExecutionInstrumentation | undefined;
}): Promise<RuntimeTraceContext | undefined>;