/**
 * W3C Trace Context type — re-exported from the codegen.
 *
 * Source: QAR's `protocol.envelopes.TraceContext` Pydantic model. The codegen
 * picks up the `traceparent` (required, 55-char `00-<32hex>-<16hex>-<2hex>`
 * per https://www.w3.org/TR/trace-context/) and `tracestate` (optional vendor
 * data) constraints. QAR enforces the 55-char regex server-side; the SDK
 * trusts inbound on parse and produces valid headers outbound via the
 * OTel layer.
 */
export type { TraceContext } from './generated/envelope.js';
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