Function traceWorkflow

traceWorkflow<Env = unknown, Params = unknown>(): <
    T extends WorkflowEntrypointConstructor<Env, Params>,
>(
    target: T,
    context: ClassDecoratorContext,
) => T
Decorator to add tracing to Cloudflare Workflow classes

Automatically:
- Initializes OTLP collectors and flushes on completion
- Stores traceparent in deterministic step (persists across pause/resume)
- Extracts traceparent from payload._traceparent or generates new one
- Proxies step methods to create child spans for each step
Type Parameters
- Env = unknown
- Params = unknown
Returns <T extends WorkflowEntrypointConstructor<Env, Params>>(
target: T,
context: ClassDecoratorContext,
) => T
Example
```
@traceWorkflow()
export class MyWorkflow extends WorkflowEntrypoint<Env, Params> {
  async run(event: WorkflowEvent<Params>, step: WorkflowStep) {
    await step.do("fetch-data", async () => {
      // This step is automatically traced
    });
  }
}
```
- Defined in workflow.ts:486