chore: mention input provenance tracking feature

README.md

@@ -24,6 +24,7 @@
 - **Hybrid TaskWorkers**: Combine conventional computations (e.g., API calls) with powerful LLM-driven operations, leveraging Retrieval-Augmented Generation (RAG) capabilities.
 - **Type Safety with Pydantic**: Ensure data integrity and type consistency across workflows with Pydantic-validated input and output.
 - **Intelligent Data Routing**: Utilize type-aware routing to efficiently manage data flow between nodes, adapting to multiple downstream consumers.
+- **Input Provenance Tracking**: Trace the lineage and origin of each TaskWorkItem as it flows through the workflow, enabling detailed analysis and debugging of complex processes.
 
 ## Requirements