HF RL Explorer

Add an on error return item error recovery operator to the CAF observable type. This operator corresponds to…

Add an on error return item error recovery operator to the CAF observable type. This operator corresponds to…: a task in LegoFlow-SWE (Harbor dataset). Desired behavior: - When the upstream observable completes without error, every emitted item passes through unchanged. - When the upstream…

The task

**Desired behavior:** - When the upstream observable completes without error, every emitted item passes through unchanged. - When the upstream observable signals an error, the operator intercepts it, emits the provided fallback `item` exactly once, and immediately sends a successful completion (`on_complete`). No…

Part of Lego-X/LegoFlow-SWE.