langchain-ai/langchainjs langchain@1.5.19

on GitHub

Patch Changes

• #11990 0c5e7bc Thanks @hntrl! - Avoid copying full agent state into every parallel tool task. Restore tool and middleware state from graph channels for compact tasks while continuing to support full-state tasks saved in older checkpoints.

• #11989 f096a32 Thanks @hntrl! - Align the default todo-list system prompt and tool description with Python, including guidance to deliver the substantive final answer after the last write_todos result.