[Integration] LangChain & LangGraph Partner Package

[ishangupta-ds]

Overview

Introduce ChatTuringEngine into langchain-community for agentic loops and LangGraph workflows.

Key Deliverables

• Submit PR to langchain-ai/langchain (libs/community/langchain_community/chat_models/turing.py).
• Support custom parameters: sparsity_ratio, use_svd_kv, and speculative_draft_tokens.
• Add end-to-end multi-agent LangGraph test case.

Upstream Reference

See integrations/langchain/UPSTREAM_PR.md.

[ishangupta-ds]

🚀 Upstream Pull Request submitted to langchain-ai/langchain: langchain-ai/langchain#39901

[ishangupta-ds]

🚀 Active Upstream PR open on langchain-ai/langchain: langchain-ai/langchain#39903 (Linked to Issue #39902)

[ishangupta-ds]

🚀 Official upstream Feature Request submitted on langchain-ai/langchain: langchain-ai/langchain#39904