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a1d331e8f0
- `stream_v2` / `astream_v2` now pass the assembled `AIMessage` to `on_llm_end` via `LLMResult(generations=[[ChatGeneration(message=...)]])`, so LangSmith and other tracers see the final response on v2 calls (was previously `generations=[]`). - `astream_v2`'s producer re-raises `asyncio.CancelledError` ahead of the generic handler, so cancellation propagates normally instead of being converted into `on_llm_error` + a swallowed exception. - New `message_to_events` / `amessage_to_events` in `_compat_bridge` replay a finalized `AIMessage` as a synthetic content-block lifecycle. Intended for the langgraph-side handler that emits protocol events for non-streamed node outputs (cache hits, `model.invoke()` inside a node, checkpointed state). Turns `_extract_final_blocks` from a dangling helper into a real caller. - Document the optional `_stream_chat_model_events` / `_astream_chat_model_events` provider hooks inline at the getattr sites so integrators can discover the expected signature.