v1.1.9

Features

• Model: Added http_client_factory support to OpenAIModel, allowing callers to inject a custom httpx.AsyncClient factory to control HTTP connection lifecycle and pool settings such as keepalive expiry (#83).

Bug Fixes

• Telemetry: Switched agent_run and invocation spans back to start_as_current_span so child spans such as call_llm inherit the correct parent context, restoring complete trace attributes (including system instructions and tools) in Langfuse reporting.