- allow tool response to be empty string - add a fallback for invalid tool call output - support resource in mcp server as tool - support transformers models, audio input, and fix openvino

- fix missing dashscope api_key after creating fncall_agent with qwen3

- fix mcp dangling processes - add truncation for function role - set QWEN_AGENT_MAX_LLM_CALL_PER_RUN=20, QWEN_AGENT_DEFAULT_MAX_INPUT_TOKENS=58k

- llm: Add omni support - gui: Modify the dependency version of gradio

- Adjust MCP as an optional dependency - Modify some search strategy in RAG

- Add reasoning_content filed to Message - Adjust the default Function Call template - Add a function to assist in printing streaming str response on the terminal

- support optional image prefix for vl fn-call - support video understanding

- support completion interface for oai - add qwen-audio support and support env for default settings - rm upload image prefix