add the tool-integrated reasoning agent for qwen2.5-math

fix import error caused by missing __init__.py

add jsonschema as a dependency

raise error messages when optional dependencies are missing

provide a method for installation without code interpreter deps

release version 0.0.5: add memory and long-context agents

set default max_input_tokens to 5800

improve the implementation of naive RAG

add the project description to setup.py

release version 0.0.1 and upload it to pypi