dsh-py-codeact: CodeAct Agent Loop for Persistent IPython Sessions

`dsh-py-codeact` is a CodeAct agent loop plugin maintained by CNSeniorious000, designed to address the lack of persistent state in DeepSeek Harness’s code mode. It bridges Harness tools to a persistent IPython session, allowing the model to retain variable state while executing Python code, and supports magic commands, MCP integration, and REPL introspection. The plugin does not implement the `CodeRuntime` interface and is suited for complex workflows that need to maintain context across steps.