dsh-msys2-bash-executor: A Configurable Bash Executor for the Windows Platform

`dsh-msys2-bash-executor` is a standalone Bash executor plugin for DeepSeek Harness (DSH), specifically designed for the Windows platform to address the lack of native Unix Shell support. The plugin bypasses Node.js `shell: true` mode by handling `argv` directly, supports MSYS2, UCRT64, and Git Bash, and provides automatic detection, flexible configuration, and process management. Installation requires local building and packaging, and it can be enabled through the web interface or a configuration file. When using it, note that the plugin runs with full permissions, equivalent to `danger-full-access`, and must be used with the native Windows version of Node.js.