wsl-keepalive: Keep-Alive and Status Monitoring Plugin for WSL Distributions

The wsl-keepalive plugin is designed to resolve disconnections caused by Windows terminating WSL after idleness while running DeepSeek Harness (DSH) in WSL. It provides a “Keep Alive” toggle in the WebUI, allowing the host to start and stop dbus-daemon and thereby keep WSL active. Features include duplicate-launch prevention, precise stopping, automatic wsl.exe detection, and configuration validation and persistence. After installation, ensure WSL interoperation is enabled, dbus-launch is installed, and the Node.js environment meets the requirements.