dsh-mood-light: Display Screen Edge Ambient Light Based on DSH Session Status

DSH Mood Light is a client-side plugin for the DSH Web interface, following the "everything is a plugin" philosophy. It intuitively displays session status through ambient light on the outermost layer of the screen without interfering with operations. The plugin dynamically changes colors based on status: green flowing glow effects indicate a running state, yellow indicates pending tasks, pink indicates completion or idle state, and it switches off when there is no active session. It offers three visual effects including soft glow, marquee, and linear gradients, and supports visual adjustment of parameters such as aperture width, opacity, and rotation speed in the settings panel, with configurations persisted to localStorage. The installation command is `dsh plugin --profile web add "github:lihang-lh/dsh-moon-light"`, and the service must be restarted after installation. Configuration priority is localStorage > plugin configuration > default settings.