silverhand-dsh-pet: A desktop pet at the bottom-right corner of the DSH Web GUI that reacts to agent status.

# Foreword Most DSH users encounter the same issue: agents can run for several minutes or even longer. When you switch to another window to work, your first priority upon returning is to check whether the agent is currently running, waiting for approval, or has stopped due to an error. Currently, the only method is to switch back to the Web GUI to monitor the output or check the logs. `silverhand-dsh-pet` takes a different approach: it delegates the status display to a desktop pet. It resides permanently in the bottom-right corner of the DSH Web GUI. The pet breathes when the agent is idle, goes to work when the agent is busy, and acts up when an error occurs. A quick glance at the corner tells you the status of the agent. The following sections introduce the specific features, installation steps, and troubleshooting methods of this plugin. `silverhand-dsh-pet` is a standard DSH plugin...