dsh-wooden-fish: Tapping a Wooden Fish to Accumulate Merit in DSH Web Mode

The DeepSeek Harness (DSH) plugin `dsh-wooden-fish` is a fun interactive tool designed to relieve the monotony of using Web mode. It renders a wooden fish and a wooden mallet in the center of the page, supporting background blur and theme adaptation. When users click the wooden fish, it triggers a striking animation and a “Merit +1” message, while also playing a sound effect and reciting “Namo Amitabha Buddha.” The plugin is installed via the `dsh plugin` command; it currently has no hidden toggle, and removal requires stopping or uninstalling it.