Blue Whale Splash: macOS Style Skin Plugin for DeepSeek Harness Web GUI

`dataizu/dsh-whale-aqua-theme` is a visual theme plugin designed specifically for the DeepSeek Harness (DSH) Web GUI, aiming to beautify the interface without modifying source code. The plugin features three core functions: an macOS-style skin, a dynamic whale background with water effects, and a dot-matrix whale send button. Its animations utilize a low-overhead design (DPR 1.25, 24fps) and support automatic pausing upon defocus to optimize performance. There are two primary installation methods: the recommended plugin approach, which installs via the `dsh plugin` command from GitHub. This method does not alter the dist files, facilitating DSH upgrades and rollbacks, and completely mitigates side effects upon stopping the plugin. The traditional dist patching method requires manually copying CSS files and modifying index.html.