dsh-theme-brick: A Pure Token Brick Theme for DeepSeek Harness

`dsh-theme-brick` is a pure frontend theme plugin for DeepSeek Harness (DSH) based on a token overlay, delivering non-intrusive visual customization through restrained design. It includes 84 Live Tokens, offers a warm-toned color palette and a brick-and-gray-joint effect, supports one-click toggling, and is compatible with multiple plugins running concurrently. Installation must be performed via the DSH plugin manager; after installation, the process needs to be restarted and the configuration verified. The project follows the Golden Triangle rule, with no DOM manipulation or global style side effects.