dsh-particle-whale: DeepSeek Official Three.js 3D Particle Whale Background Plugin

`dsh-particle-whale` is a Three.js-based 3D particle whale background plugin designed to provide immersive, high-performance visual enhancement for DeepSeek Harness (DSH). It transforms 2D vector outlines into 3D particle meshes with volumetric depth, rim lighting, and specular highlights, simulating the realistic swimming motion of marine creatures. The plugin features intelligent responsiveness: it cruises across the full screen when idle, swims to the top-right corner and shrinks into a status indicator while thinking or streaming output, and triggers a nebula explosion effect when a new session is created. It supports adaptive light and dark themes, and maintains a frame rate of 60–120 FPS through instanced rendering and asynchronous optimization. Installation can be done via symbolic links or npm, and requires specific React and DSH client dependencies.