dsh-llamacpp-bridge: Turning Local llama.cpp into a DSH First-Class Model Provider

`dsh-llamacpp-bridge` is a plugin that integrates local llama.cpp into DeepSeek Harness (DSH). Its plugin-based architecture uniformly manages local models without requiring manual process configuration. It supports switching between single-model and Router modes, automatic directory synchronization, avoiding VRAM residue, and terminal-based visual monitoring, and provides graceful shutdown and hot reload capabilities. Users only need to install Node.js 20+ and configure the `llama-server` path to use local models in DSH just like cloud models.