dsh-cae-plugin (Mochi): Natural Language-Driven CAE Pipeline

`dsh-cae-plugin` (codenamed Mochi) is an automated CAE pipeline plugin for DeepSeek Harness, designed to drive the complete simulation workflow—ranging from geometry modeling and mesh generation to solver computation and post-processing—directly through natural language commands. The plugin integrates tools such as build123d, Gmsh, CalculiX, and OpenFOAM, supporting both structural finite element analysis (FEA) and computational fluid dynamics (CFD). It provides five core modules: geometry processing, mesh generation, solver computation, result post-processing, and mesh independence verification. It supports Docker-based installation and is compatible with both Web interface interactions and command-line task execution. This tool is well suited for developers who need to rapidly validate simulation concepts and can effectively lower the entry barrier to CAE development.