Step-by-step SKILL.md packages an AI follows for a single kind of task.
A skill is a focused playbook - instructions, examples and constraints - that makes any model reliable at one job, from SQL reporting to changelog writing. The router fills a plan's skill slot with the best match for the request.
MNN Hexagon/HVX/HMX DSP 后端（`source/backend/hexagon`）的优化、重构、构建与回归验证。覆盖设备实测的相位分解、测量纪律、v79/v81 双架构差异、常见瓶颈模式、已否证方向与 cDSP crash 诊断。
