DeepSeek Harness Plugin: Spec-Kit Spec-Driven Development Skill Suite

The DeepSeek Harness plugin "dsh-specify" decomposes the Spec-Kit specification-driven development workflow into `/speckit-*` slash commands, helping developers maintain logical consistency step by step from requirements definition to code implementation. The plugin includes 10 core commands, including master control, principle definition, requirement clarification, solution planning, task decomposition, consistency checking, code implementation, quality gating, and status monitoring. Installation requires `specify-cli` to be installed in the environment and supports flexible Git branching strategies via the `--no-branch` or `--branch` parameters.