dsh-env-ops

Set up, upgrade, build, and troubleshoot the DeepSeek Harness (dsh) development environment, especially on Windows — Node/pnpm/corepack versions, the build pipeline, git hooks, and known failure modes. Use this whenever the user hits a build/install/startup error in the deepseek-harness repo, wants to update the repo or its toolchain, asks why pnpm/lefthook/tsc fails, or says "环境"/"升级"/"装不上"/"构建失败" about dsh. Also…