Patch-style file editing for DeepSeek Harness: one apply_patch tool accepting git/unified diff (default) and Codex apply_patch syntax (opt-in), with all-or-nothing application, read-before-write intent dance, sandbox-aware delete/move, (declarative volat

DSH 上的类 VSCode 编码体验：Monaco 编辑器（文件页签/QuickOpen/状态栏，可驻 DSH 0.1.5+ 官方右侧 Sidebar 与对话同屏）+ 命令栏（Ctrl+Shift+P）与可扩展指令系统 + VS Code 兼容代码片段（.code-snippets 全局/项目，IntelliSense 展开）+ Agent 编辑差异审查（整文件差异/采纳/拒绝/归档/回滚）+ SVN 集成（侧栏变更面板/日志弹窗/并排差异）+ 语言服务器（LSP）智能（跳转定义/引用/hover/大纲

Read-only Git and SVN change preview for DSH