DeepSeek Harness v0.1.5-alpha.2：Web插件API变更与极简模式默认工具

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新增功能

• 右侧 Sidebar 新增常见文档类型预览，支持 Markdown、代码高亮、HTML、PDF 、图片 @imccyu, @Yifffan, @yixiangihsiang, @CreatixChu, @yudshj
• 支持模型显式在会话中交付文件，并支持在右侧 Sidebar 预览、用默认应用打开、在文件管理器中定位 @yudshj, @CreatixChu
• /feedback 命令新增支持提交明细反馈内容 @CreatixChu

问题修复

• 修复模型目录变化后失效的 pi-ai 配置导致整个模型设置入口消失的问题；错误项保留诊断和修复入口 @LegGasai
• 在发现模型或创建自定义 provider 前校验并规范化 Base URL，并直接提示无效地址。 @turtle2099
• 修复 Windows Web 界面的原生文件夹选择器可能在其他窗口后方打开的问题。 @Elevator14B
• 修复在 Composer 中输入空白字符后占位提示仍然显示的问题。 @CreatixChu
• 修复工具筛选后的子代理仍收到不可用文件和 Web 工具指导的问题。 @koalazf99
• 拒绝 MCP 工具发现中的重复分页游标，避免启动或同步持续等待，并保留上一组可用工具。 @grllll
• 修复 npm 安装需要依赖 fs-ext 本地编译的问题 @imccyu

体验优化

• 改善设置界面的本地化与可访问性：设置入口补充本地化无障碍名称，中文显示对话模式与内置模型说明 @turtle2099

其他变更

• Session 数据格式当前为 V3 版本，跨版本迁移细节见 session-format-v2-to-v3/README.md @tianyicui
• Web 插件面板 API 调整： 插件可通过 sidebar.panellist 与 main 注册全局面板；原 conversation Slot 迁移为 main 的 conversation key @imccyu
• 极简模式默认工具调整： Web minimal 与 Python sdk-minimal 默认仅提供持久 shell，str_replace_editor 改为显式启用；持久 Bash 输出统一报告退出或超时状态 @koalazf99
• 实验性 Agent Teams 包现可从 npm 安装；用户需显式添加 profile，不默认启用 @imccyu

New Features

• Add previews for common document types in the right Sidebar, including Markdown, syntax-highlighted code, HTML, PDF, and images. by @imccyu, @Yifffan, @yixiangihsiang, @CreatixChu, @yudshj
• Let models explicitly deliver files in conversations, with right-Sidebar preview, default-app opening, and file-manager reveal. by @yudshj, @CreatixChu
• The /feedback command now supports detailed feedback submissions. by @CreatixChu

Bug Fixes

• Keep pi-ai model settings available when catalog changes invalidate an existing configuration, preserving diagnostics and repair controls. by @LegGasai
• Validate and normalize custom-provider Base URLs before model discovery or provider creation, with inline feedback for invalid addresses. by @turtle2099
• Fix the Windows native folder picker opening behind other windows in the Web app. by @Elevator14B
• Fix the Composer placeholder remaining visible after whitespace is entered. by @CreatixChu
• Keep filesystem and Web guidance aligned with each agent's visible tools, so filtered subagents are not instructed to use unavailable tools. by @koalazf99
• Reject repeated MCP tool-list pagination cursors instead of hanging startup or synchronization, while keeping the last valid tool set available. by @grllll
• Fix npm installations that previously required a local fs-ext build. by @imccyu

Improvements

• Improve Settings localization and accessibility by adding accessible names and localizing conversation display options and built-in model descriptions in Chinese. by @turtle2099

Chores

• The current Session data format is V3. See session-format-v2-to-v3/README.md for cross-version migration details. by @tianyicui
• Web plugin panel API changes: Plugins can register global panels through sidebar.panellist and main; the former conversation slot moves to the conversation key under main. by @imccyu
• Minimal-profile default tools: Web minimal and Python sdk-minimal are shell-only by default, with str_replace_editor available by explicit opt-in; persistent Bash reports completion and timeout status consistently. by @koalazf99
• Publish installable experimental Agent Teams packages; users must explicitly add the profile, which is not enabled by default. by @imccyu

Full Changelog: dsh-v0.1.5-alpha.1...dsh-v0.1.5-alpha.2