Pi v0.79.4 - 更新日志

### 新功能 - **自动首次运行主题选择** - pi 在首次运行时检测终端背景，并默认使用 `dark` 或 `light` 主题。请参阅 [选择主题](https://github.com/earendil-works/pi/blob/v0.79.4/packages/coding-agent/docs/themes.md#selecting-a-theme)。 - **独立二进制文件完整性校验和** - GitHub 发布资源现包含 `SHA256SUMS` 文件，用于验证独立二进制文件的下载。请参阅 [快速开始安装](https://github.com/earendil-works/pi/blob/v0.79.4/packages/coding-agent/docs/quickstart.md#install)。 ### 新增 - 为独立二进制文件的 GitHub 发布资源添加了 `SHA256SUMS` 完整性校验文件 ([#5739](https://github.com/earendil-works/pi/issues/5739))。 - 添加了基于终端背景的首次运行交互式主题检测功能 ([#5385](https://github.com/earendil-works/pi/pull/5385)，由 [@vegarsti](https://github.com/vegarsti) 贡献)。 ### 修复 - 修复了 bash 工具输出收集逻辑：在子进程退出后、后代进程仍在写入时，继续持续读取 stdout/stderr，避免晚期输出被截断 ([#5753](https://github.com/earendil-works/pi/pull/5753)，由 [@Mearman](https://github.com/Mearman) 贡献)。 - 修复了 `/tree` 帮助信息的渲染：在窄终端上显示紧凑的换行控件，而非将其截断 ([#5055](https://github.com/earendil-works/pi/issues/5055))。 - 修复了 SIGTERM/SIGHUP 交互式关闭逻辑：确保信号处理器在终端清理完成前保持安装状态，防止 `signal-exit` 重新发送信号导致终端停留在原始/Kitty 键盘模式 ([#5724](https://github.com/earendil-works/pi/issues/5724))。 - 修复了扩展文档：明确说明 `pi.getActiveTools()` 返回活动工具名称，而 `pi.getAllTools()` 返回工具元数据 ([#5729](https://github.com/earendil-works/pi/issues/5729))。 - 修复了问答与问卷扩展示例：对过长的提示词、选项和帮助文本进行换行处理，而非直接截断 ([#5708](https://github.com/earendil-works/pi/pull/5708)，由 [@xl0](https://github.com/xl0) 贡献)。 - 修复了 `pi list`、`pi install` 和 `pi update` 等包命令：即使扩展程序留有后台句柄未关闭，命令在完成操作后也能正常终止 ([#5687](https://github.com/earendil-works/pi/issues/5687))。 - 修复了 `pi update` 在 pnpm 全局安装场景下的问题：当配置的 `global-bin-dir` 与当前活跃的 pnpm 主目录不匹配时 ([#5689](https://github.com/earendil-works/pi/issues/5689))。 - 修复了使用范围或标签（例如 `@^1.2.7`）的 npm 包规范：确保已安装的包资源能正常加载，而非被误判为不匹配的确切版本锁定 ([#5695](https://github.com/earendil-works/pi/issues/5695))。 - 修复了继承自 Anthropic 的 1 小时提示词缓存写入成本计算：将 1 小时缓存写入价格调整为输入价格的 2 倍，而非使用 5 分钟缓存写入费率 ([#5738](https://github.com/earendil-works/pi/pull/5738)，由 [@theBucky](https://github.com/theBucky) 贡献)。 - 修复了继承自 GitHub Copilot Claude 的自适应思考工作量元数据，使其与手动核对的 Copilot 模型能力保持一致 ([#4637](https://github.com/earendil-works/pi/issues/4637))。 - 修复了继承自 OpenCode/OpenCode Go 的补全模型元数据：对于拒绝 `prompt_cache_retention` 的路由，省略长保留期缓存字段 ([#5702](https://github.com/earendil-works/pi/issues/5702))。 - 修复了继承自 CJK 宽字符的覆盖层合成逻辑：当覆盖层起始于全宽单元格内时，确保边框保持对齐 ([#5297](https://github.com/earendil-works/pi/issues/5297))。 - 修复了继承自 WezTerm 的 Kitty 内联图像渲染：在完整重绘回退期间，确保在绘制图像位置前预留图像填充行，且不影响高图像定位 ([#5618](https://github.com/earendil-works/pi/issues/5618), [#4415](https://github.com/earendil-works/pi/issues/4415))。 - 修复了自定义提供商配置：纯大写的 API 密钥和 Header 值现在保持为字面量，不再被误认为旧版环境变量引用；环境变量请使用显式的 `$ENV_VAR` 语法 ([#5661](https://github.com/earendil-works/pi/issues/5661))。

### New Features - **Automatic first-run theme selection** - pi detects the terminal background on first run and defaults to the `dark` or `light` theme. See [Selecting a Theme](https://github.com/earendil-works/pi/blob/v0.79.4/packages/coding-agent/docs/themes.md#selecting-a-theme). - **Standalone binary integrity checksums** - GitHub release assets now include `SHA256SUMS` files for verifying standalone binary downloads. See [Quickstart Install](https://github.com/earendil-works/pi/blob/v0.79.4/packages/coding-agent/docs/quickstart.md#install). ### Added - Added `SHA256SUMS` integrity files to standalone binary GitHub release assets ([#5739](https://github.com/earendil-works/pi/issues/5739)). - Added first-run interactive theme detection from the terminal background ([#5385](https://github.com/earendil-works/pi/pull/5385) by [@vegarsti](https://github.com/vegarsti)). ### Fixed - Fixed bash tool output collection to keep draining stdout/stderr after the child exits while descendants still write, avoiding truncated late output ([#5753](https://github.com/earendil-works/pi/pull/5753) by [@Mearman](https://github.com/Mearman)). - Fixed `/tree` help rendering to show compact wrapped controls instead of truncating them on narrow terminals ([#5055](https://github.com/earendil-works/pi/issues/5055)). - Fixed SIGTERM/SIGHUP interactive shutdown to keep signal handlers installed until terminal cleanup completes, preventing `signal-exit` from re-sending the signal and leaving the terminal in raw/Kitty keyboard mode ([#5724](https://github.com/earendil-works/pi/issues/5724)). - Fixed extensions documentation to clarify that `pi.getActiveTools()` returns active tool names while `pi.getAllTools()` returns tool metadata ([#5729](https://github.com/earendil-works/pi/issues/5729)). - Fixed question and questionnaire extension examples to wrap long prompt, option, and help text instead of truncating it ([#5708](https://github.com/earendil-works/pi/pull/5708) by [@xl0](https://github.com/xl0)). - Fixed package commands such as `pi list`, `pi install`, and `pi update` to terminate after completing even if an extension leaves background handles open ([#5687](https://github.com/earendil-works/pi/issues/5687)). - Fixed `pi update` for pnpm global installs whose configured `global-bin-dir` no longer matches the active pnpm home ([#5689](https://github.com/earendil-works/pi/issues/5689)). - Fixed npm package specs that use ranges or tags (for example `@^1.2.7`) so installed package resources still load instead of being treated as mismatched exact pins ([#5695](https://github.com/earendil-works/pi/issues/5695)). - Fixed inherited Anthropic 1-hour prompt-cache write cost accounting to price 1-hour cache writes at 2x input instead of the 5-minute cache-write rate ([#5738](https://github.com/earendil-works/pi/pull/5738) by [@theBucky](https://github.com/theBucky)). - Fixed inherited GitHub Copilot Claude adaptive-thinking effort metadata to match manually checked Copilot model capabilities ([#4637](https://github.com/earendil-works/pi/issues/4637)). - Fixed inherited OpenCode/OpenCode Go completion model metadata to omit long-retention cache fields for routes that reject `prompt_cache_retention` ([#5702](https://github.com/earendil-works/pi/issues/5702)). - Fixed inherited overlay compositing over CJK wide characters so borders stay aligned when an overlay starts inside a full-width cell ([#5297](https://github.com/earendil-works/pi/issues/5297)). - Fixed inherited WezTerm inline Kitty image rendering during full redraw fallbacks so image padding rows are reserved before the placement is drawn without regressing tall-image placement ([#5618](https://github.com/earendil-works/pi/issues/5618), [#4415](https://github.com/earendil-works/pi/issues/4415)). - Fixed custom provider config so plain uppercase API key and header values remain literals instead of being treated as legacy environment references; use explicit `$ENV_VAR` syntax for environment variables ([#5661](https://github.com/earendil-works/pi/issues/5661)).