docs(changelog): sync 2.0.0 from apps/kimi-code/CHANGELOG.md (#3861)

* docs(changelog): sync 2.0.0 from apps/kimi-code/CHANGELOG.md

* docs(changelog): trim /desktop entry in English page

Author: liruifengv

docs/en/release-notes/changelog.md

@@ -6,6 +6,21 @@ outline: 2
 
 This page documents the changes in each Kimi Code CLI release.
 
+## 2.0.0 (2026-09-17)
+
+### Features
+
+- Add the `/desktop` slash command (alias `/install-desktop`) and the `kimi install-app` subcommand.
+- Render mermaid code blocks as diagrams in the terminal; turn it off under `/settings` → Mermaid diagrams, or set `mermaid = "off"` in the `[markdown]` section of tui.toml.
+
+### Polish
+
+- The built-in browser plugin now appears as "Kimi Browser Extension" in the plugins panel, marketplace catalog, and docs, matching the product rename.
+
+### Bug Fixes
+
+- Fix several known issues and make various refinements. See the [changelog on GitHub](https://github.com/MoonshotAI/kimi-code/blob/main/apps/kimi-code/CHANGELOG.md) for more technical entries.
+
 ## 0.43.1 (2026-09-15)
 
 ### Features

docs/zh/release-notes/changelog.md

@@ -6,6 +6,21 @@ outline: 2
 
 本页记录 Kimi Code CLI 每个版本的变更内容。
 
+## 2.0.0（2026-09-17）
+
+### 新功能
+
+- 新增 `/desktop` 斜杠命令（别名 `/install-desktop`）与 `kimi install-app` 子命令。
+- Mermaid 代码块现在会在终端中渲染为图表；可在 `/settings` → Mermaid diagrams 中关闭，或在 tui.toml 的 `[markdown]` 配置段中设置 `mermaid = "off"`。
+
+### 优化
+
+- 内置浏览器插件更名为 "Kimi Browser Extension"，插件面板、插件市场与文档中的名称同步更新。
+
+### 修复
+
+- 修复了一些已知问题，并做了若干细节优化。更详细的变更记录见 [GitHub](https://github.com/MoonshotAI/kimi-code/blob/main/apps/kimi-code/CHANGELOG.md)。
+
 ## 0.43.1（2026-09-15）
 
 ### 新功能