docs(changelog): sync 2.1.0 from apps/kimi-code/CHANGELOG.md (#4006)

* docs(changelog): sync 2.1.0 from apps/kimi-code/CHANGELOG.md

* docs(changelog): shorten the fullscreen TUI entry to how to enable it

* docs(changelog): reword the fullscreen TUI entry

Author: liruifengv

docs/en/release-notes/changelog.md

@@ -6,6 +6,24 @@ outline: 2
 
 This page documents the changes in each Kimi Code CLI release.
 
+## 2.1.0 (2026-09-23)
+
+### Features
+
+- Add an experimental fullscreen mode toggle for the TUI. Enable it via the TUI mode setting in `/settings`, or set `tui_mode = "fullscreen"` in `~/.kimi-code/tui.toml`; it takes effect after restarting Kimi Code.
+- In fullscreen, click a folded block to open or close it.
+- Add a clickable "Jump to bottom" indicator to the fullscreen TUI.
+
+### Polish
+
+- Reduce the CLI's startup time and memory usage.
+- Turn off filesystem watchers for config and workspace files by default. Set `[watch] enabled` to `true` or `KIMI_CODE_WATCH=1` to turn them back on. See [`watch`](../configuration/config-files.md#watch) for details.
+
+### Bug Fixes
+
+- Harden workspace security: block file tools from accessing files outside the working directory through symlinks, apply project-local configuration only after the workspace is trusted, block repository git configuration from executing commands during background git operations, and reject additional directories that resolve to the home directory or filesystem root.
+- 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.
+
 ## 2.0.2 (2026-09-19)
 
 ### Polish

docs/zh/release-notes/changelog.md

@@ -6,6 +6,24 @@ outline: 2
 
 本页记录 Kimi Code CLI 每个版本的变更内容。
 
+## 2.1.0（2026-09-23）
+
+### 新功能
+
+- 新增实验性全屏模式开关，可在 `/settings` 的 TUI mode 设置中开启，或在 `~/.kimi-code/tui.toml` 中设置 `tui_mode = "fullscreen"`，重启 Kimi Code 后生效。
+- 全屏模式下，点击折叠块即可展开或收起。
+- 全屏界面新增可点击的 "Jump to bottom" 指示器。
+
+### 优化
+
+- 缩短 CLI 启动时间并降低内存占用。
+- 默认关闭对配置文件和工作区文件的监听，如需开启可将 `[watch] enabled` 设为 `true` 或设置 `KIMI_CODE_WATCH=1`，详见 [`watch`](../configuration/config-files.md#watch)。
+
+### 修复
+
+- 加强工作区安全限制：文件工具无法再通过符号链接访问工作目录外的文件，项目本地配置仅在工作区受信任后生效，后台 git 操作不再执行仓库 git 配置中的命令，并拒绝解析结果为 home 目录或文件系统根目录的附加目录。
+- 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)。
+
 ## 2.0.2（2026-09-19）
 
 ### 优化