refactor: replace overloaded surface terminology

docs/i18n/style-samples.md

@@ -6,7 +6,7 @@
 
 ## ① 架构叙述
 
-> This document describes the architecture of the DeepSeek Harness — the foundation of **DeepSeek Code**. The governing principle, from the microkernel design discussion: **everything is a plugin**. The core is deliberately tiny — a handful of abstract services plus one concrete loop plugin (`dsh-agent-loop`) — and every product feature is a plugin against the extension surface described here, without modifying the loop.
+> This document describes the architecture of the DeepSeek Harness — the foundation of **DeepSeek Code**. The governing principle, from the microkernel design discussion: **everything is a plugin**. The core is deliberately tiny — a handful of abstract services plus one concrete loop plugin (`dsh-agent-loop`) — and every product feature is a plugin against the extension API described here, without modifying the loop.
 
 本文介绍 DeepSeek Harness 整体架构，它是 **DeepSeek Code** 的底层基座。微内核设计讨论中确立了核心设计准则：**一切皆插件**。内核刻意做得极精简，仅包含少量抽象服务，外加一个实体循环插件 `dsh-agent-loop`。所有产品功能均基于本文定义的扩展接口开发为独立插件，无需改动主循环逻辑。
 

docs/i18n/terminology.md

@@ -167,7 +167,7 @@
 | same-world subprocess | 与宿主共享文件系统和内核的子进程 | | 同世界子进程 | |
 | sandbox | 沙箱 | | | |
 | service | 服务 | | | |
-| serving surface | 对外服务接口 | | | |
+| serving interface | 对外服务接口 | | | |
 | session | 会话 | | | |
 | session event | 会话事件 | | | |
 | setup card | 设置卡片 | | | 首次运行时代替行卡直接展开的配置卡 |