revert: drop runtime-image-en language variant

README.md

@@ -10,11 +10,10 @@
 npx skills add gitea@livebook:images/skills.git
 ```
 
-按语言选择安装(中文版 `runtime-image` / 英文版 `runtime-image-en`,同一能力的两个语言版本,选一个即可):
+只安装指定 skill:
 
 ```bash
 npx skills add gitea@livebook:images/skills.git --skill runtime-image
-npx skills add gitea@livebook:images/skills.git --skill runtime-image-en
 ```
 
 ## 卸载
@@ -33,10 +32,9 @@ npx skills remove runtime-image -g
 
 ## Skills 列表
 
-| Skill | 语言 | 说明 |
-| --- | --- | --- |
-| [runtime-image](skills/runtime-image/SKILL.md) | 中文 | 探测项目技术栈,按 runtime-base 镜像矩阵选型并生成/修正 Dockerfile |
-| [runtime-image-en](skills/runtime-image-en/SKILL.md) | English | English version of runtime-image: detect the tech stack, pick a base image from the runtime-base matrix, generate/audit the Dockerfile |
+| Skill | 说明 |
+| --- | --- |
+| [runtime-image](skills/runtime-image/SKILL.md) | 探测项目技术栈,按 runtime-base 镜像矩阵选型并生成/修正 Dockerfile |
 
 ## 目录结构
 
@@ -44,12 +42,10 @@ npx skills remove runtime-image -g
 
 ```
 skills/
-├── runtime-image/        # 中文版
-│   ├── SKILL.md          # skill 主体(必需)
-│   ├── references/       # 补充参考文档
-│   └── scripts/          # 辅助脚本
-└── runtime-image-en/     # English version
-    └── ...
+└── runtime-image/
+    ├── SKILL.md          # skill 主体(必需)
+    ├── references/       # 补充参考文档
+    └── scripts/          # 辅助脚本
 ```
 
 ## License