move himalaya wrapper from skills/himalaya/ to scripts/

The himalaya skill is a third-party ClawhHub package — putting custom
scripts inside it risks conflicts on updates. The wrapper is local
customization, so it belongs in scripts/ alongside email_processor.

TOOLS.md

@@ -28,14 +28,14 @@ Skills define _how_ tools work. This file is for _your_ specifics — the stuff
 
 **本地配置：**
 - 二进制：`~/.local/bin/himalaya`
-- **安全包装器**：`~/.openclaw/workspace/skills/himalaya/scripts/himalaya.sh`（验证收件人）
+- **安全包装器**：`~/.openclaw/workspace/scripts/himalaya.sh`（验证收件人）
 - 配置：`~/.config/himalaya/config.toml`
 - 文档：`~/.openclaw/workspace/skills/himalaya/SKILL.md`
 
 **重要：发送邮件时必须使用包装器，不要直接调用 himalaya**
 
 ```bash
-HIMALAYA=~/.openclaw/workspace/skills/himalaya/scripts/himalaya.sh
+HIMALAYA=~/.openclaw/workspace/scripts/himalaya.sh
 
 $HIMALAYA envelope list --page-size 20    # 列出邮件（直接透传）
 $HIMALAYA message read <id>               # 读取邮件（直接透传）