[BUG] spawn ENOENT'.' is not recognized as an internal or external command

[anhdung28888]

Bug Description
Please provide a clear and concise description of what the bug is.

Steps to Reproduce
Please provide the steps to reproduce the bug:

1. Go to "Settings > MCP > Edit MCP Server"
2. Input on "Command"
3. Fill command with white spaces in executable path.
4. Observe the bug.

Expected Results
Success message.

Actual Results
spawn ENOENT'.' is not recognized as an internal or external command,
operable program or batch file.

Make sure you have the following command installed:

Screenshots
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Desktop (please complete the following information):

• Operating System: Windows
• Application Version: 1.19.1

Additional Context
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Bug 描述
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重现步骤
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1. 前往 "......"
2. 点击 "......"
3. 滚动到 "......"
4. 发现了这个 bug。

期望结果
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实际结果
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截图
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桌面端（请填写以下信息）：

• 操作系统：[例如 macOS]
• 应用程序版本：[例如 2.0.1]

其他上下文
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