Fix text wrapping in code editor popup

[Copilot]

The code editing area in the popup was using text wrapping, which made it difficult to read and edit JavaScript code properly. Long lines would wrap to the next line instead of allowing horizontal scrolling, breaking the visual structure of code.

Changes Made

Added white-space: nowrap CSS property to the textarea element to disable automatic text wrapping while preserving line breaks from the Enter key.

Before and After

Before: Long lines wrap automatically, making code harder to read

After: Long lines enable horizontal scrolling instead of wrapping

Multi-line functionality preserved: Line breaks from Enter key still work correctly

Impact

• Improved code readability: Long lines of JavaScript maintain their structure
• Better editing experience: Horizontal scrolling for long lines like typical code editors
• Preserved functionality: Multi-line input and existing features continue to work
• No breaking changes: Minimal CSS-only change with no impact on existing behavior

This change makes the code editor behave more like standard development tools, improving the user experience for writing and editing JavaScript code snippets.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>代码编辑区域 不应该使用折行</issue_title>
<issue_description></issue_description>

Comments on the Issue (you are @copilot in this section)

Fixes #1

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[Copilot]

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[shynur]

not perfect