对话框左右侧调整

[stakje]

Feature hasn't been suggested before.

• I have verified this feature I'm about to request hasn't been suggested before.

Describe the enhancement you want to request

功能描述

希望在 OpenCode 的桌面端或 TUI 中增加对话框布局位置切换功能，
允许用户将对话面板从默认左侧切换到右侧显示。

使用场景

• 配合宽屏或双屏使用时，把对话面板放右侧更方便查看代码编辑区域
• 不同用户有不同的阅读/操作习惯
• 部分 IDE 扩展放置在右侧时与代码区的视线切换更自然

[github-actions]

This issue doesn't fully meet our contributing guidelines.

What needs to be fixed:

• The title should start with [FEATURE]: for feature requests (e.g. [FEATURE]: 对话框左右侧调整)

Please edit this issue to address the above within 2 hours, or it will be automatically closed.

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This issue might be a duplicate of existing issues. Please check:

• [FEATURE]: Add option to swap left/right panel layout #16349: [FEATURE]: Add option to swap left/right panel layout — same request to allow swapping the left/right panel positions

If you believe this was flagged incorrectly, please let a maintainer know.

[github-actions]

This issue has been automatically closed because it was not updated to meet our contributing guidelines within the 2-hour window.

Feel free to open a new issue that follows our issue templates.