feat: Add Delete Button for Strategy Prompts

[PotatoZhou]

📝 Pull Request Template

1. Related Issue

Closes #527

2. Type of Change (select one)

Type of Change: New Feature

3. Description

Add Delete Button for Strategy Prompts

4. Testing

• I have tested this locally.
• I have updated or added relevant tests.

5. Checklist

• I have read the Code of Conduct
• I have followed the Contributing Guidelines
• My changes follow the project's coding style

[vcfgv]

Thank you for the contribution!

Could you please attach a screenshot or a brief demo showing what the frontend looks like with the new Delete button? It would be helpful to visualize the changes.

[PotatoZhou]

sure will do :)

[PotatoZhou]

As shown in the figure, The delete button will appear on hover, and a confirmation dialog will pop up when clicked. The prompt will only be deleted once the user clicks the 'Confirm Delete' button.

[vcfgv]

Thanks for the feedback! Please confirm whether these two icons are properly aligned.

[PotatoZhou]

The delete icon and select icon are now properly aligned as shown in the figure, as they now have matching container sizes

[vcfgv]

@DigHuang Do you have any comments?