Added mark symbol for already recorded data

Description:

Briefly describe your changes.

Type of Change:

• Bug Fix
• Feature Development
• Documentation

Testing:

• Tested on desktop
• Tested on mobile
• Tested in different browsers

Screenshots (if applicable):

Add screenshots for UI changes. Video Demo

Add a link to the demo of the PR

If you have used AI create this PR, please also record video of yourself explaining the changes.

Link to code walkthrough

Checklist:

• Code follows project style guidelines
• Self-review completed
• No console errors
• JavaScript types are correct