[A11Y] Ensure all external anchor links use `rel="noopener noreferrer"`

[Aditya948351]

Several external links in the application are missing the rel="noopener noreferrer" attribute. This is both a security risk and a lighthouse performance penalty. Audit src/components/ and fix all target="_blank" links.

[nishupr]

Hi @Aditya948351! I'd like to work on this issue. I'll audit all files under src/components/ and ensure every target="_blank" anchor link has rel="noopener noreferrer" to fix the security vulnerability and improve Lighthouse scores.
Could you please assign this to me?

[github-actions]

Hi @nishupr! We have officially assigned this issue to you. Please start working on it, and good luck with your PR!

ETA: 3 days
Issue will be assigned to another contributor if failed to do so!

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