Adapt the main page for ShadCN + 4 issues resolved

[idanidan29]

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What kind of change does this PR introduce?

adpating the whole main page ot shadcn, and solving desing issues

Issue Number:

• Closes ✨ Enhancement: Add Hover Effects to Cards on Homepage #1592
• Closes 🐛 Bug: Text Overflow Issue in UI Component on Home Page (Mobile View) #1483
• Closes 🐛 Bug: Ui fixes in main page. #1273
• Closes UI: Fix unwanted vertical stretching of content boxes on homepage #1798
• Related to ✨ Enhancement: Refactor Community & Supplemental Components to ShadCN/UI #1660

Screenshots/videos:

Summary

This PR modernizes the homepage UI by refactoring it with the ShadCN component library. It introduces smoother card hover effects, resolves text overflow issues on mobile, and improves visual consistency across the layout. This also aligns the homepage with the overall goal of adopting a modern UI framework.

Does this PR introduce a breaking change?

no

Checklist

Please ensure the following tasks are completed before submitting this pull request.

• Read, understood, and followed the contributing guidelines.

[github-actions]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
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Additional details and impacted files

@@           Coverage Diff            @@
##             main     #1813   +/-   ##
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  Coverage        ?   100.00%           
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  Files           ?        30           
  Lines           ?       633           
  Branches        ?       196           
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  Hits            ?       633           
  Misses          ?         0           
  Partials        ?         0           

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