fix: use MIN instead of MAX for chatTitle aggregation (GSSOC 26)

[rudra3007-pro]

Description

Replaced MAX(chatTitle) with MIN(chatTitle) in the chat history
session query. MAX() on a string column returns the alphabetically
last value instead of the original chat title, causing incorrect
titles to be displayed.

Related Issue

Closes #289

Type of Change

• Bug fix (non-breaking change that fixes an issue)

Screenshots (if UI change)

N/A — this is a backend query fix with no UI change.

How Has This Been Tested?

• Tested locally with npm run dev
• Verified on mobile viewport (375px)
• Verified on desktop viewport (1440px)

Manually verified that the returned chatTitle matches the original
title created for the chat session after switching to MIN().

Checklist

• I have tested my changes locally (npm run dev)
• My code follows the existing code style (TypeScript, Tailwind, no any types)
• I have not introduced unrelated changes (each PR should address one issue)
• I have added comments where necessary
• My branch is up to date with main
• I have linked the related issue above
• Screenshots are included (if this is a UI change)

[vercel]

@rudra3007-pro is attempting to deploy a commit to the Karan Mani Tripathi 's projects Team on Vercel.

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[github-actions]

Technical Review

Hi @rudra3007-pro! Thank you for your contribution to DoubtDesk.

The code changes look good. Before we can complete the technical review, approve, and merge this pull request, we have one final requirement for all contributors: Please star the DoubtDesk repository.

Once you have starred the repository, please drop a comment here saying "done" (or we will automatically detect it) and we will proceed with approving and merging your PR. Thank you.

[github-actions]

Hello there! 🎉 Thank you so much for your first pull request to DoubtDesk!

We really appreciate your contribution. A maintainer will review your code soon. If you are participating in GSSoC, ensure your PR is linked to an open issue. Please make sure you have followed all rules in our Contributing Guidelines. Happy coding!

[rudra3007-pro]

done

Technical Review

Hi @rudra3007-pro! Thank you for your contribution to DoubtDesk.

The code changes look good. Before we can complete the technical review, approve, and merge this pull request, we have one final requirement for all contributors: Please star the DoubtDesk repository.

Once you have starred the repository, please drop a comment here saying "done" (or we will automatically detect it) and we will proceed with approving and merging your PR. Thank you.

[knoxiboy]

Automated review: Thank you for starring the repository! The PR is approved.