improve PrepBuddy Assistant

[RiyaAtmaj]

Is your feature request related to a problem? Please describe.
we can put a cartoon image on the bot. Cartoon avatar (friendly robot with book/glasses → “study buddy” vibe).

Describe the solution you'd like
A robot with a graduation cap and a notepad/laptop → directly shows “study assistant".

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.

[github-actions]

Thank you for raising this issue!

We'll review it as soon as possible. We truly appreciate your contributions! ✨

Meanwhile make sure you've visited the README.md, CONTRIBUTING.md, and CODE_OF_CONDUCT.md before creating a PR for this. Also, please do NOT create a PR until this issue has been assigned to you. 😊

[RiyaAtmaj]

Assign it to me I’ll work on creating a cartoon-style PrepBuddy Assistant avatar, friendly robot with graduation cap and notepad/laptop, possibly with subtle animations.