Improve student activity registration system#2

Merged

TsasAL merged 3 commits intomainfrom

accelerate-with-copilot

Dec 1, 2025

Commits on Dec 1, 2025

Add extracurricular activities and signup validation to API
TsasAL
committed
Add participants section to activity cards with styling
TsasAL
committed
Implement activity participant management with signup and unregister functionality
TsasAL
committed