Merge branch 'sparkmentis:main' into main

pushed
subh05sus/sparkmentis-fork10:34 AM - Sep 22, 2025
Rohit-Dnath
subh05sus

On the main branch, subh05sus merged in sparkmentis’s updates and Rohit-Dnath added a full “Assignment Grader” prompt template (with rubric support, dynamic fields, UI enhancements and backend wiring in AIGradingService), along with some basic UX improvements like custom scrollbars, prompt-editor tweaks and a route rename.