fix: update interview grading logic in views.py

feat: restrict interview list to recruiter who created the job

feat: display all questions vertically, overwrite questions on import, and fix dynamic WebSocket URL

fix: escape JS curly braces in Codeforces starter code f-string for Python 3.11 compatibility

feat: multi-language code editor, recruiter question controls, dashboard heatmap & photo card

feat: mobile responsiveness + redesigned interview portals with Supabase integration

Ui and backend changes