Backend Automation for Student Enrollment & Admin Access Fixes

[kiirrttii]

What this PR does:
~Automates the creation of StudentProfile and Enrollment records when a new user is added.
~Ensures students are correctly linked to courses based on their program and semester.
~Fixes admin login and superuser access issues to restore full control of the backend.

Technical Details:

1. Student Profile & Enrollment Automation:
2. Uses Django ORM’s get_or_create() to automatically create StudentProfile and Enrollment.
3. Scripts allow bulk creation of student profiles and enrollments for multiple users.
4. Ensures database integrity and correct linking: User → StudentProfile → Enrollment.

Admin & Superuser Fixes:

1. Verified existence of superusers and restored login functionality.
2. Fixed migration and model issues affecting admin access.
3. Ensured that StudentProfile, Course, and Enrollment models are fully accessible via the admin panel.

Impact / Benefits:

1. Reduces manual work for creating student profiles and enrollments.
2. Makes testing and development faster and more reliable.
3. Restores admin functionality, enabling proper management of courses and students.

[codeCraft-Ritik]

Nice implementation — the code is clean and well-structured