Backend Implementation Phase 4 (Task-22, 23, 24)

[Rakshit-maheshwari-rm]

Hi,

I would like to contribute to this project by working on Backend Phase 4 — Mock Test Engine (Part 1). I will be handling the following tasks:

• Design questions table: id, type (speaking/writing/reading/listening), subtype, difficulty (1-5), content (JSONB), audio_url, correct_answer, scoring_rubric (JSONB), created_at
• Design mock_tests table: id, title, description, duration_minutes, total_questions, is_full_test, created_by, created_at
• Design mock_test_questions join table: test_id, question_id, order_index

Please assign this issue to me. I will submit a Pull Request once completed.

Thanks!
SSoC26