Paperclip CTO b59d06fddc feat(TRA-239): implement Quiz Engine — SC/MC + short answer with deterministic randomization ...

- Quiz, Question, Choice, QuizAttempt, QuestionResponse models with migrations
- seed-based deterministic randomization for questions and choices per attempt
- SC/MC grading (all-or-nothing per question), short-answer regex/keyword matching
- submit_attempt: grades all responses, computes score_percent, marks passed/failed
- DRF API: start attempt, submit response, submit (finalize) attempt, quiz detail
- 25 unit + integration tests covering grading correctness, boundary conditions,
  randomization reproducibility, API flows, and access control

Co-Authored-By: Paperclip <noreply@paperclip.ing>

2026-05-07 09:15:18 +02:00

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