Mode Declinaisons QCM/QAT: spec MCQ/FGQ (calibree sur 33 exemples valides), harnais etendu (collisions options multi-graines, arite FGQ, un seul bloc python), filets deterministes (mcqOption, None dernier, fusion blocs), UI mode+types, analyse partagee QCM/QAT, zero regression pythonisation (smoke 45/45)

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