Adds a mode selector on the start screen:
- Directe feedback (existing): explanation shown after each question, timer pauses
- Examenmodus (new): all questions answered back-to-back with timer running, then a full review section on the result screen showing wrong answers (always) and correct answers (toggleable)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Small muted footer below all screens crediting PeopleCert International Ltd
and noting personal study use only.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
After shuffleQuestion() reorders answers, the hardcoded A–D prefix in
each explanation text no longer matched the displayed option letter.
Replace the leading letter dynamically based on the shuffled position.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
