Flag Streak

- Added Mistake Notebook: wrong answers are now saved and queued for daily retraining. - Improved Daily Retrain drills with smarter auto-stop points (question/time caps) and continue flow. - Added result sharing as a branded image snapshot. - Added optional Country Facts after answers (capital, population, equator position, and neighbors), localized for English and Dutch. - Fixed the Settings sheet layout on small iPhones so all options remain visible.