Add core game retry flow and question stats

api/QuestionsApi/Controllers/QuestionsController.cs

@@ -126,6 +126,8 @@ public class QuestionsController : ControllerBase
             return "correctChoiceId must match a choice id";
         if (string.IsNullOrWhiteSpace(req.Explanation))
             return "explanation required";
+        if (req.ChoiceSelectionPercentages.Any(entry => entry.Value is < 0 or > 100))
+            return "choiceSelectionPercentages values must be between 0 and 100";
         if (string.IsNullOrWhiteSpace(req.System))
             return "system required";
         if (string.IsNullOrWhiteSpace(req.Discipline))

api/QuestionsApi/Models/Question.cs

@@ -16,6 +16,7 @@ public class Question
     public string CorrectChoiceId { get; set; } = "";
     public string Explanation { get; set; } = "";
     public Dictionary<string, string> ChoiceExplanations { get; set; } = [];
+    public Dictionary<string, int> ChoiceSelectionPercentages { get; set; } = [];
     public string Discipline { get; set; } = "";
     public string System { get; set; } = "";
     public int Difficulty { get; set; } = 1;

api/QuestionsApi/Models/QuestionRequests.cs

@@ -19,6 +19,7 @@ public class UpsertQuestionRequest
     public string CorrectChoiceId { get; set; } = "";
     public string Explanation { get; set; } = "";
     public Dictionary<string, string> ChoiceExplanations { get; set; } = [];
+    public Dictionary<string, int> ChoiceSelectionPercentages { get; set; } = [];
     public string Discipline { get; set; } = "";
     public string System { get; set; } = "";
     public int Difficulty { get; set; } = 1;

api/QuestionsApi/Models/QuestionResponse.cs

@@ -10,6 +10,7 @@ public class QuestionResponse
     public string CorrectChoiceId { get; set; } = "";
     public string Explanation { get; set; } = "";
     public Dictionary<string, string> ChoiceExplanations { get; set; } = [];
+    public Dictionary<string, int> ChoiceSelectionPercentages { get; set; } = [];
     public string Discipline { get; set; } = "";
     public string System { get; set; } = "";
     public int Difficulty { get; set; }
@@ -27,6 +28,7 @@ public class QuestionResponse
         CorrectChoiceId = question.CorrectChoiceId,
         Explanation = question.Explanation,
         ChoiceExplanations = question.ChoiceExplanations,
+        ChoiceSelectionPercentages = question.ChoiceSelectionPercentages,
         Discipline = question.Discipline,
         System = question.System,
         Difficulty = question.Difficulty,

api/QuestionsApi/Services/QuestionStore.cs

@@ -133,6 +133,7 @@ public class QuestionStore
         CorrectChoiceId = req.CorrectChoiceId.Trim(),
         Explanation = req.Explanation.Trim(),
         ChoiceExplanations = req.ChoiceExplanations,
+        ChoiceSelectionPercentages = req.ChoiceSelectionPercentages,
         Discipline = req.Discipline.Trim(),
         System = req.System.Trim(),
         Difficulty = req.Difficulty,