chore: add dropped question to reports

src/export/typst/diagnostic.rs

@@ -299,6 +299,7 @@ pub fn student_value(diagnostic: &StudentDiagnostic, config: &RenderConfig) -> V
                     value.insert_some("correct", question.correct.map(Value::Bool));
                     value.insert("credit", Value::Float(question.credit));
                     value.insert("bonus", Value::Bool(question.bonus));
+                    value.insert("dropped", Value::Bool(question.dropped));
                     value.insert("blank", Value::Bool(question.blank));
                     value.insert_some("class-rate", question.class_rate.map(Value::Float));
                     value.insert(
@@ -348,6 +349,17 @@ pub fn student_value(diagnostic: &StudentDiagnostic, config: &RenderConfig) -> V
         ),
     );
 
+    out.insert(
+        "dropped-questions",
+        Value::Array(
+            diagnostic
+                .dropped_questions
+                .iter()
+                .map(|n| Value::Int(*n as i64))
+                .collect(),
+        ),
+    );
+
     out.insert(
         "review-lectures",
         Value::Array(
@@ -612,6 +624,17 @@ pub fn cohort_value(diagnostic: &CohortDiagnostic, config: &RenderConfig) -> Val
         ),
     );
 
+    out.insert(
+        "dropped-questions",
+        Value::Array(
+            diagnostic
+                .dropped_questions
+                .iter()
+                .map(|n| Value::Int(*n as i64))
+                .collect(),
+        ),
+    );
+
     let triage_rows = |rows: &[crate::diagnostic::TriageRow]| -> Value {
         Value::Array(rows.iter().map(|row| triage_value(row, content)).collect())
     };
@@ -1128,6 +1151,7 @@ mod tests {
             gaps: Vec::new(),
             grades: Vec::new(),
             lectures: Vec::new(),
+            dropped_questions: Vec::new(),
             questions: Vec::new(),
             triage: crate::diagnostic::Triage::default(),
             predictions: crate::diagnostic::PredictionSummary::default(),