feat: more comprehensive cohort report

src/export/typst/diagnostic.rs

@@ -620,6 +620,18 @@ pub fn cohort_value(diagnostic: &CohortDiagnostic, config: &RenderConfig) -> Val
                 .collect(),
         ),
     );
+    // Separate from `questions` so no statistic can pick them up, and merged
+    // back in by the evidence section, which describes rather than measures.
+    out.insert(
+        "dropped-detail",
+        Value::Array(
+            diagnostic
+                .dropped_detail
+                .iter()
+                .map(|q| cohort_question_value(q, content))
+                .collect(),
+        ),
+    );
 
     out.insert(
         "grades",
@@ -872,6 +884,18 @@ fn cohort_question_value(question: &CohortQuestionRow, content: bool) -> Value {
                 .collect(),
         ),
     );
+    value.insert_some(
+        "stem",
+        question
+            .stem
+            .as_ref()
+            .map(|text| markup_value(text, content)),
+    );
+    value.insert("dropped", Value::Bool(question.dropped));
+    value.insert(
+        "dropped-full-credit",
+        Value::Bool(question.dropped_full_credit),
+    );
     value.insert(
         "taught-in",
         Value::Array(question.taught_in.iter().map(Value::str).collect()),
@@ -902,6 +926,27 @@ fn cohort_question_value(question: &CohortQuestionRow, content: bool) -> Value {
                 .map(|option| {
                     let mut value = Value::dict();
                     value.insert("letter", Value::str(&option.letter));
+                    value.insert_some(
+                        "text",
+                        option.text.as_ref().map(|text| markup_value(text, content)),
+                    );
+                    // The letter on each paper, so a statistic reported against
+                    // the bank letter can be checked against a student's copy.
+                    value.insert(
+                        "printed",
+                        Value::Array(
+                            option
+                                .printed
+                                .iter()
+                                .map(|printed| {
+                                    let mut pair = Value::dict();
+                                    pair.insert("form", Value::str(&printed.form));
+                                    pair.insert("letter", Value::str(&printed.letter));
+                                    pair
+                                })
+                                .collect(),
+                        ),
+                    );
                     value.insert("count", Value::Int(option.count as i64));
                     value.insert("rate", Value::Float(option.rate));
                     value.insert("is-key", Value::Bool(option.is_key));