fix: handle latex equations when rendering typst

src/export/site.rs

@@ -941,20 +941,29 @@ items:
         let rec = record();
         let frags = solution_fragments(&cat, &rec, &form()).unwrap();
         let open = &frags.iter().find(|(id, _)| id == "q-open").unwrap().1;
-        assert!(open.contains("<div class=\"sol-model\">"), "model answer shown:\n{open}");
+        assert!(
+            open.contains("<div class=\"sol-model\">"),
+            "model answer shown:\n{open}"
+        );
         assert_eq!(
             open.matches("<p class=\"sol-explain\">").count(),
             2,
             "each explanation paragraph is its own styled <p>:\n{open}"
         );
-        assert!(open.contains("folded into H"), "first paragraph present:\n{open}");
+        assert!(
+            open.contains("folded into H"),
+            "first paragraph present:\n{open}"
+        );
         assert!(
             open.contains("reads the enthalpy change directly"),
             "second paragraph present:\n{open}"
         );
         let model_at = open.find("sol-model").unwrap();
         let explain_at = open.find("sol-explain").unwrap();
-        assert!(model_at < explain_at, "model answer comes before the explanation");
+        assert!(
+            model_at < explain_at,
+            "model answer comes before the explanation"
+        );
     }
 
     #[test]
@@ -1016,4 +1025,4 @@ items:
         assert!(assets[0].1.contains(".qsol"));
         assert!(assets[1].1.contains("AES-GCM"));
     }
-}
+}