Refactor the D&D spells module to apply deterministic fields where appropriate

internal/modules/sharedassets/dnd/unit_refs.go

@@ -40,6 +40,10 @@ func (ref UnitRef) String() string {
 	return strconv.Itoa(ref.value)
 }
 
+func (ref UnitRef) Int() int {
+	return ref.value
+}
+
 func (ref *UnitRef) UnmarshalJSON(raw []byte) error {
 	raw = bytes.TrimSpace(raw)
 	if len(raw) == 0 {

internal/modules/sharedassets/dnd/unit_refs_test.go

@@ -16,6 +16,9 @@ func TestUnitRefUnmarshalAcceptsIntegerAndNumericString(t *testing.T) {
 	if got := integerRef.String(); got != "12" {
 		t.Fatalf("integer ref = %q, want 12", got)
 	}
+	if got := integerRef.Int(); got != 12 {
+		t.Fatalf("integer ref value = %d, want 12", got)
+	}
 
 	var stringRef UnitRef
 	if err := json.Unmarshal([]byte(`"12"`), &stringRef); err != nil {