Answer architecture round 2: refuse a self-read only inside what the binding lands on, fix the struct.go Layout line, move loneRef beside its caller, and widen item 83 to the link passes

name_test.go

@@ -417,3 +417,9 @@ func TestANameReadAloneIsTheRecordColumnItReads(t *testing.T) {
 		t.Errorf("NewRecordTemplate = %v, want a name-read column accepted inline", err)
 	}
 }
+
+func TestAFieldBindingReadOutsideWhatItBindsLoads(t *testing.T) {
+	if _, err := engine(1).NewTemplate(`{"format":"{x.y as n}{n}{n}{x}","x":{"format":"{z}","y":["a","b"],"z":"{n}"}}`); err != nil {
+		t.Errorf("NewTemplate = %v, want a read of n from x.z, outside x.y, accepted", err)
+	}
+}