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

inline.go

@@ -206,3 +206,11 @@ func linkNodeRefs(scope nodeScope, root map[string]node) error {
 	}
 	return nil
 }
+
+// loneRef is the reference a format of one reference token and nothing else reads.
+func loneRef(toks []formatToken) (string, bool) {
+	if len(toks) != 1 || toks[0].kind != nameRead || len(toks[0].names) != 1 || !isRef(toks[0].names[0]) {
+		return "", false
+	}
+	return toks[0].names[0], true
+}