here is mutual recursion that potentially is a bug

I can generate txt file with test input for ~550 restarts and I will get an exception

```bash
% cat src/pegthing/data.txt | lenin run > /dev/null
Execution error (StackOverflowError) at java.lang.ClassLoader/findLoadedClass (ClassLoader.java:1232).
null

Full report at:
/tmp/clojure-12838998477726805256.edn
```

[data.txt](https://github.com/user-attachments/files/25312730/data.txt)