refactor(engine): flatten

- add `just stats`
- add basic doctests

Justfile

@@ -115,3 +115,43 @@ sampler:
   {{debug}} sampler
 plugin:
   {{debug}} plugin
+
+
+@stats:
+  echo
+
+  for file in $(ls app/*.rs); do echo $file; cloc $file | grep Rust; done
+  echo
+  cloc app | grep Rust
+  rg 'pub struct ' app/ | cat
+  rg 'pub struct ' app/ | wc -l
+  rg 'pub trait ' app/ | cat
+  rg 'pub trait ' app/ | wc -l
+  echo
+  rg 'TODO' app/ | cat
+  rg 'TODO' app/ | wc -l
+  echo
+
+  for file in $(ls engine/*.rs); do echo $file; cloc $file | grep Rust; done
+  echo
+  cloc engine | grep Rust
+  rg 'pub struct ' engine/ | cat
+  rg 'pub struct ' engine/ | wc -l
+  rg 'pub trait ' engine/ | cat
+  rg 'pub trait ' engine/ | wc -l
+  echo
+  rg 'TODO' engine/ | cat
+  rg 'TODO' engine/ | wc -l
+  echo
+
+  for file in $(ls device/*.rs); do echo $file; cloc $file | grep Rust; done
+  echo
+  cloc device | grep Rust
+  rg 'pub struct ' device/ | cat
+  rg 'pub struct ' device/ | wc -l
+  rg 'pub trait ' device/ | cat
+  rg 'pub trait ' device/ | wc -l
+  echo
+  rg 'TODO' device/ | cat
+  rg 'TODO' device/ | wc -l
+  echo