Organize Iris support files

app/src/client/log_ring.rs

@@ -262,8 +262,7 @@ fn is_own_target(target: &str) -> bool {
         || target.starts_with("ai_app::")
 }
 
-/// This is the one filter docs/IRIS_TODO.md's "logs way too big" entry
-/// asked for, applied once here rather than at each `debug!` call site:
+/// Applied once here rather than at each `debug!` call site:
 /// Info and above always ring, from anything, because a real warning or
 /// error from a dependency is worth keeping. Debug and Trace ring only
 /// from this app's own targets, and only while tracing is switched on --