diff --git a/crates/aura-cli/src/main.rs b/crates/aura-cli/src/main.rs
index 4db7174..e3ecc39 100644
--- a/crates/aura-cli/src/main.rs
+++ b/crates/aura-cli/src/main.rs
@@ -209,9 +209,11 @@ fn signals(name: &str) -> Composite {
 
 /// The sample signal-quality blueprint (value-empty) **with its two recording
 /// sinks reachable**: returns the equity + exposure receivers a per-point sweep
-/// run drains (the SMA lengths + exposure scale are injected at compile via the
-/// point vector). The single source of the sample topology — `build_sample`
-/// (the `aura graph` entry) is expressed on top of it.
+/// run drains (the eight free params — the trend SMA lengths, the momentum EMA
+/// lengths, the two open blend weights, and the exposure scale — are injected at
+/// compile via the point vector). The root harness of the sample topology, whose
+/// signal is built by the nested `signals` composite; `build_sample` (the `aura
+/// graph` entry) is expressed on top of it.
 #[allow(clippy::type_complexity)]
 fn sample_blueprint_with_sinks() -> (
     Composite,
diff --git a/crates/aura-engine/src/graph_model.rs b/crates/aura-engine/src/graph_model.rs
index 7edd8b3..8ba8460 100644
--- a/crates/aura-engine/src/graph_model.rs
+++ b/crates/aura-engine/src/graph_model.rs
@@ -302,9 +302,11 @@ mod tests {
     /// A small, stable root harness exercising the four model elements: a bound
     /// source role (`price`, → a synthetic source node), a composite reference
     /// (`sma_cross`, → a `composites` entry), a plain node (`Exposure`), and a
-    /// sink (`Recorder`, `output: vec![]`). Mirrors `build_sample()`
-    /// (aura-cli/src/main.rs:161-190); the Recorder receiver is dropped because
-    /// the model serializer never runs the graph.
+    /// sink (`Recorder`, `output: vec![]`). A deliberately minimal serializer
+    /// fixture, independent of the CLI's built-in sample (`build_sample` in
+    /// aura-cli — a richer nested `signals` graph since cycle 0036), kept small so
+    /// this golden stays stable; the Recorder receiver is dropped because the
+    /// model serializer never runs the graph.
     fn sample_root() -> Composite {
         let (tx, _rx) = mpsc::channel();
         Composite::new(