fix: two things CI caught that the editor never did

The test plexus called an associated function through the module path,
and the Body tool's unknown-verb refusal handed a String to a &str
parameter. The gate earns its keep.

src/core/nervous/plexus.rs

@@ -802,7 +802,7 @@ mod tests {
 
     /// The production field set, on the test clock.
     fn phone_plexus() -> SomaticPlexus {
-        super::phone_plexus(t0())
+        SomaticPlexus::phone_plexus(t0())
     }
 
     fn read(source: &str, amount: f32) -> SensorReading {

src/core/tools/body.rs

@@ -209,11 +209,12 @@ impl Tool for Body {
                 request["verb"] = json!(pv);
             }
             other => {
-                return Err(ToolError::invalid_input(format!(
+                let msg = format!(
                     "I have no verb `{other}`. I can sense {} and do {}.",
                     SENSE_VERBS.join(", "),
                     ACT_VERBS.join(", ")
-                )));
+                );
+                return Err(ToolError::invalid_input(&msg));
             }
         }