Reject ambiguous origin and construction plane names (#247)

* Reject ambiguous origin and construction plane names

* Reserve origin plane names for construction planes; suggest the other alias

A construction plane can no longer be created with or renamed to XY, XZ, YZ, Top, Front or
Right, so a plane argument can't become ambiguous in new designs. For older designs that
already hold such a plane, the ambiguity error now also names the origin plane's other
alias (XY for Top...). The existing tests build those legacy names directly.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

---------

Co-authored-by: bherbruck <brennen.herbruck@gmail.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

crates/engine/src/cmd/edit.rs

@@ -145,6 +145,9 @@ fn rename(s: &mut Session, p: &Value) -> Result<Value> {
     if s.doc.features.iter().any(|f| f.name == name && f.id != id) {
         return Err(bad(cmd, format!("another feature is called `{name}`")));
     }
+    if s.doc.feature(id).is_some_and(|f| matches!(f.kind, FeatureKind::ConstructionPlane { .. })) {
+        super::features::check_plane_name(name, cmd)?;
+    }
     if let Some(f) = s.doc_mut().feature_mut(id) {
         f.name = name.to_string();
     }