Commands: ids leave out an object listed with a group that holds it, as the selection does

Commands that read the selection through edit::selected_roots leave
out an object whose group is also selected (edit::roots_of). Fourteen
places that read `ids` kept an object listed together with its group.
Given ids that list an object and a group that holds it, Make Repeat
failed with "no such object", New Symbol failed or stored the object
twice in the symbol, and object.transform moved it twice (20 pt for a
10 pt move).

These places now pass explicit ids through edit::outermost, which
drops an id whose ancestor is also listed, with the filter that
roots_of runs on the selection (now edit::without_inner). Nothing else
is dropped or replaced: unlike roots_of, it keeps layers and
compound-path members. A list without nesting gives the same result as
before. Commands that take both ids and the selection as listed, such
as paint.setFill without item, are unchanged.

Docs: docs/mcp.md, docs/target-app-parity.md.

crates/engine/src/cmd/patterncmds.rs

@@ -17,7 +17,7 @@ use vectorcraft_doc::pattern::{self, Overlap, PATTERN_EDIT_LAYER, PatternDef, Pa
 use vectorcraft_doc::{Document, Node, NodeId, NodeKind, Selection};
 use vectorcraft_geom::Rect;
 
-use super::edit::selected_roots;
+use super::edit::{outermost, selected_roots};
 use super::pathops::Beside;
 use super::*;
 
@@ -203,7 +203,7 @@ fn roots(s: &Session, p: &Value) -> Result<Vec<NodeId>> {
             let st = s.doc()?;
             let mut sel = Selection::default();
             sel.set(ids.iter().copied().filter(|id| st.doc.node(*id).is_some_and(|n| !n.is_layer())));
-            Ok(sel.in_paint_order(&st.doc))
+            Ok(outermost(&st.doc, sel.in_paint_order(&st.doc)))
         }
         None => selected_roots(s),
     }