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/buildcmds.rs

@@ -24,7 +24,7 @@ use vectorcraft_tools::builder::{
 };
 use vectorcraft_trace as tr;
 
-use super::edit::selected_roots;
+use super::edit::{outermost, selected_roots};
 use super::paint::paint_from;
 use super::pathops::{Beside, shape_node};
 use super::*;
@@ -192,7 +192,7 @@ fn root_ids(s: &Session, p: &Value) -> Result<Vec<NodeId>> {
     if ids.is_empty() {
         return Err(EngineError::Other("select objects, not layers".into()));
     }
-    Ok(sorted_roots(d, &ids))
+    Ok(outermost(d, sorted_roots(d, &ids)))
 }
 
 fn points_param(p: &Value, key: &str) -> Option<Vec<Point>> {