Persistent naming, step 1 (plan/adr/0002): faces are named from their history (a face lying on an input face keeps its name; new faces by role: F<feature>:side:<sketch curve>, :start/:top/:bottom caps, :blend:<edge>, …; split pieces #k along their spread), edges by the faces they separate (pieces ~k); names worked out lazily per body and shared by its clones; fillets and chamfers store edge names and resolve by name first (a split edge takes the piece nearest the picked point with a warning, a vanished one falls back to the point with a warning); model.faces and model.edges report names; tests for resize, suppress, reorder, an upstream split and a removed sketch segment

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AS5Tn3xieewUSg3uxrMVdL

crates/engine/src/cmd/edit.rs

@@ -189,7 +189,9 @@ fn edit_feature(s: &mut Session, p: &Value) -> Result<Value> {
     ) = (&nf.kind, &f.kind)
         && a != b
     {
-        nf.edge_refs = solvecraft_doc::edge_refs(&s.model.state_before(id), body, a);
+        let before = s.model.state_before(id);
+        nf.edge_refs = solvecraft_doc::edge_refs(&before, body, a);
+        nf.edge_names = solvecraft_doc::edge_names_for(&before, body, a);
     }
     if let Some(slot) = s.doc_mut().feature_mut(id) {
         *slot = nf;