Persistent naming for sheet metal: base panel edges are named after the base sketch line they lie on, flange edges after their flange (F<feature>.<k>) and side (far / side0 / side1, top or bottom face); flanges and hems store edge names and pick by name first (a name that is gone keeps the point with a warning)

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

crates/doc/src/eval.rs

@@ -1838,7 +1838,7 @@ fn eval_feature(doc: &Document, vals: &BTreeMap<String, Value>, f: &Feature, st:
         | FeatureKind::SheetHem { .. }
         | FeatureKind::SheetFold { .. }
         | FeatureKind::SheetUnfold { .. }
-        | FeatureKind::SheetConvert { .. } => more::sheet_eval(doc, vals, f, st),
+        | FeatureKind::SheetConvert { .. } => more::sheet_eval(doc, vals, f, st, warning),
         FeatureKind::Boss { .. } | FeatureKind::Lip { .. } | FeatureKind::SnapFit { .. } | FeatureKind::Rest { .. } => {
             more::plastic_eval(doc, vals, f, st)
         }