Sheet metal Fold (SheetMetalFoldCmd): fold the base panel along a sketch line (followed when the sketch changes) or two points on its face; angle, bend radius and K-factor from the rule; the bend zone (BA = θ(R + K·T)) comes out of the existing sheet so the flat pattern keeps its size; the line at the bend's centre, start, end or on the mould line; the side holding a picked point stays (default the larger), flip folds down; flanges on the moving part ride along

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

crates/doc/src/eval.rs

@@ -1521,6 +1521,7 @@ fn eval_feature(doc: &Document, vals: &BTreeMap<String, Value>, f: &Feature, st:
         | FeatureKind::SheetContour { .. }
         | FeatureKind::SheetFlange { .. }
         | FeatureKind::SheetHem { .. }
+        | FeatureKind::SheetFold { .. }
         | FeatureKind::SheetUnfold { .. }
         | FeatureKind::SheetConvert { .. } => more::sheet_eval(doc, vals, f, st),
         FeatureKind::Boss { .. } | FeatureKind::Lip { .. } | FeatureKind::SnapFit { .. } | FeatureKind::Rest { .. } => {