Split Face (FusionSplitFaceCommand): a timeline feature dividing the picked faces where a plane, another body's face (its surface extended) or a sketch's curves meet them, through kernel::split_faces; the solid is unchanged and the pieces take the face's name with #k. Rebase fixes: duplicate Chamfer and Combine specs; the Delete selection's face test expects Delete Face's refusal

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

crates/doc/src/params.rs

@@ -34,6 +34,7 @@ impl FeatureKind {
             FeatureKind::Sketch { plane, .. }
             | FeatureKind::ConstructionPlane { plane }
             | FeatureKind::Split { plane, .. }
+            | FeatureKind::SplitFace { plane, .. }
             | FeatureKind::Mirror { plane, .. } => plane_inputs_mut(plane, &mut v),
             FeatureKind::Extrude { extent, .. } => {
                 v.push(("Distance", &mut extent.distance, L));