chore: bump codec d28fd71, kernel a03e4f0, graph 79bdc4b

Codec: PRs #71-#74 merged (MPOLYGON layout, multiline ATTDEF/ATTRIB DXF,
DXF MATERIAL/ACSH matrix, restorable SAT/SAB + history roots) and issues
#55 #64-#69 fixed. EntityType now boxes Surface, Extended, Table,
MultiLeader and Helix (2344 B -> 848 B per entity): construction sites
wrap in Box, the entity traits forward through Box, and the python
plugin generator converts with into(). Kernel: PR #70 (cuboid ring
winding).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/app/model_ops.rs

@@ -1354,7 +1354,7 @@ impl super::OpenCADStudio {
                     let mut entity = Surface::new(SurfaceKind::Generic);
                     entity.common = group.common;
                     self.add_surface_model_preserving_style(
-                        EntityType::Surface(entity),
+                        EntityType::Surface(Box::new(entity)),
                         group.body,
                     )
                 }
@@ -2316,7 +2316,7 @@ impl super::OpenCADStudio {
         }
         let n = surfaces.len();
         for surf in surfaces {
-            self.tabs[i].scene.add_entity(EntityType::Surface(surf));
+            self.tabs[i].scene.add_entity(EntityType::Surface(Box::new(surf)));
         }
         self.tabs[i].dirty = true;
         self.refresh_properties();