Display tessellation plans (3/4): display meshes from plans, GPU evaluation in the viewport (#805)

Display meshes are built from tessellation plans, with GPU evaluation in the viewport.

Cargo.lock

@@ -3345,6 +3345,18 @@ dependencies = [
  "thiserror 2.0.21",
 ]
 
+[[package]]
+name = "solidcraft-gpu"
+version = "0.8.0"
+dependencies = [
+ "log",
+ "pollster 0.4.0",
+ "solidcraft-geom",
+ "solidcraft-kernel",
+ "thiserror 2.0.21",
+ "wgpu",
+]
+
 [[package]]
 name = "solidcraft-io"
 version = "0.9.0"
@@ -3415,9 +3427,11 @@ dependencies = [
  "egui-wgpu",
  "image",
  "log",
+ "pollster 0.4.0",
  "serde",
  "serde_json",
  "solidcraft-engine",
+ "solidcraft-gpu",
  "ttf-parser",
  "web-time",
 ]