feat: node graph overlay; move to opencadcodec/opencadkernel/opencadgraph

The codec and kernel repositories and crates are renamed opencadcodec and
opencadkernel. Inside OCS they are depended on under short keys, so code
reads `codec::`, `kernel::` and the new `graph::` (opencadgraph, the node
graph engine). File-format and protocol spellings stay as they were: the
ACIS product id `acadrust`, the ACADRUST_* switches and the plugin
version keys `acadrust_version` / `acadrust_source`.

A button left of MCP on the command line opens a translucent node graph
over the viewport, with a palette of object, input, math, logic, list,
text and geometry nodes added by click or drag. An object node owns
drawing entities and its rows are the Properties panel's own rows for
them: the single-object page is extracted from refresh_properties as
entity_property_sections, values use the control protocol's
property_json, and writes go through set_property_value with a property
target override, so the panel, MCP and the graph share one read/write
path. A list reaching an object row makes one entity per element. Each
graph action is one undo step; the canvas pans and zooms.

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

src/modules/insert/solid3d_cmds.rs

@@ -2,7 +2,7 @@
 
 use std::sync::{Mutex, OnceLock};
 
-use acadrust::{entities::Solid3D, EntityType, Handle};
+use codec::{entities::Solid3D, EntityType, Handle};
 use glam::DVec3;
 
 use crate::command::{
@@ -166,16 +166,16 @@ impl ExtrudeCommand {
 }
 
 fn preview_body_wires(
-    body: &cadkernel::brep::Body,
+    body: &kernel::brep::Body,
     color: [f32; 4],
     isolines: usize,
 ) -> Vec<WireModel> {
     // This overlay only consumes curves. Do not triangulate the body's faces
     // on every cursor event just to discard the resulting surface mesh.
-    let wireframe = cadkernel::brep::mesh::tessellate_wireframe(
+    let wireframe = kernel::brep::mesh::tessellate_wireframe(
         body,
-        cadkernel::brep::mesh::TessellationTolerance::new(
-            cadkernel::tessellation::DEFAULT_ANGLE,
+        kernel::brep::mesh::TessellationTolerance::new(
+            kernel::tessellation::DEFAULT_ANGLE,
             1e-9,
         )
         .with_isolines(isolines),
@@ -899,12 +899,12 @@ impl CadCommand for PresspullCommand {
                 crate::scene::model::presspull_model::profile_geometry(&entity)
                     .map(|(plane, loops, _)| (plane, loops)),
             PresspullTargetKind::Face { body, face, .. } =>
-                cadkernel::brep::planar_face_profile(&body, face)
+                kernel::brep::planar_face_profile(&body, face)
                     .map(|profile| (profile.plane, profile.loops)),
         };
         if let Some((plane, loops)) = geometry {
             self.hover_cache = loops.into_iter().flatten().filter_map(|curve| {
-                let points = curve.tessellate_angle(cadkernel::tessellation::DEFAULT_ANGLE)
+                let points = curve.tessellate_angle(kernel::tessellation::DEFAULT_ANGLE)
                     .into_iter().map(|point| plane.point_at(point)).collect::<Vec<_>>();
                 (points.len() >= 2).then(|| {
                     let mut wire = WireModel::solid_f64(
@@ -918,7 +918,7 @@ impl CadCommand for PresspullCommand {
         self.hover_cache.clone()
     }
 
-    fn on_entity_pick(&mut self, handle: acadrust::Handle, point: DVec3) -> CmdResult {
+    fn on_entity_pick(&mut self, handle: codec::Handle, point: DVec3) -> CmdResult {
         if !self.needs_entity_pick() {
             return CmdResult::NeedPoint;
         }
@@ -1278,7 +1278,7 @@ impl RevolveCommand {
 }
 
 fn revolve_axis(entity: &EntityType) -> Option<(DVec3, DVec3)> {
-    let point = |value: &acadrust::types::Vector3| DVec3::new(value.x, value.y, value.z);
+    let point = |value: &codec::types::Vector3| DVec3::new(value.x, value.y, value.z);
     let (start, direction) = match entity {
         EntityType::Line(line) => (point(&line.start), point(&line.end) - point(&line.start)),
         EntityType::Ray(ray) => (point(&ray.base_point), point(&ray.direction)),
@@ -1346,7 +1346,7 @@ impl CadCommand for RevolveCommand {
     fn needs_entity_pick(&self) -> bool {
         self.step == RevolveStep::AxisObject
     }
-    fn on_entity_pick(&mut self, handle: acadrust::Handle, _pt: DVec3) -> CmdResult {
+    fn on_entity_pick(&mut self, handle: codec::Handle, _pt: DVec3) -> CmdResult {
         if handle.is_null() {
             return CmdResult::NeedPoint;
         }
@@ -2777,8 +2777,8 @@ pub fn empty_solid3d() -> EntityType {
 }
 
 pub fn empty_extruded_surface(direction: DVec3, taper_angle: f64) -> EntityType {
-    use acadrust::entities::{Surface, SurfaceData, SurfaceKind};
-    use acadrust::types::Vector3;
+    use codec::entities::{Surface, SurfaceData, SurfaceKind};
+    use codec::types::Vector3;
 
     let mut surface = Surface::new(SurfaceKind::Extruded);
     surface.u_isolines = 6;
@@ -2803,8 +2803,8 @@ pub fn empty_revolved_surface(
     angle: f64,
     start_angle: f64,
 ) -> EntityType {
-    use acadrust::entities::{Surface, SurfaceData, SurfaceKind};
-    use acadrust::types::Vector3;
+    use codec::entities::{Surface, SurfaceData, SurfaceKind};
+    use codec::types::Vector3;
 
     let mut surface = Surface::new(SurfaceKind::Revolved);
     let axis = (axis_end - axis_start).normalize_or(DVec3::Z);
@@ -2853,7 +2853,7 @@ mod extrude_command_tests {
         command.set_preselection(
             vec![(
                 Handle::new(1),
-                EntityType::Circle(acadrust::entities::Circle::new()),
+                EntityType::Circle(codec::entities::Circle::new()),
             )],
             DVec3::ZERO,
             Some(DVec3::Z),
@@ -2875,7 +2875,7 @@ mod revolve_tests {
 
     #[test]
     fn cursor_angle_is_measured_about_the_model_axis() {
-        let profile = EntityType::Line(acadrust::entities::Line::from_coords(
+        let profile = EntityType::Line(codec::entities::Line::from_coords(
             2.0, 0.0, 0.0, 2.0, 4.0, 0.0,
         ));
         let mut command = RevolveCommand::new([1.0; 4], 0);
@@ -2908,8 +2908,8 @@ mod thicken_command_tests {
     fn thicken_filters_selection_recovers_from_invalid_text_and_measures_two_points() {
         let handle = Handle::new(42);
         let mut command = ThickenCommand::new(vec![
-            (Handle::new(1), EntityType::Line(acadrust::entities::Line::default())),
-            (handle, EntityType::Surface(acadrust::entities::Surface::new(acadrust::entities::SurfaceKind::Plane))),
+            (Handle::new(1), EntityType::Line(codec::entities::Line::default())),
+            (handle, EntityType::Surface(codec::entities::Surface::new(codec::entities::SurfaceKind::Plane))),
         ]);
         assert!(!command.is_selection_gathering());
         assert_eq!(command.handles, vec![handle]);