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 <[email protected]>

src/scene/view/transform.rs

@@ -1,4 +1,4 @@
-use acadrust::types::{Transform, Vector3};
+use codec::types::{Transform, Vector3};
 use glam::DVec3;
 
 use crate::command::EntityTransform;
@@ -10,7 +10,7 @@ fn to_v3(v: DVec3) -> Vector3 {
 
 pub fn apply_standard_transform<T>(entity: &mut T, center: DVec3, axis: DVec3, angle_rad: f64)
 where
-    T: acadrust::Entity,
+    T: codec::Entity,
 {
     let t = Transform::from_translation(to_v3(-center))
         .then(&Transform::from_rotation(to_v3(axis.normalize_or(DVec3::Z)), angle_rad))
@@ -20,7 +20,7 @@ where
 
 pub fn apply_standard_scale<T>(entity: &mut T, center: DVec3, factor: f64)
 where
-    T: acadrust::Entity,
+    T: codec::Entity,
 {
     let s = factor;
     let t = Transform::from_scaling_with_origin(Vector3::new(s, s, s), to_v3(center));
@@ -29,7 +29,7 @@ where
 
 pub fn apply_standard_entity_transform<T, F>(entity: &mut T, t: &EntityTransform, mirror: F)
 where
-    T: acadrust::Entity,
+    T: codec::Entity,
     F: FnOnce(&mut T, DVec3, DVec3),
 {
     match t {
@@ -57,11 +57,11 @@ where
     }
 }
 
-/// Reflection across the world-XY line through `p1`→`p2` as an acadrust
-/// `Transform`, for delegating MIRROR to acadrust's entity-aware
+/// Reflection across the world-XY line through `p1`→`p2` as an opencadcodec
+/// `Transform`, for delegating MIRROR to opencadcodec's entity-aware
 /// `apply_transform` paths (which handle direction flags, stored-angle
 /// conventions and bulges themselves). Degenerate line → identity.
-pub fn reflection_about_xy_line(p1: DVec3, p2: DVec3) -> acadrust::types::Transform {
+pub fn reflection_about_xy_line(p1: DVec3, p2: DVec3) -> codec::types::Transform {
     reflection_about_working_line(p1, p2, DVec3::Z)
 }
 
@@ -71,8 +71,8 @@ pub fn reflection_about_working_line(
     p1: DVec3,
     p2: DVec3,
     working_normal: DVec3,
-) -> acadrust::types::Transform {
-    use acadrust::types::{Matrix4, Transform};
+) -> codec::types::Transform {
+    use codec::types::{Matrix4, Transform};
     let line = p2 - p1;
     let plane_normal = line
         .cross(working_normal.normalize_or(DVec3::Z))
@@ -191,11 +191,11 @@ mod mirror_delegation_tests {
     use super::*;
     use crate::command::EntityTransform;
     use crate::entities::traits::Transformable;
-    use acadrust::entities::hatch::{BoundaryEdge, BoundaryPath, CircularArcEdge, LineEdge};
-    use acadrust::entities::Hatch;
-    use acadrust::types::Vector2;
+    use codec::entities::hatch::{BoundaryEdge, BoundaryPath, CircularArcEdge, LineEdge};
+    use codec::entities::Hatch;
+    use codec::types::Vector2;
 
-    // MIRROR on a hatch goes through reflection_about_xy_line + acadrust's
+    // MIRROR on a hatch goes through reflection_about_xy_line + opencadcodec's
     // transform_hatch. Mirror a Line→Arc→Line path across a vertical line and
     // assert the arc stays endpoint-continuous, flips its direction flag, and
     // keeps its sweep magnitude (the stored-angle conventions the old