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/wblock.rs

@@ -4,7 +4,7 @@
 //   block name  → copies the named block definition to a new document
 //   *           → copies currently selected model-space entities
 
-use acadrust::{CadDocument, EntityType};
+use codec::{CadDocument, EntityType};
 use crate::t;
 
 use crate::modules::{IconKind, ModuleEvent, ToolDef};
@@ -68,8 +68,8 @@ pub fn extract_block_into(
                 continue;
             }
             let mut clone = entity.clone();
-            clone.common_mut().handle = acadrust::types::Handle::NULL;
-            clone.common_mut().owner_handle = acadrust::types::Handle::NULL;
+            clone.common_mut().handle = codec::types::Handle::NULL;
+            clone.common_mut().owner_handle = codec::types::Handle::NULL;
             let _ = out.add_entity(clone);
         }
     }
@@ -89,7 +89,7 @@ pub fn extract_block_into(
 /// (the "selected entities" mode, `*`).
 pub fn extract_entities_to_doc(
     src: &CadDocument,
-    handles: &[acadrust::Handle],
+    handles: &[codec::Handle],
 ) -> Result<CadDocument, String> {
     let mut out = CadDocument::new();
     extract_entities_into(src, handles, &mut out)?;
@@ -99,7 +99,7 @@ pub fn extract_entities_to_doc(
 /// Extract the listed entities into `out` (fresh document or template base).
 pub fn extract_entities_into(
     src: &CadDocument,
-    handles: &[acadrust::Handle],
+    handles: &[codec::Handle],
     out: &mut CadDocument,
 ) -> Result<(), String> {
     if handles.is_empty() {
@@ -119,8 +119,8 @@ pub fn extract_entities_into(
                 }
             }
             let mut clone = entity.clone();
-            clone.common_mut().handle = acadrust::types::Handle::NULL;
-            clone.common_mut().owner_handle = acadrust::types::Handle::NULL;
+            clone.common_mut().handle = codec::types::Handle::NULL;
+            clone.common_mut().owner_handle = codec::types::Handle::NULL;
             let _ = out.add_entity(clone);
         }
     }
@@ -150,8 +150,8 @@ pub fn normalize_to_origin(out: &mut CadDocument) {
     if min.iter().any(|v| !v.is_finite()) {
         return;
     }
-    let shift = crate::command::EntityTransform::Affine(acadrust::types::Transform::from_translation(
-        acadrust::types::Vector3::new(-min[0], -min[1], -min[2]),
+    let shift = crate::command::EntityTransform::Affine(codec::types::Transform::from_translation(
+        codec::types::Vector3::new(-min[0], -min[1], -min[2]),
     ));
     for entity in out.entities_mut() {
         crate::scene::view::dispatch::apply_transform(entity, &shift);
@@ -187,7 +187,7 @@ impl crate::command::CadCommand for WblockPickBasePointCommand {
 /// applying `base_point` translation and `unit` insertion units.
 pub fn extract_entities_to_doc_with_base(
     src: &CadDocument,
-    handles: &[acadrust::Handle],
+    handles: &[codec::Handle],
     base_point: glam::DVec3,
     unit: i16,
 ) -> Result<CadDocument, String> {
@@ -196,7 +196,7 @@ pub fn extract_entities_to_doc_with_base(
     extract_entities_into(src, handles, &mut out)?;
     if base_point != glam::DVec3::ZERO {
         let shift = crate::command::EntityTransform::Affine(
-            acadrust::types::Transform::from_translation(acadrust::types::Vector3::new(
+            codec::types::Transform::from_translation(codec::types::Vector3::new(
                 -base_point.x,
                 -base_point.y,
                 -base_point.z,
@@ -212,8 +212,8 @@ pub fn extract_entities_to_doc_with_base(
 #[cfg(test)]
 mod tests {
     use super::*;
-    use acadrust::entities::Line;
-    use acadrust::types::Vector3;
+    use codec::entities::Line;
+    use codec::types::Vector3;
 
     #[test]
     fn test_extract_entities_with_base_point_and_units() {
@@ -252,7 +252,7 @@ mod tests {
         line.end = Vector3::new(3.0, 4.0, 0.0);
         let h = doc.add_entity(EntityType::Line(line)).unwrap();
 
-        let mut block_record = acadrust::tables::BlockRecord::new("MY_BLOCK".to_string());
+        let mut block_record = codec::tables::BlockRecord::new("MY_BLOCK".to_string());
         block_record.entity_handles.push(h);
         let _ = doc.block_records.add(block_record);