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/entities/text.rs

@@ -1,4 +1,4 @@
-use acadrust::entities::{Text, TextHorizontalAlignment as HA, TextVerticalAlignment as VA};
+use codec::entities::{Text, TextHorizontalAlignment as HA, TextVerticalAlignment as VA};
 
 use crate::command::EntityTransform;
 use crate::entities::common::{
@@ -52,7 +52,7 @@ pub(crate) fn sync_text_alignment_point(t: &mut Text) {
                     * t.width_factor.abs().max(0.01)
                     * t.value.chars().count().max(1) as f64
                     * 0.6;
-                t.alignment_point = Some(acadrust::types::Vector3::new(
+                t.alignment_point = Some(codec::types::Vector3::new(
                     t.insertion_point.x + t.rotation.cos() * span,
                     t.insertion_point.y + t.rotation.sin() * span,
                     t.insertion_point.z,
@@ -100,13 +100,13 @@ pub struct TextPlacement {
     pub wcs_insertion: [f64; 3],
 }
 
-/// Parse a TEXT value's `%%` control codes through acadrust's `parse_plain_text`
+/// Parse a TEXT value's `%%` control codes through opencadcodec's `parse_plain_text`
 /// (the same parser MTEXT uses), then re-encode into the stroke tessellator's
 /// inline grammar: specials arrive resolved to Unicode, and `%%u`/`%%o`
 /// underline/overline become `\L…\l` / `\O…\o` decoration markers. This keeps
-/// TEXT parsing in acadrust rather than OCS's own tokenizer.
+/// TEXT parsing in opencadcodec rather than OCS's own tokenizer.
 pub(crate) fn acad_text_encode(value: &str) -> String {
-    use acadrust::entities::mtext_format::parse_plain_text;
+    use codec::entities::mtext_format::parse_plain_text;
     let doc = parse_plain_text(value);
     let mut out = String::new();
     for para in &doc.paragraphs {
@@ -132,12 +132,12 @@ pub(crate) fn acad_text_encode(value: &str) -> String {
 
 pub(crate) fn to_render_at_scale(
     t: &Text,
-    document: &acadrust::CadDocument,
+    document: &codec::CadDocument,
     annotation_scale: f32,
 ) -> RenderEntity {
     let p = text_run_placement_at_scale(t, document, annotation_scale);
     let snap_pt = glam::DVec3::new(p.wcs_insertion[0], p.wcs_insertion[1], p.wcs_insertion[2]);
-    // Parse `%%` codes via acadrust, re-encoded for the stroke tessellator.
+    // Parse `%%` codes via opencadcodec, re-encoded for the stroke tessellator.
     let value = acad_text_encode(&p.value);
     // Strokes are in glyph-local space (origin = [0,0]).
     let (strokes, fill_tris) = lff::tessellate_text_ex(
@@ -179,7 +179,7 @@ pub(crate) fn to_render_at_scale(
 /// from `to_render` verbatim so the stroke and SDF-quad paths agree exactly.
 pub fn text_run_placement_at_scale(
     t: &Text,
-    document: &acadrust::CadDocument,
+    document: &codec::CadDocument,
     annotation_scale: f32,
 ) -> TextPlacement {
     let annotation_scale = if annotation_scale.is_finite() && annotation_scale > 1.0e-9 {
@@ -647,7 +647,7 @@ fn apply_transform(t: &mut Text, tr: &EntityTransform) {
 }
 
 impl RenderConvertible for Text {
-    fn to_render(&self, document: &acadrust::CadDocument) -> Option<RenderEntity> {
+    fn to_render(&self, document: &codec::CadDocument) -> Option<RenderEntity> {
         Some(to_render_at_scale(self, document, 1.0))
     }
 }
@@ -721,10 +721,10 @@ mod tests {
         let mut t = Text::default();
         t.value = "بسم الله".to_string();
         t.height = 2.5;
-        t.insertion_point = acadrust::types::Vector3::new(10.0, 20.0, 0.0);
+        t.insertion_point = codec::types::Vector3::new(10.0, 20.0, 0.0);
         t.horizontal_alignment = HA::Left;
 
-        let doc = acadrust::CadDocument::default();
+        let doc = codec::CadDocument::default();
         let placement = text_run_placement_at_scale(&t, &doc, 1.0);
 
         // For Arabic text with default HA::Left, origin should be shifted left
@@ -749,7 +749,7 @@ impl Transformable for Text {
     }
 }
 
-impl crate::entities::traits::TextContent for acadrust::entities::Text {
+impl crate::entities::traits::TextContent for codec::entities::Text {
     fn text_content(&self) -> Option<String> {
         Some(self.value.clone())
     }