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/plugin/external.rs

@@ -31,7 +31,7 @@ pub struct RegistryEntry {
 pub struct ReleaseInfo {
     pub tag: String,
     pub api_version: u32,
-    /// Full `acadrust` git source used by the release.
+    /// Full `opencadcodec` git source used by the release.
     pub acadrust_source: Option<String>,
     /// Whether `[opencad]` declares `acadrust_source`.
     pub acadrust_declared: bool,
@@ -57,7 +57,7 @@ pub struct ExternalPlugin {
     /// an older `plugin.toml` does not declare `repository`.
     pub repository: Option<String>,
     pub api_version: u32,
-    /// Full `acadrust` git source used by the plugin.
+    /// Full `opencadcodec` git source used by the plugin.
     pub acadrust_source: Option<String>,
     /// Whether `[opencad]` declares `acadrust_source`.
     pub acadrust_declared: bool,
@@ -434,7 +434,7 @@ mod loader {
                 && d.acadrust_source.is_none()
             {
                 eprintln!(
-                    "[plugin] {} declares acadrust metadata but has no fingerprint; cannot verify compatibility",
+                    "[plugin] {} declares opencadcodec metadata but has no fingerprint; cannot verify compatibility",
                     d.id
                 );
             }
@@ -450,7 +450,7 @@ mod loader {
                 out.push((
                     d.id.clone(),
                     Err(format!(
-                        "Plugin built for acadrust @{plugin_hash}, but this host uses @{host_hash}"
+                        "Plugin built for opencadcodec @{plugin_hash}, but this host uses @{host_hash}"
                     )),
                 ));
                 continue;
@@ -777,9 +777,9 @@ acadrust_source = "0123456789012345678901234567890123456789"
     fn acadrust_mismatch_detected() {
         let host = ocs_plugin_api::version_info::host_acadrust_source();
         let other = if host.contains("94df2c3") {
-            "git+https://github.com/HakanSeven12/cadcodec.git?rev=0908da7#0908da7b6e4f702a6c78359a57f53e2b79cf39eb"
+            "git+https://github.com/HakanSeven12/opencadcodec.git?rev=0908da7#0908da7b6e4f702a6c78359a57f53e2b79cf39eb"
         } else {
-            "git+https://github.com/HakanSeven12/cadcodec.git?rev=94df2c3#94df2c3f87fa051b16ffc3923f80e9247c85c5fd"
+            "git+https://github.com/HakanSeven12/opencadcodec.git?rev=94df2c3#94df2c3f87fa051b16ffc3923f80e9247c85c5fd"
         };
         let toml = format!(
             r#"
@@ -795,7 +795,7 @@ acadrust_source = "{other}"
         );
         let p = parse_plugin_toml(&toml).expect("parsed");
         assert!(p.acadrust_declared);
-        assert!(!p.acadrust_compatible(), "mismatched acadrust fingerprint should be incompatible");
+        assert!(!p.acadrust_compatible(), "mismatched opencadcodec fingerprint should be incompatible");
         assert!(!p.loadable());
     }
 
@@ -816,7 +816,7 @@ acadrust_source = "{host}"
         );
         let p = parse_plugin_toml(&toml).expect("parsed");
         assert!(p.acadrust_declared);
-        assert!(p.acadrust_compatible(), "matching acadrust fingerprint should be compatible");
+        assert!(p.acadrust_compatible(), "matching opencadcodec fingerprint should be compatible");
     }
 
     #[test]
@@ -829,14 +829,14 @@ version = "0.1.0"
 api_version = 2
 
 [opencad]
-acadrust_source = "git+https://github.com/HakanSeven12/cadcodec.git?rev=0908da7#0908da7b6e4f702a6c78359a57f53e2b79cf39eb"
+acadrust_source = "git+https://github.com/HakanSeven12/opencadcodec.git?rev=0908da7#0908da7b6e4f702a6c78359a57f53e2b79cf39eb"
 "#;
         let mut p = parse_plugin_toml(toml).expect("parsed");
         p.lib_present = true;
         assert!(p.acadrust_declared);
         assert!(
             p.acadrust_compatible(),
-            "API v2 plugin should bypass acadrust gate"
+            "API v2 plugin should bypass opencadcodec gate"
         );
         assert!(p.loadable());
     }