Cargo: codec 278c49a, kernel 46e5bf8, graph 3b3a03d

The codec now decodes version-0 (2010 release) constraint groups, so the
parametric constraints of such drawings load and their dynamic
dimensions show (#992). Constraint groups also keep their next node id.

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

plugins/opencad-python/Cargo.lock

@@ -1264,7 +1264,7 @@ dependencies = [
 [[package]]
 name = "opencadcodec"
 version = "0.6.0"
-source = "git+https://github.com/HakanSeven12/opencadcodec.git?rev=f385f75#f385f75decc311b7caeefb22d4e7435d97e12edb"
+source = "git+https://github.com/HakanSeven12/opencadcodec.git?rev=278c49a#278c49a95b76cd821e292ef85f13282a79ea149d"
 dependencies = [
  "anyhow",
  "bitflags",