Cargo: codec eaa6d79, kernel bb355ca, graph 9c17779

- Gradient stops keep their DWG color book name and book; RGB wins over
  ACI in a DXF gradient block in either tag order.
- MTEXT decimal tab stops keep their alignment character.

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=2c2a3fb#2c2a3fb06f0401ccf867154891e9877528cc60f2"
+source = "git+https://github.com/HakanSeven12/opencadcodec.git?rev=eaa6d79#eaa6d79155b7364196bb3bfde37a03f2d9cc375f"
 dependencies = [
  "anyhow",
  "bitflags",