Rename internal model references to CodonTranslatorModel

src/models.py

@@ -1,6 +1,6 @@
 """
 Core model architectures for CodonTranslator.
-- Decoder-only backbone with species + protein prefixing
+- CodonTranslatorModel: decoder-only backbone with species + protein prefixing
 Includes a frozen ESM-C encoder for protein conditioning.
 """
 
@@ -97,7 +97,7 @@ class FrozenESMCEncoder(nn.Module):
 
 
 
-class CodonGPT(nn.Module):
+class CodonTranslatorModel(nn.Module):
     def __init__(
         self,
         vocab_size: int = 79,