Restore missing implementation of the architecture variable.

src/submission/submit.py

@@ -48,7 +48,14 @@ def add_new_eval(
         revision = "main"
 
     # Is the model on the hub?
-    model_on_hub, error, _ = is_model_on_hub(model_name=model, revision=revision, token=TOKEN, test_tokenizer=True)
+    model_on_hub, error, model_config = is_model_on_hub(
+        model_name=model, revision=revision, token=TOKEN, test_tokenizer=True
+    )
+    architecture = "?"
+    if model_config is not None:
+        architectures = getattr(model_config, "architectures", None)
+        if architectures:
+            architecture = ";".join(architectures)
     if not model_on_hub:
         return styled_error(f'Model "{model}" {error}')
 
@@ -86,6 +93,7 @@ def add_new_eval(
         "private": False,
         "add_special_tokens": add_special_tokens,
         "llm_jp_eval_version": current_version,
+        "architecture": architecture,
         "vllm_version": current_vllm_version,
     }