CHORE: change default base URL of ArgoConfig to OpenAI-compatible endpoint and deprecate user

Author: mdw771

docs/llm-config.rst

@@ -37,7 +37,7 @@ Available config classes
    - ``model``
    - ``base_url``
    - ``api_key``
-   - ``user``
+   - ``user`` (deprecated; accepted temporarily and ignored)
 
 How the config is used
 ----------------------

packages/eaa-core/src/eaa_core/api/llm_config.py

@@ -1,4 +1,5 @@
 from dataclasses import dataclass
+import warnings
 
 from eaa_core.api.base import BaseConfig
 
@@ -30,10 +31,19 @@ class AskSageConfig(LLMConfig):
 
 
 @dataclass
-class ArgoConfig(LLMConfig):
+class ArgoConfig(OpenAIConfig):
     """Configuration for Argo endpoints."""
 
-    model: str = None
-    base_url: str = "https://apps-dev.inside.anl.gov/argoapi/api/v1/resource/"
+    base_url: str = "https://apps-dev.inside.anl.gov/argoapi/v1"
     api_key: str = "ARGO_USER"
-    user: str = None
+    user: str | None = None
+
+    def __post_init__(self) -> None:
+        """Warn when the deprecated compatibility field is still used."""
+        if self.user is not None:
+            warnings.warn(
+                "`ArgoConfig.user` is deprecated and ignored. "
+                "Configure authentication through `api_key` instead.",
+                DeprecationWarning,
+                stacklevel=2,
+            )

packages/eaa-core/src/eaa_core/llm/model.py

@@ -4,13 +4,13 @@
 from langchain_core.messages.utils import convert_to_messages
 from langchain_openai import ChatOpenAI
 
-from eaa_core.api.llm_config import ArgoConfig, AskSageConfig, LLMConfig, OpenAIConfig
+from eaa_core.api.llm_config import AskSageConfig, LLMConfig, OpenAIConfig
 from eaa_core.message_proc import ai_message_to_openai_dict
 
 
 def build_chat_model(llm_config: LLMConfig) -> ChatOpenAI:
     """Build a LangChain chat model from an EAA LLM config."""
-    if isinstance(llm_config, (OpenAIConfig, ArgoConfig)):
+    if isinstance(llm_config, OpenAIConfig):
         return ChatOpenAI(
             model=llm_config.model,
             base_url=llm_config.base_url,