Require forwarded reviewer LLM credentials

agent_reviewer/builder.py

@@ -117,10 +117,25 @@ def build_reviewer_graph(
         )
     )
 
+    missing_llm_fields = [
+        name
+        for name, value in (
+            ("llm_model", ctx.llm_model),
+            ("llm_base_url", ctx.llm_base_url),
+            ("llm_api_key", ctx.llm_api_key),
+        )
+        if not value
+    ]
+    if missing_llm_fields:
+        raise ValueError(
+            "reviewer requires forwarded ctx.llm credentials; missing "
+            + ", ".join(missing_llm_fields)
+        )
+
     model_kwargs: dict[str, Any] = {
-        "model": ctx.llm_model or settings.litellm_model,
-        "base_url": ctx.llm_base_url or (settings.litellm_url + "/v1"),
-        "api_key": ctx.llm_api_key or settings.litellm_key,
+        "model": ctx.llm_model,
+        "base_url": ctx.llm_base_url,
+        "api_key": ctx.llm_api_key,
         "stream_usage": True,
     }
     if ctx.llm_temperature_mode != "omit":