fix: refresh delegation doctor proof surface on current base

tests/tools/test_delegate_credentials.py

@@ -0,0 +1,54 @@
+import sys
+from pathlib import Path
+from unittest.mock import patch
+
+sys.path.insert(0, str(Path(__file__).parent.parent.parent))
+
+from tools.delegate_tool import _resolve_delegation_credentials
+
+
+def test_base_url_delegation_uses_provider_credentials_when_api_key_missing():
+    cfg = {
+        "model": "MiniMax-M2.7",
+        "provider": "minimax",
+        "base_url": "https://api.minimax.io/v1",
+        "api_key": "",
+    }
+    runtime = {
+        "provider": "minimax",
+        "base_url": "https://api.minimax.io/v1",
+        "api_key": "minimax-test-key",
+        "api_mode": "chat_completions",
+    }
+
+    with patch.dict("os.environ", {}, clear=False), patch(
+        "hermes_cli.runtime_provider.resolve_runtime_provider", return_value=runtime
+    ):
+        resolved = _resolve_delegation_credentials(cfg, parent_agent=None)
+
+    assert resolved["provider"] == "minimax"
+    assert resolved["base_url"] == "https://api.minimax.io/v1"
+    assert resolved["api_key"] == "minimax-test-key"
+    assert resolved["api_mode"] == "chat_completions"
+
+
+def test_base_url_delegation_error_mentions_provider_fallback_path():
+    cfg = {
+        "model": "MiniMax-M2.7",
+        "provider": "minimax",
+        "base_url": "https://api.minimax.io/v1",
+        "api_key": "",
+    }
+
+    with patch.dict("os.environ", {}, clear=False), patch(
+        "hermes_cli.runtime_provider.resolve_runtime_provider", side_effect=RuntimeError("missing creds")
+    ):
+        try:
+            _resolve_delegation_credentials(cfg, parent_agent=None)
+        except ValueError as exc:
+            msg = str(exc)
+        else:
+            raise AssertionError("Expected ValueError when no delegation API key is available")
+
+    assert "delegation.provider" in msg
+    assert "OPENAI_API_KEY" in msg