Support evaluation-local configuration and names overrides

tests/test_statement_personal_flow.py

@@ -325,7 +325,7 @@ class SelectiveGeminiTests(unittest.TestCase):
         for label in self.labels:
             (self.root / 'Persp' / label).write_text(label + '\nReviewed rubric')
         before = self.snapshot()
-        with patch.object(gemini, 'api_key', ''), patch.object(gemini.genai, 'Client') as client:
+        with patch.object(gemini.config, 'API_KEY', ''), patch.object(gemini.genai, 'Client') as client:
             self.assertEqual(gemini.refine_existing(self.workspace, 'persp'), ExitCode.SUCCESS)
             client.assert_not_called()
         self.assertEqual(self.snapshot(), before)