refactor(evals): isolate workflow evals and target specific models

evals/workflows/constants.ts

@@ -0,0 +1,10 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+// The models that workflow evals should target.
+// These workflows (triage, dedup) run in GitHub Actions using the default CLI model.
+// We restrict evals to this model to avoid noise from other models in the nightly matrix.
+export const WORKFLOW_TARGET_MODELS = ['gemini-2.5-pro'];