fix(model_picker): detect mapped-provider auth-store credentials

tests/hermes_cli/test_overlay_slug_resolution.py

@@ -81,3 +81,22 @@ def test_kilo_overlay_uses_hermes_slug():
 
     kilo_mdev = next((p for p in providers if p["slug"] == "kilo"), None)
     assert kilo_mdev is None, "kilo slug should not appear (resolved to kilocode)"
+
+
+
+def test_mapped_provider_credential_pool_visibility(monkeypatch):
+    """Mapped providers should appear when credentials live only in auth-store credential_pool."""
+    monkeypatch.setattr("agent.models_dev.fetch_models_dev", lambda: {"google-ai-studio": {"env": ["GEMINI_API_KEY"]}})
+    monkeypatch.setattr("agent.models_dev.PROVIDER_TO_MODELS_DEV", {"gemini": "google-ai-studio"})
+    monkeypatch.setattr(
+        "hermes_cli.auth._load_auth_store",
+        lambda: {"providers": {}, "credential_pool": {"gemini": {"token": "fake"}}},
+    )
+    monkeypatch.delenv("GEMINI_API_KEY", raising=False)
+
+    providers = list_authenticated_providers(current_provider="gemini")
+
+    gemini = next((p for p in providers if p["slug"] == "gemini"), None)
+    assert gemini is not None, "gemini should appear when auth-store credential_pool has creds"
+    assert gemini["is_current"] is True
+    assert gemini["total_models"] > 0