fix: restore zero-arg fetch_models_dev call on default paths

The branched call shape in get_provider_info/get_provider is deliberate:
~69 test sites across tests/hermes_cli and tests/gateway monkeypatch
fetch_models_dev (and get_provider_info) with zero/single-arg lambdas.
Passing allow_network= unconditionally broke 5 tests in CI slices 2/3/7.
Documented the constraint inline.

agent/models_dev.py

@@ -837,7 +837,14 @@ def get_provider_info(
     # Resolve Hermes ID → models.dev ID
     mdev_id = PROVIDER_TO_MODELS_DEV.get(provider_id, provider_id)
 
-    data = fetch_models_dev(allow_network=allow_network)
+    # NOTE: keep the zero-argument call on the default path. Dozens of test
+    # sites monkeypatch fetch_models_dev with zero-arg lambdas; passing the
+    # kwarg unconditionally would break them all (they raise TypeError).
+    data = (
+        fetch_models_dev()
+        if allow_network
+        else fetch_models_dev(allow_network=False)
+    )
     raw = data.get(mdev_id)
     if not isinstance(raw, dict):
         return None

hermes_cli/providers.py

@@ -450,7 +450,13 @@ def get_provider(name: str, *, allow_network: bool = True) -> Optional[ProviderD
     # Try to get models.dev data
     try:
         from agent.models_dev import get_provider_info as _mdev_provider
-        mdev_info = _mdev_provider(canonical, allow_network=allow_network)
+        # Keep the single-argument call on the default path: test sites
+        # monkeypatch get_provider_info with single-arg lambdas.
+        mdev_info = (
+            _mdev_provider(canonical)
+            if allow_network
+            else _mdev_provider(canonical, allow_network=False)
+        )
     except Exception:
         mdev_info = None
 

tests/agent/test_models_dev.py

@@ -469,11 +469,13 @@ class TestFetchModelsDev:
         mock_fetch.assert_called_once_with(allow_network=False)
 
     @patch("agent.models_dev.fetch_models_dev", return_value=SAMPLE_REGISTRY)
-    def test_provider_info_default_allows_network(self, mock_fetch):
+    def test_provider_info_default_preserves_zero_argument_fetch(self, mock_fetch):
+        """Default path must stay a zero-arg call: many test sites monkeypatch
+        fetch_models_dev with zero-arg lambdas."""
         info = get_provider_info("anthropic")
 
         assert info is not None
-        mock_fetch.assert_called_once_with(allow_network=True)
+        mock_fetch.assert_called_once_with()
 
     def test_provider_definition_propagates_network_disabled(self):
         from hermes_cli.providers import get_provider