test: update fetch_api_models call-shape assertions for explicit timeout

Three tests pin the exact kwargs of the picker probe call
(test_model_switch_custom_providers + two in
test_user_providers_model_switch, the latter caught by CI slice 2);
the picker-timeout change now always passes timeout explicitly (5.0 on
the non-picker path), so the pinned shapes gain the key.

tests/hermes_cli/test_model_switch_custom_providers.py

@@ -640,7 +640,7 @@ def test_custom_providers_uses_live_models_for_multi_model_endpoint(monkeypatch)
 
     assert gateway_prov is not None, "Custom provider group not found in results"
     assert calls == [
-        ("sk-gateway-key", "https://gateway.example.com/v1", {"headers": None})
+        ("sk-gateway-key", "https://gateway.example.com/v1", {"timeout": 5.0, "headers": None})
     ], "fetch_api_models must be called with the custom provider's credentials"
     assert gateway_prov["models"] == [
         "gateway-model-a",

tests/hermes_cli/test_user_providers_model_switch.py

@@ -158,7 +158,7 @@ def test_list_authenticated_providers_uses_live_models_for_user_provider(monkeyp
     )
 
     assert user_prov is not None
-    assert calls == [("sk-test", "http://127.0.0.1:3000/api/v1", {"headers": None})]
+    assert calls == [("sk-test", "http://127.0.0.1:3000/api/v1", {"timeout": 5.0, "headers": None})]
     assert user_prov["models"] == ["old-configured-model", "new-live-model"]
     assert user_prov["total_models"] == 2
 
@@ -497,7 +497,7 @@ def test_section3_probes_no_key_endpoint_without_explicit_models(monkeypatch):
 
     assert probed.get("called") is True, "no-key bare endpoint should be probed"
     assert probed["api_key"] == ""
-    assert probed["kwargs"] == {"headers": None}
+    assert probed["kwargs"] == {"timeout": 5.0, "headers": None}
     row = next(p for p in providers if p["slug"] == "local-llamacpp")
     assert row["models"] == ["live-model-1", "live-model-2", "live-model-3"]
     assert row["total_models"] == 3