fix(doctor): allow vendor slugs for named custom providers

tests/hermes_cli/test_doctor.py

@@ -540,6 +540,54 @@ def test_run_doctor_accepts_hermes_provider_ids_that_catalog_aliases(
         )
 
 
+def test_run_doctor_accepts_vendor_slugs_for_named_custom_provider(monkeypatch, tmp_path):
+    home = tmp_path / ".hermes"
+    home.mkdir(parents=True, exist_ok=True)
+    (home / "config.yaml").write_text(
+        "model:\n"
+        "  provider: custom:hpc-ai\n"
+        "  default: deepseek/deepseek-v4-flash\n"
+        "custom_providers:\n"
+        "  - name: hpc-ai\n"
+        "    base_url: https://hpc-ai.example/v1\n"
+        "    api_key: test-key\n",
+        encoding="utf-8",
+    )
+
+    monkeypatch.setattr(doctor_mod, "HERMES_HOME", home)
+    monkeypatch.setattr(doctor_mod, "PROJECT_ROOT", tmp_path / "project")
+    monkeypatch.setattr(doctor_mod, "_DHH", str(home))
+    (tmp_path / "project").mkdir(exist_ok=True)
+
+    fake_model_tools = types.SimpleNamespace(
+        check_tool_availability=lambda *a, **kw: ([], []),
+        TOOLSET_REQUIREMENTS={},
+    )
+    monkeypatch.setitem(sys.modules, "model_tools", fake_model_tools)
+
+    try:
+        from hermes_cli import auth as _auth_mod
+        monkeypatch.setattr(_auth_mod, "get_nous_auth_status", lambda: {})
+        monkeypatch.setattr(_auth_mod, "get_codex_auth_status", lambda: {})
+        monkeypatch.setattr(_auth_mod, "get_xai_oauth_auth_status", lambda: {})
+    except Exception:
+        pass
+
+    buf = io.StringIO()
+    with contextlib.redirect_stdout(buf):
+        doctor_mod.run_doctor(Namespace(fix=False))
+
+    out = buf.getvalue()
+    assert "model.provider 'custom:hpc-ai' is not a recognised provider" not in out
+    assert "model.provider 'custom:hpc-ai' is unknown" not in out
+    assert (
+        "model.default 'deepseek/deepseek-v4-flash' uses a vendor/model slug but provider is "
+        "'custom:hpc-ai'"
+        not in out
+    )
+    assert "Either set model.provider to 'openrouter', or drop the vendor prefix." not in out
+
+
 
 
 def test_run_doctor_accepts_kimi_coding_cn_provider(monkeypatch, tmp_path):

tests/hermes_cli/test_model_switch_custom_providers.py

@@ -65,6 +65,15 @@ def test_resolve_provider_full_finds_named_custom_provider():
     assert resolved.source == "user-config"
 
 
+def test_is_aggregator_recognizes_named_custom_provider():
+    assert providers_mod.is_aggregator("custom:hpc-ai") is True
+    assert providers_mod.is_aggregator("custom:litellm") is True
+
+
+def test_is_aggregator_leaves_unknown_provider_non_aggregator():
+    assert providers_mod.is_aggregator("not-a-provider") is False
+
+
 def test_switch_model_accepts_explicit_named_custom_provider(monkeypatch):
     """Shared /model switch pipeline should accept --provider for custom_providers."""
     monkeypatch.setattr(