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

hermes_cli/doctor.py

@@ -740,6 +740,7 @@ def run_doctor(args):
 
             # Warn if model is set to a provider-prefixed name on a provider that doesn't use them
             provider_for_policy = runtime_provider or catalog_provider
+            provider_policy_id = str(provider_for_policy or "").strip().lower()
             providers_accepting_vendor_slugs = {
                 "openrouter",
                 "custom",
@@ -753,8 +754,9 @@ def run_doctor(args):
             if (
                 default_model
                 and "/" in default_model
-                and provider_for_policy
-                and provider_for_policy not in providers_accepting_vendor_slugs
+                and provider_policy_id
+                and provider_policy_id not in providers_accepting_vendor_slugs
+                and not provider_policy_id.startswith("custom:")
             ):
                 check_warn(
                     f"model.default '{default_model}' uses a vendor/model slug but provider is '{provider_raw}'",

hermes_cli/providers.py

@@ -492,7 +492,10 @@ def get_label(provider_id: str) -> str:
 
 def is_aggregator(provider: str) -> bool:
     """Return True when the provider is a multi-model aggregator."""
-    pdef = get_provider(provider)
+    provider_norm = normalize_provider(provider or "")
+    if provider_norm.startswith("custom:"):
+        return True
+    pdef = get_provider(provider_norm)
     return pdef.is_aggregator if pdef else False