fix(cli): validate user-defined providers consistently

hermes_cli/doctor.py

@@ -296,16 +296,33 @@ def run_doctor(args):
             except Exception:
                 pass
             try:
-                from hermes_cli.auth import resolve_provider as _resolve_provider
+                from hermes_cli.config import get_compatible_custom_providers as _compatible_custom_providers
+                from hermes_cli.providers import resolve_provider_full as _resolve_provider_full
             except Exception:
-                _resolve_provider = None
+                _compatible_custom_providers = None
+                _resolve_provider_full = None
+
+            custom_providers = []
+            if _compatible_custom_providers is not None:
+                try:
+                    custom_providers = _compatible_custom_providers(cfg)
+                except Exception:
+                    custom_providers = []
+
+            user_providers = cfg.get("providers")
+            if isinstance(user_providers, dict):
+                known_providers.update(str(name).strip().lower() for name in user_providers if str(name).strip())
+            for entry in custom_providers:
+                if not isinstance(entry, dict):
+                    continue
+                name = str(entry.get("name") or "").strip()
+                if name:
+                    known_providers.add("custom:" + name.lower().replace(" ", "-"))
 
             canonical_provider = provider
-            if provider and _resolve_provider is not None and provider != "auto":
-                try:
-                    canonical_provider = _resolve_provider(provider)
-                except Exception:
-                    canonical_provider = None
+            if provider and _resolve_provider_full is not None and provider != "auto":
+                provider_def = _resolve_provider_full(provider, user_providers, custom_providers)
+                canonical_provider = provider_def.id if provider_def is not None else None
 
             if provider and provider != "auto":
                 if canonical_provider is None or (known_providers and canonical_provider not in known_providers):

hermes_cli/main.py

@@ -1429,6 +1429,7 @@ def select_provider_and_model(args=None):
         load_config,
         get_env_value,
     )
+    from hermes_cli.providers import resolve_provider_full
 
     config = load_config()
     current_model = config.get("model")
@@ -1446,14 +1447,30 @@ def select_provider_and_model(args=None):
     effective_provider = (
         config_provider or os.getenv("HERMES_INFERENCE_PROVIDER") or "auto"
     )
-    try:
-        active = resolve_provider(effective_provider)
-    except AuthError as exc:
-        warning = format_auth_error(exc)
-        print(f"Warning: {warning} Falling back to auto provider detection.")
+    compatible_custom_providers = get_compatible_custom_providers(config)
+    active = None
+    if effective_provider != "auto":
+        active_def = resolve_provider_full(
+            effective_provider,
+            config.get("providers"),
+            compatible_custom_providers,
+        )
+        if active_def is not None:
+            active = active_def.id
+        else:
+            warning = (
+                f"Unknown provider '{effective_provider}'. Check 'hermes model' for "
+                "available providers, or run 'hermes doctor' to diagnose config "
+                "issues."
+            )
+            print(f"Warning: {warning} Falling back to auto provider detection.")
+    if active is None:
         try:
             active = resolve_provider("auto")
-        except AuthError:
+        except AuthError as exc:
+            if effective_provider == "auto":
+                warning = format_auth_error(exc)
+                print(f"Warning: {warning} Falling back to auto provider detection.")
             active = None  # no provider yet; default to first in list
 
     # Detect custom endpoint