fix(model): include Premium+ in xAI OAuth label

X Premium+ also grants Grok OAuth access — the 'SuperGrok Subscription'
wording suggested SuperGrok was the only entitlement path. Updated to
'SuperGrok / Premium+' across the picker label, setup wizard, auth flows,
and docs so Premium+ subscribers know the row applies to them too.

agent/auxiliary_client.py

@@ -3260,7 +3260,7 @@ def resolve_provider_client(
         if client is None:
             logger.warning(
                 "resolve_provider_client: xai-oauth requested but no xAI "
-                "OAuth token found (run: hermes model -> xAI Grok OAuth — SuperGrok Subscription)"
+                "OAuth token found (run: hermes model -> xAI Grok OAuth — SuperGrok / Premium+)"
             )
             return None, None
         final_model = _normalize_resolved_model(model or default, provider)

agent/conversation_loop.py

@@ -2867,7 +2867,7 @@ def run_conversation(
                                 agent._vprint(f"{agent.log_prefix}      2. Then run `hermes auth` to re-authenticate.", force=True)
                             else:
                                 agent._vprint(f"{agent.log_prefix}   💡 xAI OAuth token was rejected (HTTP 401). To fix:", force=True)
-                                agent._vprint(f"{agent.log_prefix}      re-authenticate with xAI Grok OAuth (SuperGrok Subscription) from `hermes model`.", force=True)
+                                agent._vprint(f"{agent.log_prefix}      re-authenticate with xAI Grok OAuth (SuperGrok / Premium+) from `hermes model`.", force=True)
                         else:
                             agent._vprint(f"{agent.log_prefix}   💡 Your API key was rejected by the provider. Check:", force=True)
                             agent._vprint(f"{agent.log_prefix}      • Is the key valid? Run: hermes setup", force=True)

agent/credential_sources.py

@@ -285,7 +285,7 @@ def _remove_xai_oauth_loopback_pkce(provider: str, removed) -> RemovalResult:
     if _clear_auth_store_provider(provider):
         result.cleaned.append(f"Cleared {provider} OAuth tokens from auth store")
     result.hints.append(
-        "Run `hermes model` → xAI Grok OAuth (SuperGrok Subscription) to re-authenticate if needed."
+        "Run `hermes model` → xAI Grok OAuth (SuperGrok / Premium+) to re-authenticate if needed."
     )
     return result