fix: remove PII email from auth success log

Remove raw email address from console.warn output to prevent PII
from being written to persistent Electron log files, addressing
GDPR/CCPA risk.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/frontend/src/renderer/components/onboarding/OAuthStep.tsx

@@ -79,7 +79,7 @@ export function OAuthStep({ onNext, onBack, onSkip }: OAuthStepProps) {
   );
 
   // Reusable function to load Claude profiles
-  const loadClaudeProfiles = async () => {
+  const loadClaudeProfiles = useCallback(async () => {
     setIsLoadingProfiles(true);
     setError(null);
     try {
@@ -95,7 +95,7 @@ export function OAuthStep({ onNext, onBack, onSkip }: OAuthStepProps) {
     } finally {
       setIsLoadingProfiles(false);
     }
-  };
+  }, []);
 
   // Load Claude profiles on mount
   useEffect(() => {
@@ -231,7 +231,7 @@ export function OAuthStep({ onNext, onBack, onSkip }: OAuthStepProps) {
 
   // Handle auth terminal success
   const handleAuthTerminalSuccess = useCallback(async (email?: string) => {
-    console.warn('[OAuthStep] Auth success:', email);
+    console.warn('[OAuthStep] Auth success');
 
     // Close terminal immediately
     setAuthTerminal(null);