Investigate login/signup failure

Investigate and address the "Failed to fetch" error during signup and login failures.

src/components/supabase/SupabaseSettingsForm.tsx

@@ -23,8 +23,8 @@ const SupabaseSettingsForm: React.FC<SupabaseSettingsFormProps> = ({ onSaved })
   const [formState, setFormState] = useState({
     supabaseUrl: '',
     supabaseKey: '',
-    useProxy: false,
-    proxyType: 'corsproxy.io',
+    useProxy: true, // 기본값을 true로 변경
+    proxyType: 'cloudflare', // 기본값을 cloudflare로 변경
     isSaving: false
   });
 
@@ -37,15 +37,15 @@ const SupabaseSettingsForm: React.FC<SupabaseSettingsFormProps> = ({ onSaved })
   useEffect(() => {
     const savedUrl = localStorage.getItem('supabase_url');
     const savedKey = localStorage.getItem('supabase_key');
-    const proxyEnabled = isCorsProxyEnabled();
+    const proxyEnabled = localStorage.getItem('use_cors_proxy') === 'true';
     const savedProxyType = getProxyType();
     
     setFormState(prev => ({
       ...prev,
       supabaseUrl: savedUrl || '',
       supabaseKey: savedKey || '',
-      useProxy: proxyEnabled,
-      proxyType: savedProxyType
+      useProxy: proxyEnabled === false ? false : true, // 저장된 값이 명시적으로 false인 경우에만 false, 아니면 기본값 true
+      proxyType: savedProxyType || 'cloudflare'
     }));
   }, []);