Improve Supabase connection testing

Enhance connection testing to provide more detailed error information.

src/pages/Login.tsx

@@ -4,7 +4,7 @@ import { Link, useNavigate } from "react-router-dom";
 import { Label } from "@/components/ui/label";
 import { Input } from "@/components/ui/input";
 import { Button } from "@/components/ui/button";
-import { ArrowRight, Mail, KeyRound, Eye, EyeOff, RefreshCw } from "lucide-react";
+import { ArrowRight, Mail, KeyRound, Eye, EyeOff, RefreshCw, Shield } from "lucide-react";
 import { useToast } from "@/hooks/useToast.wrapper";
 import { useAuth } from "@/contexts/auth";
 import { testSupabaseConnection } from "@/lib/supabase";
@@ -228,6 +228,15 @@ const Login = () => {
               <p className="font-medium">Supabase URL:</p>
               <p className="break-all bg-gray-100 p-1 rounded">{testResults?.url || '알 수 없음'}</p>
             </div>
+            {testResults?.usingProxy && (
+              <div>
+                <p className="font-medium">CORS 프록시:</p>
+                <div className="flex items-center gap-1">
+                  <Shield className="h-3 w-3 text-blue-500" />
+                  <p className="break-all text-blue-500">활성화됨 - {testResults.proxyUrl}</p>
+                </div>
+              </div>
+            )}
             <div>
               <p className="font-medium">클라이언트 초기화:</p>
               <p>{testResults?.client ? '성공' : '실패'}</p>
@@ -247,6 +256,15 @@ const Login = () => {
                 <p>데이터베이스: {testResults.database ? '✅' : '❌'}</p>
               </div>
             )}
+            <div className="text-right pt-1">
+              <Link 
+                to="/supabase-settings" 
+                className="inline-flex items-center text-neuro-income hover:underline"
+              >
+                <span>Supabase 설정 변경</span>
+                <ArrowRight className="h-3 w-3 ml-1" />
+              </Link>
+            </div>
           </div>
         </details>
       </div>