devfront 로그인 페이지 auto redirect SSO 진입 추가

devfront/src/features/auth/AuthCallbackPage.tsx

@@ -17,12 +17,19 @@ export default function AuthCallbackPage() {
     }
 
     if (auth.isAuthenticated) {
-      navigate("/", { replace: true });
+      const returnTo =
+        typeof auth.user?.state === "object" &&
+        auth.user?.state !== null &&
+        "returnTo" in auth.user.state &&
+        typeof auth.user.state.returnTo === "string"
+          ? auth.user.state.returnTo
+          : "/clients";
+      navigate(returnTo, { replace: true });
     } else if (auth.error) {
       console.error("Auth Error:", auth.error);
       navigate("/login", { replace: true });
     }
-  }, [auth.isAuthenticated, auth.error, navigate]);
+  }, [auth.isAuthenticated, auth.error, navigate, auth.user?.state]);
 
   return <div>Loading Auth...</div>;
 }

devfront/src/features/auth/LoginPage.tsx

@@ -1,7 +1,8 @@
 import { ExternalLink, LogIn, ShieldHalf } from "lucide-react";
-import { useEffect } from "react";
+import { useEffect, useRef } from "react";
 import { useAuth } from "react-oidc-context";
 import { useNavigate } from "react-router-dom";
+import { useSearchParams } from "react-router-dom";
 import { Button } from "../../components/ui/button";
 import {
   Card,
@@ -14,18 +15,48 @@ import {
 function LoginPage() {
   const auth = useAuth();
   const navigate = useNavigate();
+  const [searchParams] = useSearchParams();
+  const autoStartedRef = useRef(false);
+  const returnTo = searchParams.get("returnTo") || "/clients";
+  const shouldAutoLogin = searchParams.get("auto") === "1";
 
   useEffect(() => {
     if (auth.isAuthenticated) {
-      navigate("/clients", { replace: true });
+      navigate(returnTo, { replace: true });
     }
-  }, [auth.isAuthenticated, navigate]);
+  }, [auth.isAuthenticated, navigate, returnTo]);
+
+  useEffect(() => {
+    if (!shouldAutoLogin) {
+      return;
+    }
+    if (autoStartedRef.current || auth.isLoading || auth.activeNavigator) {
+      return;
+    }
+
+    autoStartedRef.current = true;
+    void auth.signinRedirect({
+      state: {
+        returnTo,
+      },
+    });
+  }, [
+    auth,
+    auth.activeNavigator,
+    auth.isLoading,
+    returnTo,
+    shouldAutoLogin,
+  ]);
 
   const handleSSOLogin = async () => {
     try {
-      await auth.signinPopup();
+      await auth.signinRedirect({
+        state: {
+          returnTo: "/clients",
+        },
+      });
     } catch (error) {
-      console.error("Popup login failed", error);
+      console.error("Redirect login failed", error);
     }
   };