feat: implement redirect after login functionality across multiple pages

app/[locale]/auth/callback/page.tsx

@@ -53,7 +53,15 @@ function OAuthCallbackInner() {
           sessionStorage.removeItem("oauth_state");
           sessionStorage.removeItem("oauth_code_verifier");
           sessionStorage.removeItem("oauth_server_url");
-          router.push(`/${params.locale}`);
+          let redirectTo = `/${params.locale}`;
+          try {
+            const saved = sessionStorage.getItem('redirect_after_login');
+            if (saved) {
+              sessionStorage.removeItem('redirect_after_login');
+              redirectTo = saved;
+            }
+          } catch {}
+          router.push(redirectTo);
         } else {
           setError("token_exchange_failed");
         }

app/[locale]/calendar/page.tsx

@@ -77,6 +77,7 @@ export default function CalendarPage() {
 
   useEffect(() => {
     if (!isAuthenticated) {
+      try { sessionStorage.setItem('redirect_after_login', window.location.pathname); } catch {}
       router.push("/login");
     } else if (!supportsCalendar) {
       router.push("/");

app/[locale]/contacts/page.tsx

@@ -79,6 +79,7 @@ export default function ContactsPage() {
 
   useEffect(() => {
     if (!isAuthenticated) {
+      try { sessionStorage.setItem('redirect_after_login', window.location.pathname); } catch {}
       router.push("/login");
     }
   }, [isAuthenticated, router]);

app/[locale]/login/page.tsx

@@ -93,7 +93,15 @@ export default function LoginPage() {
 
   useEffect(() => {
     if (isAuthenticated) {
-      router.push('/');
+      let redirectTo = '/';
+      try {
+        const saved = sessionStorage.getItem('redirect_after_login');
+        if (saved) {
+          sessionStorage.removeItem('redirect_after_login');
+          redirectTo = saved;
+        }
+      } catch {}
+      router.push(redirectTo);
     }
   }, [isAuthenticated, router]);
 
@@ -299,14 +307,30 @@ export default function LoginPage() {
 
     if (success) {
       saveUsername(formData.username);
-      router.push('/');
+      let redirectTo = '/';
+      try {
+        const saved = sessionStorage.getItem('redirect_after_login');
+        if (saved) {
+          sessionStorage.removeItem('redirect_after_login');
+          redirectTo = saved;
+        }
+      } catch {}
+      router.push(redirectTo);
     }
   };
 
   const handleDevLogin = async () => {
     const success = await login(serverUrl, "dev@localhost", "dev");
     if (success) {
-      router.push('/');
+      let redirectTo = '/';
+      try {
+        const saved = sessionStorage.getItem('redirect_after_login');
+        if (saved) {
+          sessionStorage.removeItem('redirect_after_login');
+          redirectTo = saved;
+        }
+      } catch {}
+      router.push(redirectTo);
     }
   };
 

app/[locale]/page.tsx

@@ -264,6 +264,7 @@ export default function Home() {
   // Redirect to login if not authenticated
   useEffect(() => {
     if (initialCheckDone && !isAuthenticated && !authLoading) {
+      try { sessionStorage.setItem('redirect_after_login', window.location.pathname); } catch {}
       router.push('/login');
     }
   }, [initialCheckDone, isAuthenticated, authLoading, router]);

app/[locale]/settings/page.tsx

@@ -35,6 +35,7 @@ export default function SettingsPage() {
 
   useEffect(() => {
     if (!isAuthenticated) {
+      try { sessionStorage.setItem('redirect_after_login', window.location.pathname); } catch {}
       router.push('/login');
     }
   }, [isAuthenticated, router]);