优化新首页回顶按钮并修复退出登录流程

components/home/lovart-home.tsx

@@ -23,7 +23,6 @@ import {
   Monitor,
   Palette,
   Plus,
-  Send,
   Settings,
   Sparkles,
   Star,
@@ -562,6 +561,21 @@ export function LovartHome({
   const canUseDingTalkLogin = Boolean(authSettingsData?.isDingTalkEnabled);
   const hasThirdPartyLoginOptions = canUseGoogleLogin || canUseDingTalkLogin;
 
+  const handleLogout = async () => {
+    try {
+      await fetch("/api/auth/logout", { method: "POST" });
+    } catch (_error) {}
+
+    try {
+      await signOut({
+        callbackUrl: "/",
+        redirect: false,
+      });
+    } catch (_error) {}
+
+    window.location.replace("/");
+  };
+
   useEffect(() => {
     if (selectedModelId) return;
     const defaultModelId = siteSettingsData?.canvasDefaultModelId || "auto";
@@ -1134,7 +1148,7 @@ export function LovartHome({
                         icon={LogOut}
                         label="退出登录"
                         onClick={() => {
-                          void signOut({ redirect: true, callbackUrl: "/" });
+                          void handleLogout();
                         }}
                       />
                     </div>
@@ -1576,10 +1590,11 @@ export function LovartHome({
 
       <button
         type="button"
+        title="回到顶部"
         className="fixed bottom-8 right-8 z-20 flex h-11 w-11 items-center justify-center rounded-full border border-black/10 bg-white text-black/50 shadow hover:text-black"
         onClick={() => window.scrollTo({ top: 0, behavior: "smooth" })}
       >
-        <Send className="h-4 w-4 -rotate-90" />
+        <ArrowUp className="h-4 w-4" />
       </button>
 
       {loginDialogOpen ? (
@@ -1754,7 +1769,7 @@ export function LovartHome({
                           variant="ghost"
                           className="h-8 rounded-xl border border-black/10 bg-white px-3 text-[12px] text-black/75 hover:bg-black/5"
                           onClick={() => {
-                            void signOut({ redirect: true, callbackUrl: "/" });
+                            void handleLogout();
                           }}
                         >
                           退出登录