Fix settings page loading bug and add error handling

app/[lang]/dashboard/settings/page.tsx

@@ -9,6 +9,7 @@ export default function SettingsPage() {
   const [profile, setProfile] = useState<any>(null);
   const [waStatus, setWaStatus] = useState<any>(null);
   const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
   const [saving, setSaving] = useState(false);
   const dict = useDictionary();
 
@@ -16,7 +17,6 @@ export default function SettingsPage() {
     fetchProfile();
     fetchWaStatus();
     
-    // Check WA status every 5 seconds if not connected
     const interval = setInterval(() => {
       fetchWaStatus();
     }, 5000);
@@ -25,10 +25,21 @@ export default function SettingsPage() {
   }, []);
 
   const fetchProfile = async () => {
-    const res = await fetch("/api/users/profile");
-    const data = await res.json();
-    setProfile(data);
-    setLoading(false);
+    try {
+      const res = await fetch("/api/users/profile");
+      const data = await res.json();
+      if (data.error) {
+        setError(data.error);
+      } else if (!data) {
+        setError("Kullanıcı profili bulunamadı.");
+      } else {
+        setProfile(data);
+      }
+    } catch (e: any) {
+      setError(e.message);
+    } finally {
+      setLoading(false);
+    }
   };
 
   const fetchWaStatus = async () => {
@@ -45,20 +56,27 @@ export default function SettingsPage() {
     e.preventDefault();
     setSaving(true);
     try {
-      await fetch("/api/users/profile", {
+      const res = await fetch("/api/users/profile", {
         method: "PATCH",
         headers: { "Content-Type": "application/json" },
         body: JSON.stringify(profile)
       });
-      alert("Ayarlar kaydedildi!");
-    } catch (e) {
-      console.error(e);
+      if (res.ok) {
+        alert("Ayarlar kaydedildi!");
+      } else {
+        const data = await res.json();
+        alert("Hata: " + data.error);
+      }
+    } catch (e: any) {
+      alert("Hata: " + e.message);
     } finally {
       setSaving(false);
     }
   };
 
   if (loading) return <div className="page-body"><span className="spinner" /></div>;
+  if (error) return <div className="page-body"><div className="card" style={{ color: "var(--error)" }}>Hata: {error}</div></div>;
+  if (!profile) return <div className="page-body">Profil yüklenemedi.</div>;
 
   return (
     <>