fix back sur paramètres

src/app/admin/settings/page.tsx

@@ -73,7 +73,7 @@ function SettingsPageContent() {
     return (
       <div className="min-h-screen bg-slate-50 dark:bg-slate-900">
         <div className="container mx-auto px-4 py-8">
-          <Navigation />
+          <Navigation showBackButton={true} backUrl="/admin" />
           <div className="flex items-center justify-center h-64">
             <div className="text-center">
               <div className="animate-spin rounded-full h-12 w-12 border-b-2 border-slate-900 dark:border-slate-100 mx-auto mb-4"></div>
@@ -88,7 +88,7 @@ function SettingsPageContent() {
   return (
     <div className="min-h-screen bg-slate-50 dark:bg-slate-900">
       <div className="container mx-auto px-4 py-8">
-        <Navigation />
+        <Navigation showBackButton={true} backUrl="/admin" />
         
         {/* Header */}
         <div className="mb-8">