feat: enhance UI in DashboardPage, ExtractionsPage, SettingsPage, and UsersPage with improved layout and descriptions

src/pages/admin/SettingsPage.tsx

@@ -82,10 +82,15 @@ export function SettingsPage() {
         ]
       }}
     >
-      <div className="flex-1 space-y-6">
-        <div className="flex justify-between items-center">
-          <h1 className="text-3xl font-bold">System Settings</h1>
-          <SettingsIcon className="h-8 w-8" />
+      <div className="flex-1 rounded-xl bg-muted/50 p-4">
+        <div className="flex items-center justify-between mb-6">
+          <div>
+            <h1 className="text-2xl font-bold">System Settings</h1>
+            <p className="text-muted-foreground">
+              Manage system-wide settings and operations
+            </p>
+          </div>
+          <SettingsIcon className="h-6 w-6 text-muted-foreground" />
         </div>
 
         <div className="grid gap-6 md:grid-cols-2">