chore: remove solana wallet stack

frontend/src/app/admin/page.tsx

@@ -46,8 +46,7 @@ interface User {
   email: string | null;
   isAdmin: boolean;
   isActive: boolean;
-  walletAddress: string | null;
-  totalEarned: number;
+    totalEarned: number;
   totalSpent: number;
   watchTimeMinutes: number;
   createdAt: string;
@@ -256,7 +255,6 @@ export default function AdminPage() {
                         <div className="flex gap-2 mt-1">
                           {u.isAdmin && <Badge variant="default">Admin</Badge>}
                           {!u.isActive && <Badge variant="destructive">Inactive</Badge>}
-                          {u.walletAddress && <Badge variant="secondary">Wallet</Badge>}
                         </div>
                       </div>
                       <div className="text-right">