ability to ban and unban users

frontend/src/types/index.ts

@@ -33,6 +33,11 @@ export interface User {
   stripeConnectedAccountId?: string;
   addresses?: Address[];
   itemRequestNotificationRadius?: number;
+  // Ban-related fields (only visible to admins)
+  isBanned?: boolean;
+  bannedAt?: string;
+  bannedBy?: string;
+  banReason?: string;
 }
 
 export interface Message {