feat: surface platform errors in copyable dialogs

src/components/custom-world-home/CustomWorldCreationStartCard.tsx

@@ -1,5 +1,5 @@
 import { Coins, Trophy } from 'lucide-react';
-import { useMemo, useState, type UIEvent } from 'react';
+import { type UIEvent,useMemo, useState } from 'react';
 
 import type { CreationEntryConfig } from '../../services/creationEntryConfigService';
 import {
@@ -10,7 +10,6 @@ import {
 
 type CustomWorldCreationStartCardProps = {
   busy?: boolean;
-  error?: string | null;
   entryConfig: CreationEntryConfig;
   creationTypes: readonly PlatformCreationTypeCard[];
   onCreateType: (type: PlatformCreationTypeId) => void;
@@ -25,7 +24,6 @@ function shouldShowCreationBadge(badge: string) {
 
 export function CustomWorldCreationStartCard({
   busy = false,
-  error = null,
   entryConfig,
   creationTypes,
   onCreateType,
@@ -233,11 +231,6 @@ export function CustomWorldCreationStartCard({
           })}
         </div>
 
-        {error ? (
-          <div className="platform-banner platform-banner--danger mt-4 rounded-[1rem] px-3 py-2 text-sm leading-5 sm:rounded-[1.25rem] sm:leading-6">
-            {error}
-          </div>
-        ) : null}
       </section>
     </div>
   );