Add duplicate and clear submissions functionality for challenge chains; implement corresponding dialogs and API endpoints, enhancing user experience and task management. Update localization for new features in English and Russian.

src/pages/chains/ChainsListPage.tsx

@@ -18,6 +18,8 @@ import { LoadingSpinner } from '../../components/LoadingSpinner'
 import { ErrorAlert } from '../../components/ErrorAlert'
 import { EmptyState } from '../../components/EmptyState'
 import { ConfirmDialog } from '../../components/ConfirmDialog'
+import { DuplicateChainDialog } from '../../components/DuplicateChainDialog'
+import { ClearSubmissionsDialog } from '../../components/ClearSubmissionsDialog'
 import type { ChallengeChain } from '../../types/challenge'
 import { toaster } from '../../components/ui/toaster'
 
@@ -29,6 +31,8 @@ export const ChainsListPage: React.FC = () => {
 
   const [searchQuery, setSearchQuery] = useState('')
   const [chainToDelete, setChainToDelete] = useState<ChallengeChain | null>(null)
+  const [chainToDuplicate, setChainToDuplicate] = useState<ChallengeChain | null>(null)
+  const [chainToClearSubmissions, setChainToClearSubmissions] = useState<ChallengeChain | null>(null)
   const [updatingChainId, setUpdatingChainId] = useState<string | null>(null)
   const [updateChain] = useUpdateChainMutation()
 
@@ -182,6 +186,21 @@ export const ChainsListPage: React.FC = () => {
                       >
                         {t('challenge.admin.chains.list.button.edit')}
                       </Button>
+                      <Button
+                        size="sm"
+                        variant="ghost"
+                        onClick={() => setChainToDuplicate(chain)}
+                      >
+                        {t('challenge.admin.chains.duplicate.button')}
+                      </Button>
+                      <Button
+                        size="sm"
+                        variant="ghost"
+                        colorPalette="red"
+                        onClick={() => setChainToClearSubmissions(chain)}
+                      >
+                        {t('challenge.admin.chains.clear.submissions.button')}
+                      </Button>
                       <Button
                         size="sm"
                         variant="ghost"
@@ -208,6 +227,18 @@ export const ChainsListPage: React.FC = () => {
         confirmLabel={t('challenge.admin.chains.delete.confirm.button')}
         isLoading={isDeleting}
       />
+
+      <DuplicateChainDialog
+        isOpen={!!chainToDuplicate}
+        onClose={() => setChainToDuplicate(null)}
+        chain={chainToDuplicate}
+      />
+
+      <ClearSubmissionsDialog
+        isOpen={!!chainToClearSubmissions}
+        onClose={() => setChainToClearSubmissions(null)}
+        chain={chainToClearSubmissions}
+      />
     </Box>
   )
 }