Move to @pezkuwi/dev 0.86.4 (eslint 10 toolchain)

- dev ^0.86.4 at the root and in packages/apps; directives renamed by
  pezkuwi-dev-migrate-eslint10.
- eslint --fix with the 0.86.4 config; one fix broke syntax
  (typescript-eslint prefer-optional-chain turned
  `(isStarted && onStart) && onStart()` into `(isStarted && onStart?.();`
  in TxButton) and is corrected by hand.
- The remaining findings fixed rather than disabled: optional chains
  (each suggestion reviewed), `cause` on rethrown errors, `if` instead of
  `a && promise` in effects, parallel instead of sequential awaits in
  Promise.all, Error rejections, no `delete` on arrays (the storage query
  cache is a Map; an upload's file list no longer keeps a hole), no
  `[object Object]` stringification (TFunction's second argument is text
  or options), dead code removed (referenda's never-shown expand button,
  react-query's unused CoreDescriptor).

packages/page-broker/src/Overview/Filters.tsx

@@ -40,8 +40,8 @@ function Filters ({ data, onFilter }: Props): React.ReactElement<Props> {
   const coreArr: number[] = useMemo(() =>
     data?.length
       ? Array.from({ length: data.length || 0 }, (_, index) => index)
-      : []
-  , [data]);
+      : [],
+  [data]);
 
   const { t } = useTranslation();
   const teyrchainId = useDebounce(_teyrchainId);

packages/page-broker/src/Overview/Summary/RegionLength.tsx

@@ -19,7 +19,7 @@ function RegionLength ({ children, className }: Props): React.ReactElement<Props
 
   return (
     <div className={className}>
-      {length?.toString() || '-'}
+      {typeof length === 'number' ? length : '-'}
       {children}
     </div>
   );

packages/page-broker/src/Overview/Workload.tsx

@@ -34,8 +34,8 @@ function Workload ({ api, config, core, workload, workplan }: Props): React.Reac
   const { currentRegion, status } = useBrokerContext();
 
   const currentTimeSlice = useMemo(() =>
-    status?.lastTimeslice ?? 0
-  , [status]);
+    status?.lastTimeslice ?? 0,
+  [status]);
 
   const regionInfo = useRegions(api);
   const regionOwnerInfo: RegionInfo | undefined = useMemo(() => regionInfo?.find((v) => v.core === core && v.start <= currentTimeSlice && v.end > currentTimeSlice), [regionInfo, core, currentTimeSlice]);

packages/page-broker/src/Overview/index.tsx

@@ -18,8 +18,8 @@ interface Props {
   className?: string;
 }
 
-type LeaseMapType = Record<number, LegacyLease>
-type ReservationMapType = Record<number, Reservation>
+type LeaseMapType = Record<number, LegacyLease>;
+type ReservationMapType = Record<number, Reservation>;
 
 const formatDataObject = (one: CoreWorkplan | CoreWorkload, leaseMap: LeaseMapType, reservationMap: ReservationMapType) => ({
   ...one,