chore(frontend): update dependencies and adapt to oxlint 1.79

npm install was failing with ERESOLVE: the lockfile pinned storybook 10.5.7
and vitest 4.1.10 as peers while package.json asked for ^10.5.9 and ^4.1.11,
and npm would not move either. Neither npm update, a targeted install, nor
--package-lock-only broke the cycle, so node_modules and package-lock.json
were regenerated from scratch (601 packages, 0 vulnerabilities).

oxlint 1.79.0 then promoted five React Compiler rules into the correctness
category, flagging 101 pre-existing sites. 1.78.0 exits 0 on the same tree,
so nothing in our code changed - the rule set grew. They are fixed rather
than suppressed:

- refs (31): latest-value ref writes moved out of render into an effect.
  onlineClientsRef turned out to be write-only and is gone; expireDiffRef
  and trafficDiffRef were replaced by reading the values directly.
- set-state-in-effect (55): reset-on-open modals now adjust state during
  render; where an effect mixed a synchronous reset with an async fetch, the
  reset moved to render and the effect kept only the request. useMediaQuery
  became useSyncExternalStore.
- preserve-manual-memoization (11): optional-chained deps the compiler cannot
  match, hoisted to locals or dropped where the memo wrapped a string concat.
- purity (3): Date.now() in render replaced by a state-backed clock, which
  also refreshes the expiry tag every 60s instead of freezing it until the
  next unrelated re-render.
- immutability (1): applyClientStatsEvent merged websocket traffic into
  DBInbound rows in place; it now rebuilds only the rows it touches.

Two things fell out of that. clientCount is derived with useMemo instead of
an imperative rebuildClientCount() called from five sites, which also fixes a
staleness bug where changing the expiry or traffic threshold left the counts
alone until some later rebuild. statsVersion existed only to force a
re-render after an in-place mutation, is meaningless now that rows are
replaced, and nothing read it, so it is removed.

Also adds a lint:fix script - oxlint --fix was previously only reachable
through the lint-staged hook.

frontend/src/pages/clients/ClientInfoModal.tsx

@@ -109,14 +109,20 @@ export default function ClientInfoModal({
     keyof typeof SUBSCRIPTION_DOWNLOAD_NAMES | null
   >(null);
 
-  useEffect(() => {
-    if (!open) {
+  // Clearing on close happens during render; the effect owns only the fetch.
+  const openSubId = open ? (client?.subId ?? '') : null;
+  const [syncedSubId, setSyncedSubId] = useState(openSubId);
+  if (openSubId !== syncedSubId) {
+    setSyncedSubId(openSubId);
+    if (openSubId === null) {
       setLinks([]);
       setClientIps([]);
       setIpsModalOpen(false);
-      return;
     }
-    if (!client?.subId) return;
+  }
+
+  useEffect(() => {
+    if (!open || !client?.subId) return;
     let cancelled = false;
     (async () => {
       const msg = (await HttpUtil.get(
@@ -139,22 +145,16 @@ export default function ClientInfoModal({
     return r > 0 ? r : 0;
   }, [totalBytes, used]);
 
-  const subLink = useMemo(() => {
-    if (!client?.subId || !subSettings?.subURI) return '';
-    return subSettings.subURI + client.subId;
-  }, [client?.subId, subSettings?.subURI]);
-
-  const subJsonLink = useMemo(() => {
-    if (!client?.subId) return '';
-    if (!subSettings?.subJsonEnable || !subSettings?.subJsonURI) return '';
-    return subSettings.subJsonURI + client.subId;
-  }, [client?.subId, subSettings?.subJsonEnable, subSettings?.subJsonURI]);
-
-  const subClashLink = useMemo(() => {
-    if (!client?.subId) return '';
-    if (!subSettings?.subClashEnable || !subSettings?.subClashURI) return '';
-    return subSettings.subClashURI + client.subId;
-  }, [client?.subId, subSettings?.subClashEnable, subSettings?.subClashURI]);
+  const subId = client?.subId;
+  const subLink = subId && subSettings?.subURI ? subSettings.subURI + subId : '';
+  const subJsonLink =
+    subId && subSettings?.subJsonEnable && subSettings?.subJsonURI
+      ? subSettings.subJsonURI + subId
+      : '';
+  const subClashLink =
+    subId && subSettings?.subClashEnable && subSettings?.subClashURI
+      ? subSettings.subClashURI + subId
+      : '';
 
   const showSubscription = !!(subSettings?.enable && client?.subId);
   const wgInbound = useMemo(