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/hosts/HostFormModal.tsx

@@ -1,4 +1,4 @@
-import { useEffect, useMemo, useState } from 'react';
+import { useMemo, useState } from 'react';
 import { useTranslation } from 'react-i18next';
 import { Form, Input, InputNumber, Modal, Select, Switch, Tabs, message } from 'antd';
 import {
@@ -94,12 +94,17 @@ export default function HostFormModal({
   const showTls = security === 'tls' || security === 'reality';
   const showTlsExtras = security === 'tls';
 
-  useEffect(() => {
+  // React resets this during render rather than in an effect so the modal's
+  // first open frame already shows cleared fields.
+  const openHost = open ? host : null;
+  const [syncedHost, setSyncedHost] = useState(openHost);
+  if (openHost !== syncedHost) {
+    setSyncedHost(openHost);
     if (open) {
       methods.reset(defaultsFor(host));
       setLoading(false);
     }
-  }, [open, host, methods]);
+  }
 
   const { nodes } = useNodesQuery();
 

frontend/src/pages/hosts/json-forms/HostFinalMaskForm.tsx

@@ -35,7 +35,9 @@ export default function HostFinalMaskForm({
   const [form] = Form.useForm();
   const [initial] = useState(() => parseFinalMask(value));
   const onChangeRef = useRef(onChange);
-  onChangeRef.current = onChange;
+  useEffect(() => {
+    onChangeRef.current = onChange;
+  });
 
   const finalmask = Form.useWatch('finalmask', form) as FinalMaskStreamSettings | undefined;