chore: upgrade i18next 26, prettier 3, fontsource-variable, domhandler 6, lint-staged 17

- i18next 23->26 + react-i18next 15->17
- prettier 2->3, reformat all files
- replace @fontsource/inter with @fontsource-variable/inter 5, update import path
- domhandler 5->6 (aligns with transitive deps)
- lint-staged 16->17

src/app/features/settings/general/General.tsx

@@ -85,7 +85,7 @@ const ThemeSelector = as<'div', ThemeSelectorProps>(
         ))}
       </Box>
     </Menu>
-  )
+  ),
 );
 
 function SelectTheme({ disabled }: { disabled?: boolean }) {
@@ -321,7 +321,7 @@ function Appearance() {
   const [twitterEmoji, setTwitterEmoji] = useSetting(settingsAtom, 'twitterEmoji');
   const [perMessageProfiles, setPerMessageProfiles] = useSetting(
     settingsAtom,
-    'perMessageProfiles'
+    'perMessageProfiles',
   );
   const [lotusTerminal, setLotusTerminal] = useSetting(settingsAtom, 'lotusTerminal');
 
@@ -831,7 +831,7 @@ function Calls() {
   const [cameraOnJoin, setCameraOnJoin] = useSetting(settingsAtom, 'cameraOnJoin');
   const [callNoiseSuppression, setCallNoiseSuppression] = useSetting(
     settingsAtom,
-    'callNoiseSuppression'
+    'callNoiseSuppression',
   );
   const [pttMode, setPttMode] = useSetting(settingsAtom, 'pttMode');
   const [pttKey, setPttKey] = useSetting(settingsAtom, 'pttKey');
@@ -843,7 +843,7 @@ function Calls() {
       if (keyListenerRef.current)
         window.removeEventListener('keydown', keyListenerRef.current, true);
     },
-    []
+    [],
   );
 
   const handleKeyBind = useCallback(() => {
@@ -1104,15 +1104,15 @@ function SelectMessageSpacing() {
 function Messages() {
   const [legacyUsernameColor, setLegacyUsernameColor] = useSetting(
     settingsAtom,
-    'legacyUsernameColor'
+    'legacyUsernameColor',
   );
   const [hideMembershipEvents, setHideMembershipEvents] = useSetting(
     settingsAtom,
-    'hideMembershipEvents'
+    'hideMembershipEvents',
   );
   const [hideNickAvatarEvents, setHideNickAvatarEvents] = useSetting(
     settingsAtom,
-    'hideNickAvatarEvents'
+    'hideNickAvatarEvents',
   );
   const [mediaAutoLoad, setMediaAutoLoad] = useSetting(settingsAtom, 'mediaAutoLoad');
   const [urlPreview, setUrlPreview] = useSetting(settingsAtom, 'urlPreview');