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/components/emoji-board/EmojiBoard.tsx

@@ -71,7 +71,7 @@ type StickerGroupItem = {
 
 const useGroups = (
   tab: EmojiBoardTab,
-  imagePacks: ImagePack[]
+  imagePacks: ImagePack[],
 ): [EmojiGroupItem[], StickerGroupItem[]] => {
   const mx = useMatrixClient();
 
@@ -309,7 +309,7 @@ function EmojiGroupHolder({
         shortcode: emojiInfo.shortcode,
       });
     },
-    [setPreviewData]
+    [setPreviewData],
   );
 
   const throttleEmojiHover = useThrottle(handleEmojiPreview, {
@@ -385,7 +385,7 @@ export function EmojiBoard({
 
   const previewAtom = useMemo(
     () => createPreviewDataAtom(emojiTab ? DefaultEmojiPreview : undefined),
-    [emojiTab]
+    [emojiTab],
   );
   const activeGroupIdAtom = useMemo(() => atom<string | undefined>(undefined), []);
   const setActiveGroupId = useSetAtom(activeGroupIdAtom);
@@ -404,7 +404,7 @@ export function EmojiBoard({
   const [result, search, resetSearch] = useAsyncSearch(
     searchList,
     getEmoticonSearchStr,
-    SEARCH_OPTIONS
+    SEARCH_OPTIONS,
   );
 
   const searchedItems = result?.items.slice(0, 100);
@@ -416,9 +416,9 @@ export function EmojiBoard({
         if (term) search(term);
         else resetSearch();
       },
-      [search, resetSearch]
+      [search, resetSearch],
     ),
-    { wait: 200 }
+    { wait: 200 },
   );
 
   const contentScrollRef = useRef<HTMLDivElement>(null);

src/app/components/emoji-board/useEmojiGroupIcons.ts

@@ -17,5 +17,5 @@ export const useEmojiGroupIcons = (): IEmojiGroupIcons =>
       [EmojiGroupId.Symbol]: Icons.Peace,
       [EmojiGroupId.Flag]: Icons.Flag,
     }),
-    []
+    [],
   );

src/app/components/emoji-board/useEmojiGroupLabels.ts

@@ -15,5 +15,5 @@ export const useEmojiGroupLabels = (): IEmojiGroupLabels =>
       [EmojiGroupId.Symbol]: 'Symbols',
       [EmojiGroupId.Flag]: 'Flags',
     }),
-    []
+    [],
   );