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/state/utils/atomWithLocalStorage.ts

@@ -21,7 +21,7 @@ export type SetLocalStorageItem<T> = (key: string, value: T) => void;
 export const atomWithLocalStorage = <T>(
   key: string,
   getItem: GetLocalStorageItem<T>,
-  setItem: SetLocalStorageItem<T>
+  setItem: SetLocalStorageItem<T>,
 ) => {
   const value = getItem(key);
 
@@ -44,7 +44,7 @@ export const atomWithLocalStorage = <T>(
     (get, set, newValue) => {
       set(baseAtom, newValue);
       setItem(key, newValue);
-    }
+    },
   );
 
   return localStorageAtom;