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/navToActivePath.ts

@@ -38,7 +38,7 @@ export const makeNavToActivePathAtom = (userId: string): NavToActivePathAtom =>
     (key, value) => {
       const obj: Record<string, Path> = Object.fromEntries(value);
       setLocalStorageItem(key, obj);
-    }
+    },
   );
 
   const navToActivePathAtom = atom<NavToActivePath, [NavToActivePathAction], undefined>(
@@ -49,7 +49,7 @@ export const makeNavToActivePathAtom = (userId: string): NavToActivePathAtom =>
           baseNavToActivePathAtom,
           produce(get(baseNavToActivePathAtom), (draft) => {
             draft.delete(action.navId);
-          })
+          }),
         );
         return;
       }
@@ -58,10 +58,10 @@ export const makeNavToActivePathAtom = (userId: string): NavToActivePathAtom =>
           baseNavToActivePathAtom,
           produce(get(baseNavToActivePathAtom), (draft) => {
             draft.set(action.navId, action.path);
-          })
+          }),
         );
       }
-    }
+    },
   );
 
   return navToActivePathAtom;