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/room-nav/RoomNavCategoryButton.tsx

@@ -23,5 +23,5 @@ export const RoomNavCategoryButton = as<'button', { closed?: boolean }>(
         {children}
       </Text>
     </Chip>
-  )
+  ),
 );

src/app/features/room-nav/RoomNavItem.tsx

@@ -216,7 +216,7 @@ const RoomNavItemMenu = forwardRef<HTMLDivElement, RoomNavItemMenuProps>(
         </Box>
       </Menu>
     );
-  }
+  },
 );
 
 function CallChatToggle() {
@@ -261,7 +261,7 @@ function RoomNavItem_({
   const [menuAnchor, setMenuAnchor] = useState<RectCords>();
   const unread = useRoomUnread(room.roomId, roomToUnreadAtom);
   const typingMember = useRoomTypingMember(room.roomId).filter(
-    (receipt) => receipt.userId !== mx.getUserId()
+    (receipt) => receipt.userId !== mx.getUserId(),
   );
 
   const roomName = useRoomName(room);
@@ -296,7 +296,7 @@ function RoomNavItem_({
 
     const hasCallPermission = permissions.stateEvent(
       StateEvent.GroupCallMemberPrefix,
-      mx.getSafeUserId()
+      mx.getSafeUserId(),
     );
 
     // Do not join if missing permissions or no livekit support or no webRTC support