fix: cleanup

frontend/src/components/library/FinishedBooksShelf.tsx

@@ -2,7 +2,7 @@ import { useEffect, useState } from "react";
 import { useTranslation } from "react-i18n-lite";
 import styles from "./FinishedBooksShelf.module.css";
 
-export interface ShelfBook {
+interface ShelfBook {
   id: number;
   title: string;
   author: string;

frontend/src/components/library/LibraryBookCard.tsx

@@ -2,14 +2,14 @@ import { useTranslation } from "react-i18n-lite";
 import { readingStatusKey } from "@/locales";
 import styles from "../../pages/Library.module.css";
 
-export const LIBRARY_STATUS_COLORS: Record<string, { bg: string; text: string }> = {
+const LIBRARY_STATUS_COLORS: Record<string, { bg: string; text: string }> = {
   want_to_read: { bg: "#dbeafe", text: "#1d4ed8" },
   reading: { bg: "#dcfce7", text: "#16a34a" },
   finished: { bg: "#f3e8ff", text: "#9333ea" },
   dnf: { bg: "#fef3c7", text: "#b45309" },
 };
 
-export interface LibraryBookCardData {
+interface LibraryBookCardData {
   id: number;
   title: string;
   author: string;