Function cleaner

entrypoints/utils/cache.ts:59–67

()

    // 24h 清理一次缓存（每次页面打开即 main.js 时都应该调用）
    cleaner() {
        const lastSessionTimestamp = localStorage.getItem('flLastSessionTimestamp');
        const currentTime = Date.now();

        if (!lastSessionTimestamp || currentTime - parseInt(lastSessionTimestamp) > 24 * 3600000) {
            this.clean();
            localStorage.setItem('flLastSessionTimestamp', currentTime.toString());
        }
    },

    // 清除当前 url.host 的翻译缓存
    clean() {