function handleLogout() {
    chrome.storage.local.remove(["token", "loginAt", "username"], () => {
        window.location.href = chrome.runtime.getURL("pages/login.html");
    });
}

async function loadToken() {
    return new Promise((resolve) => {
        chrome.storage.local.get(["token", "username", "loginAt"], async (res) => {
            const mergedConfig = await loadMergedConfig();
            const expireMs = mergedConfig.tokenExpireHours * 60 * 60 * 1000;
            const now = Date.now();
            if (res.token && res.loginAt && now - res.loginAt < expireMs) {
                log("token 加载成功");
                resolve({ token: res.token, username: res.username });
            } else {
                log("token 不存在或已过期");
                resolve(null);
            }
        });
    });
}