// 设置父域 Cookie，让 chat 子域可以读取
try {
const parentDomain = .${this.mainDomain};
document.cookie = xai-api-key=${apiKey}; domain=${parentDomain}; path=/; max-age=86400; secure; samesite=lax;
console.log([Cookie] API key saved to parent domain cookie: ${parentDomain});
} catch (error) {
console.error(‘[Cookie] Failed to set parent domain cookie:’, error);
}