fix(api): 修复因缺少“电子邮箱”字段导致的 KeyError #24
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在 `_get_info` 函数中，当解析的网页不包含“电子邮箱”等可选字段时，
`pending_result` 字典中会缺少对应的键。
旧代码的逻辑 `("无" if pending_result.get("电子邮箱：") == "" else pending_result["电子邮箱："])` 存在缺陷：
当键不存在时，`.get()` 返回 `None`，导致条件判断为 `False`，
进而执行 `else` 分支中的 `pending_result["电子邮箱："]`，
这种不安全的方括号访问方式直接引发了 `KeyError` 异常，导致程序崩溃。
本次提交通过将所有类似的数据提取逻辑统一修改为更健壮的 `pending_result.get(key) or "无"` 模式，
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在
_get_info函数中，当解析的网页不包含“电子邮箱”等可选字段时，pending_result字典中会缺少对应的键。旧代码的逻辑
("无" if pending_result.get("电子邮箱：") == "" else pending_result["电子邮箱："])存在缺陷： 当键不存在时，.get()返回None，导致条件判断为False，进而执行
else分支中的pending_result["电子邮箱："]，这种不安全的方括号访问方式直接引发了
KeyError异常，导致程序崩溃。本次提交通过将所有类似的数据提取逻辑统一修改为更健壮的
pending_result.get(key) or "无"模式，