Script / 脚本：
https://raw.githubusercontent.com/Ingrass/IITC-portal-Images/refs/heads/main/portal-Images.user.js
Loads small portal images with a maximum length of 40px first for saving data.
首先加载最大长度为40px的小图片以节省数据。
When the mouse hovers over an image, it enlarges to show the normal resolution.
当鼠标悬停时，图片会放大显示正常分辨率。
Portal images are clickable like basic portal points.
图片可以像portal点一样点选。
Works with both CE and old IITC.
适用于CE和旧版IITC。
Border size and background opacity scale with portal level
边框粗細和背景透明度随 portal 等级变化
