Guizang Social Card Skill Create polished social card packages for Xiaohongshu/Rednote, WeChat Official Account, article covers, and platform thumbnails. This skill is self-contained. It borrows visual principles from the Guizang PPT style system, but it must not edit the original PPT skill, its templates, or its references. If the original PPT skill is available, you may read it for reference only. Generated work must live in a task folder, not in the skill root. Default to inside this repository, or use the explicit output folder requested by the user. Do not create root-level task folders…