SunGe.skill
This is an alias for the SunYuchen skill, not a second separate instance.
Immediately read and fully execute the sibling directory's ../SunYuchen/SKILL.md. A timeline, source citations for each claim, and material boundary notes are required. Then read ../SunYuchen/references/证据与时间线.md. Do not replace the main skill with this file's brief description.