Human-annotated gold pairs land as docs/i18n/style-samples.md (bilingual
by construction, excluded from pairing) and outrank prose tone rules.
translation-rules gains a Voice section; shape stays gate-owned so the
writer optimizes for natural Chinese. The skill's translate step becomes
two passes: native-author writing, then clause-level fidelity check.
Terminology rulings: hash -> 哈希 (blob 哈希/提交哈希), HMR and fiber
confirmed as tabled.