- `crates/ui-egui/locales/zh-Hans.toml`: Simplified Chinese, translated from our English catalog:
every UI string (1,371 keys), command label (524) and menu wording (29), 1,924 entries. Concise UI
style, full-width punctuation in Chinese text, a space between Chinese and Latin words or numbers;
plural entries give only `other`. `[meta] status = "draft — needs native review"`; registered as
a draft (not in `COMPLETE`), like fr/de/pt-BR/ja/ko.
- Preferences > Language shows the native name (Simplified Chinese in Chinese characters).
- Detection: zh, zh-CN, zh-SG, zh-Hans, zh-Hans-CN (and zh-Hans-HK) -> zh-Hans. Traditional Chinese
(zh-Hant, zh-TW, zh-HK, zh-MO, zh_TW.UTF-8) has no catalog: it resolves to English, or to the next
OS language in the list, never to Simplified (before this, the regional fallback would have picked
zh-Hans for zh-TW).
- `plural_one` never picks "one" for zh-Hans.
- CJK UI fonts (`cjk.rs`, `theme.rs`, `lib.rs`):
- `cjk::samples` takes the UI language's scripts: a Chinese UI puts Han first, looked up in the
Chinese faces first (Noto Sans CJK SC, Microsoft YaHei UI / YaHei, PingFang SC, ...), even when
the document also has kana.
- `install_fonts`: in a Chinese UI the craft-fonts build's built-in Japanese BIZ UDPGothic goes
after the system faces and doesn't count as drawing Han, so Han takes Simplified Chinese shapes
instead of Japanese ones (and characters BIZ lacks no longer mix in from another face).
- The installed CJK faces are keyed by UI language too, so switching languages lays them out
again (before: switching from Japanese to Chinese kept the Japanese face in front).
- `pref.language` params doc and `docs/mcp.md` list zh-Hans.
- Docs: localization-parity, translating, target-app-parity, ROADMAP, gaps (gap 5), roadmap (focus
item 4). String counts re-measured from source: 1,371 UI keys, 524 command labels, 29 menu
wordings (1,924 entries; the docs said 1,899); fr/de/pt-BR/ja/ko drafts have 1,899 of them (25
strings added since read English), graded 99%. Localization 36% -> 39%, 31-54 h -> 29-51 h; ready
for real work unchanged (~53%); full parity ~267-527 h -> ~265-524 h.
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