i18n: write zh-Hant as zh-CN in Traditional characters

Rebuild the zh-Hant catalog from zh-CN with OpenCC s2tw glyph
conversion, so wording and terminology match zh-CN and only the
script differs. Drop Taiwan-specific vocabulary and wording notes;
zh-TW/HK/MO browser tags still select zh-Hant.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

docs/CURRENT-STATE.md

@@ -3744,7 +3744,7 @@ Shipped locales: **en** (source and fallback), **es**, **ru**, **zh-CN** and **z
   value). English has no catalog; every other locale is
   `src/i18n/locales/<code>.json`, and a missing entry falls back to English.
 - **Locale choice.** `?lang=` → stored choice (`gev:locale:v1`) →
-  `navigator.languages` → English. Chinese tags default to `zh-CN`; `Hant`, `TW`, `HK` and `MO`
+  `navigator.languages` → English. Chinese tags default to `zh-CN`; Traditional Chinese tags
   select `zh-Hant`. Explicit `Hans` selects `zh-CN` regardless of region. `?lang=` is not stored, and share links drop
   it, so a recipient keeps their own language. The globe picker in the
   bottom-right corner (`src/ui/localePicker.js`) stores the choice, drops

docs/translations/zh-Hant.md

@@ -2,46 +2,14 @@
 
 Catalog: `src/i18n/locales/zh-Hant.json`. General rules: [TRANSLATORS.md](../TRANSLATORS.md).
 
-Sources: caxer (#724), tbdavid2019 (#652), and the zh-CN catalog credited to abiyeenzo (#914) and EDIT-Aeterna (#979). The remaining entries were seeded with OpenCC s2twp and edited for consistency. The catalog retains terminology from these Taiwan-oriented sources; `zh-Hant` identifies the writing system and does not promise separate regional vocabulary.
+`zh-Hant` is the Simplified Chinese catalog (`zh-CN`, credited to abiyeenzo, #914, and EDIT-Aeterna, #979) written in Traditional characters with OpenCC character conversion. Wording and terminology are the same as in `zh-CN`: change a term in [zh-CN.md](./zh-CN.md) and the `zh-CN` catalog first, then convert. Only the script differs.
 
 ## Style
 
-- Use Traditional characters and consistent terminology from the glossary below. Prefer short, neutral instructions: 「點選地圖」、「儲存金鑰」.
-- Use full-width Chinese punctuation and 「」 for quotations. Keep `·`, `…`, provider names, codes and placeholders unchanged.
-- Separate Chinese from Latin letters and numbers with a space: 「AIS 船舶」、「24 小時」. Keep unit symbols unchanged: km, m, km/h, m/s, kn, ft, MW, °, %.
+- Follow [zh-CN.md](./zh-CN.md) for wording, punctuation, spacing, units and the glossary, written in Traditional characters.
 - Relative-time placeholders may already include 前. In `LIVE · updated {age}`, the caller supplies the complete relative age; do not append another 前.
-- Chinese labels have no uppercase variant. Keep button labels short and avoid splitting short words across lines.
-- The picker displays 中文（繁體） / Chinese (Traditional). Browser tags with Hant or TW/HK/MO select the shared `zh-Hant` catalog. Existing `zh-TW` links and saved choices remain supported. Explicit Hans selects Simplified Chinese, including Hans-TW.
+- The picker displays 中文（繁體） / Chinese (Traditional); explicit Hans tags select Simplified Chinese.
 
 ## Plurals
 
-`Intl.PluralRules('zh-Hant')` uses only `other`. Keep suitable measure words: 「{count} 架飛機」、「{count} 艘船」、「{count} 個金鑰」.
-
-## Catalog terminology
-
-| English | Traditional Chinese |
-| --- | --- |
-| data / information | 資料 / 資訊 |
-| file / folder | 檔案 / 資料夾 |
-| settings / save | 設定 / 儲存 |
-| API key / token | API 金鑰 / 權杖 |
-| live / load | 即時 / 載入 |
-| camera / video | 攝影機 / 影片 |
-| network / link | 網路 / 連結 |
-| image / imagery | 圖像 / 影像 |
-| click / double-click | 點選 / 按兩下 |
-| response / timeout | 回應 / 逾時 |
-| layer / data layer | 圖層 / 資料圖層 |
-| cockpit / context | 駕駛艙 / 態勢 |
-| air quality | 空氣品質 |
-| transit / bikeshare | 大眾運輸 / 公共自行車 |
-
-## Context-sensitive terms
-
-- Weather `CLEAR` is 晴; `action|CLEAR` is 清除.
-- `LOCAL INFO` describes 在地資訊; 本機 refers to the local device.
-- Observation windows describe 範圍, not a UI 視窗. The scope control is 視域 and its feather slider is 視域邊緣羽化.
-- Roundabouts are 圓環; telemetry is 回報; weather advisories are 發布.
-- Intercardinal compass points: NNE 北北東, ENE 東北東, ESE 東南東, SSE 南南東, SSW 南南西, WSW 西南西, WNW 西北西, NNW 北北西.
-- The Celestial control and its help text use 天球環. An uncalibrated camera's `RAW PRIOR` is 原始推估.
-- `Wind unavailable` is shared by cyclone wind-speed cards and the wind-field layer; keep the wording broad enough for both (風況資料不可用).
+`Intl.PluralRules('zh-Hant')` uses only `other`. Keep the measure words of the `zh-CN` entry: 「{count} 架飛機」、「{count} 艘船」.