fb5 UI-TW: the machine-translation mark — _meta.machineTranslated: true, a new optional manifest field of a language pack (docs/PACKS.md): shared/i18nPacks.js langFields reads it (true or false), shared/packs.js normalizeManifest warns about a value that is not a boolean (read as false; the pack still loads) and packIndexEntry passes it into the index entry like complete (only when true), so the client's registry has it from the index (langMetaOf → registerLangs → langInfo) or from the pack's own _meta without one; 设置 shows a note under the language switch while the CURRENT language's pack has it (ui/lang.js machineTranslationNote, msgid 「当前语言的界面文字为机器翻译，可能不够准确，欢迎在 GitHub 上指正。」 — English in en.json, 目前語言的介面文字為機器翻譯… in zh-TW.json; ja / ko leave it to the integrator); tests: test/i18n-packs.test.js (the field from the manifest through the index to langInfo, the warning, the shipped zh-TW manifest, the note shown / hidden by language), test/ui/i18n.e2e.test.js (the shipped packs' own UI strings read from their files — zh-TW now 開始 — and the 设置 note, none in Chinese); docs/I18N.md says how the zh-TW pack is made (OpenCC twp, the official TW terms, a manual pass; a later msgid the same way) and that the ja / ko strings are machine translations open to corrections (edit public/i18n/<code>.json, node tools/i18n.mjs check <code> --strict)

shared/i18nPacks.js

@@ -20,6 +20,8 @@
 //                 pack for it — pt-BR → pt; never the Chinese source, so zh-TW has none); null switches it off
 //   fallback      packs tried after the base, before the Chinese msgid (["en"]: untranslated strings show English)
 //   complete      true: `node tools/i18n.mjs check` requires every msgid (English declares it)
+//   machineTranslated  true: the UI strings are machine translations (or a machine conversion, zh-TW); the 设置 dialog
+//                 says so under the language switch while the language is in use (ui/lang.js machineTranslationNote)
 //   numberUnits   two units for numbers counted in 10⁴ / 10⁸ steps (Chinese 万 / 亿; e.g. a Japanese pack ["万", "億"]);
 //                 without them large numbers use K / M / B (ui/gameLogic/format.js fmtNum)
 // The common fields (id, version, app, name, englishName, authors, credits, license) are shared/packs.js's.
@@ -84,7 +86,8 @@ export function langList(v) {
 }
 
 /**
- * @typedef {{ lang: string, base: string|null|undefined, fallback: string[], complete: boolean, numberUnits: string[]|null }} LangFields
+ * @typedef {{ lang: string, base: string|null|undefined, fallback: string[], complete: boolean, machineTranslated: boolean,
+ *   numberUnits: string[]|null }} LangFields
  */
 
 /**
@@ -101,7 +104,10 @@ export function langFields(code, m) {
   else if (typeof o.base === 'string') base = canonicalLang(o.base);
   if (base === SOURCE_LANG || base === code) base = null;
   const units = Array.isArray(o.numberUnits) && o.numberUnits.length === 2 && o.numberUnits.every((u) => str(u, 8)) ? o.numberUnits.map((u) => str(u, 8)) : null;
-  return { lang: code, base, fallback: langList(o.fallback).filter((c) => c !== code), complete: o.complete === true, numberUnits: units };
+  return {
+    lang: code, base, fallback: langList(o.fallback).filter((c) => c !== code), complete: o.complete === true,
+    machineTranslated: o.machineTranslated === true, numberUnits: units,
+  };
 }
 
 /**