fix(i18n): add worktree translation to all 19 third-language dicts (#285)

PR #285 added the zh/en 'worktree' key but the 19 third-language dicts
(de/fr/pt/ko/ar/hi/id/tr/vi/th/ru/it/nl/sv/pl/zhHK/zhTW/zhMO) were missing
it — only ja was patched in the prior commit. The dicts are typed
Record<keyof typeof zh, string> via an unchecked 'as' cast, so tsc did
not catch the gap.

This commit:
- adds the worktree translation to all 19 dicts
- strengthens tests/locales.spec.ts to assert key-set equality for EVERY
  shipped dictionary (not just zh/en/ja), preventing future regressions

src/client/locales-ar.ts

@@ -107,6 +107,7 @@ export const ar: Record<string, string> = {
   commit: 'تثبيت',
   commitError: 'فشل التثبيت',
   branch: 'الفرع',
+  worktree: 'شجرة العمل',
   checkoutError: 'فشل تبديل الفرع',
   history: 'السجل',
   changes: 'التغييرات',

src/client/locales-de.ts

@@ -92,6 +92,7 @@ export const de: Record<string, string> = {
   commit: 'Committen',
   commitError: 'Commit fehlgeschlagen',
   branch: 'Branch',
+  worktree: 'Worktree',
   checkoutError: 'Branchenwechsel fehlgeschlagen',
   history: 'Verlauf',
   changes: 'Änderungen',

src/client/locales-fr.ts

@@ -99,6 +99,7 @@ export const fr: Record<string, string> = {
   commit: 'Valider',
   commitError: 'Échec du commit',
   branch: 'Branche',
+  worktree: 'Arborescence de travail',
   checkoutError: 'Échec du changement de branche',
   history: 'Historique',
   changes: 'Modifications',

src/client/locales-hi.ts

@@ -106,6 +106,7 @@ export const hi: Record<string, string> = {
   commit: 'कमिट',
   commitError: 'कमिट विफल',
   branch: 'ब्रांच',
+  worktree: 'वर्कट्री',
   checkoutError: 'ब्रांच स्विच विफल',
   history: 'इतिहास',
   changes: 'बदलाव',

src/client/locales-id.ts

@@ -104,6 +104,7 @@ export const id: Record<string, string> = {
   commit: 'Commit',
   commitError: 'Commit gagal',
   branch: 'Branch',
+  worktree: 'Worktree',
   checkoutError: 'Beralih branch gagal',
   history: 'Riwayat',
   changes: 'Perubahan',

src/client/locales-it.ts

@@ -97,6 +97,7 @@ export const it: Record<string, string> = {
   commit: 'Commit',
   commitError: 'Commit non riuscito',
   branch: 'Ramo',
+  worktree: 'Albero di lavoro',
   checkoutError: 'Cambio di ramo non riuscito',
   history: 'Cronologia',
   changes: 'Modifiche',

src/client/locales-ko.ts

@@ -98,6 +98,7 @@ export const ko: Record<string, string> = {
   commit: '커밋',
   commitError: '커밋 실패',
   branch: '브랜치',
+  worktree: '워크트리',
   checkoutError: '브랜치 전환 실패',
   history: '기록',
   changes: '변경 사항',

src/client/locales-nl.ts

@@ -104,6 +104,7 @@ export const nl: Record<string, string> = {
   commit: 'Commit',
   commitError: 'Commit mislukt',
   branch: 'Branch',
+  worktree: 'Worktree',
   checkoutError: 'Wisselen van branch mislukt',
   history: 'Geschiedenis',
   changes: 'Wijzigingen',

src/client/locales-pl.ts

@@ -108,6 +108,7 @@ export const pl: Record<string, string> = {
   commit: 'Commit',
   commitError: 'Commit nie powiódł się',
   branch: 'Gałąź',
+  worktree: 'Drzewo robocze',
   checkoutError: 'Przełączenie gałęzi nie powiodło się',
   history: 'Historia',
   changes: 'Zmiany',

src/client/locales-pt.ts

@@ -89,6 +89,7 @@ export const pt: Record<string, string> = {
   commit: 'Commit',
   commitError: 'Falha no commit',
   branch: 'Branch',
+  worktree: 'Worktree',
   checkoutError: 'Falha ao alternar de branch',
   history: 'Histórico',
   changes: 'Alterações',

src/client/locales-ru.ts

@@ -102,6 +102,7 @@ export const ru: Record<string, string> = {
   commit: 'Закоммитить',
   commitError: 'Сбой коммита',
   branch: 'Ветка',
+  worktree: 'Рабочее дерево',
   checkoutError: 'Сбой переключения ветки',
   history: 'История',
   changes: 'Изменения',

src/client/locales-sv.ts

@@ -89,6 +89,7 @@ export const sv: Record<string, string> = {
   commit: 'Commit',
   commitError: 'Commit misslyckades',
   branch: 'Gren',
+  worktree: 'Arbetsträd',
   checkoutError: 'Grenbyte misslyckades',
   history: 'Historik',
   changes: 'Ändringar',

src/client/locales-th.ts

@@ -106,6 +106,7 @@ export const th: Record<string, string> = {
   commit: 'Commit',
   commitError: 'Commit ล้มเหลว',
   branch: 'Branch',
+  worktree: 'เวิร์กทรี',
   checkoutError: 'สลับ branch ล้มเหลว',
   history: 'ประวัติ',
   changes: 'การเปลี่ยนแปลง',

src/client/locales-tr.ts

@@ -106,6 +106,7 @@ export const tr: Record<string, string> = {
   commit: 'İşle',
   commitError: 'İşleme başarısız',
   branch: 'Dal',
+  worktree: 'Çalışma ağacı',
   checkoutError: 'Dal değiştirme başarısız',
   history: 'Geçmiş',
   changes: 'Değişiklikler',

src/client/locales-vi.ts

@@ -106,6 +106,7 @@ export const vi: Record<string, string> = {
   commit: 'Commit',
   commitError: 'Commit thất bại',
   branch: 'Branch',
+  worktree: 'Worktree',
   checkoutError: 'Chuyển branch thất bại',
   history: 'Lịch sử',
   changes: 'Thay đổi',

src/client/locales-zh-HK.ts

@@ -121,6 +121,7 @@ export const zhHK: Record<string, string> = {
   commit: '提交',
   commitError: '提交失敗',
   branch: '分支',
+  worktree: '工作樹',
   checkoutError: '切換分支失敗',
   history: '歷史',
   changes: '變更',

src/client/locales-zh-MO.ts

@@ -121,6 +121,7 @@ export const zhMO: Record<string, string> = {
   commit: '提交',
   commitError: '提交失敗',
   branch: '分支',
+  worktree: '工作樹',
   checkoutError: '切換分支失敗',
   history: '歷史',
   changes: '變更',

src/client/locales-zh-TW.ts

@@ -121,6 +121,7 @@ export const zhTW: Record<string, string> = {
   commit: '提交',
   commitError: '提交失敗',
   branch: '分支',
+  worktree: '工作樹',
   checkoutError: '切換分支失敗',
   history: '歷史',
   changes: '變更',

tests/locales.spec.ts

@@ -6,7 +6,7 @@
  * interpolation.
  */
 import { afterEach, describe, expect, it } from 'vitest'
-import { LOCALE_NS, attachBetterLocale, attachLocale, en, isZh, ja, relativeTime, t, zh } from '../src/client/locales.ts'
+import { LOCALE_NS, attachBetterLocale, attachLocale, en, isZh, ja, relativeTime, t, zh, de, fr, pt, ko, ar, hi, id as idDict, tr, vi, th, ru, it as itDict, nl, sv, pl, zhHK, zhTW, zhMO } from '../src/client/locales.ts'
 
 /** Minimal structural fake of the DSH LocaleService face the sidebar uses. */
 class FakeLocale {
@@ -111,6 +111,18 @@ describe('locales (DSH i18n following)', () => {
   it('keeps the ja dictionary key-set-equal to zh', () => {
     expect(Object.keys(ja).sort()).toEqual(Object.keys(zh).sort())
   })
+
+  it('keeps every shipped third-language dictionary key-set-equal to zh', () => {
+    // The third-language dicts are typed `Record<keyof typeof zh, string>` via
+    // an `as` cast (unchecked by tsc). This test catches missing/extra keys
+    // introduced when a zh key is added without updating every language.
+    const thirdLangs = {
+      de, fr, pt, ko, ar, hi, idDict, tr, vi, th, ru, itDict, nl, sv, pl, zhHK, zhTW, zhMO,
+    }
+    for (const [lang, dict] of Object.entries(thirdLangs)) {
+      expect(Object.keys(dict as Record<string, string>).sort(), lang).toEqual(Object.keys(zh).sort())
+    }
+  })
 })
 
 /** Minimal fake of the better-locale override store (the subset t()/isZh() read). */