@@ -0,0 +1,10 @@
+---
+'@objectstack/service-messaging': patch
+---
+
+i18n(service-messaging): the notification objects and the digest heading ship in Traditional Chinese, Arabic, French and Brazilian Portuguese
+
+Clause-②: no
+Metadata-protocol: none
+
+The messaging objects (`sys_inbox_message`, `sys_notification_receipt`, `sys_notification_delivery`, `sys_notification_preference`, `sys_notification_template`, `sys_http_delivery`, `sys_user_device`) and the digest heading "You have {{count}} notifications" now carry `zh-Hant`, `ar`, `fr` and `pt-BR` beside the existing `en`, `zh-CN`, `ja-JP` and `es-ES`, so a recipient in one of those languages reads the notification screens and the digest heading in their own language instead of English. `t()` selects no plural form, so the Arabic heading is worded as a tally (`عدد الإشعارات لديك: {{count}}`), correct for every count. A recipient whose language is `fr-FR` now reads the `fr` pack. Each new locale is registered under its platform-table tag with its source-hash companion and its messages, and the package's extract command lists the tags, so the existing `check:i18n` bundle check covers them. First half of package 5 of #30512; `ru`, `de` and `ko` follow in the second half.
@@ -7,7 +7,7 @@
  * `--merge` preserves every hand-translated string.
  *
  *   os i18n extract packages/services/service-messaging/scripts/i18n-extract.config.ts \
- *     --locales=zh-CN,ja-JP,es-ES --fill=default --objects-only --no-metadata-forms \
+ *     --locales=zh-CN,ja-JP,es-ES,zh-Hant,ar,fr,pt-BR --fill=default --objects-only --no-metadata-forms \
  *     --source-hashes \
  *     --out=packages/services/service-messaging/src/translations
  *
@@ -49,6 +49,10 @@ import { enObjects } from '../src/translations/en.objects.generated.js';
 import { zhCNObjects } from '../src/translations/zh-CN.objects.generated.js';
 import { jaJPObjects } from '../src/translations/ja-JP.objects.generated.js';
 import { esESObjects } from '../src/translations/es-ES.objects.generated.js';
+import { zhHantObjects } from '../src/translations/zh-Hant.objects.generated.js';
+import { arObjects } from '../src/translations/ar.objects.generated.js';
+import { frObjects } from '../src/translations/fr.objects.generated.js';
+import { ptBRObjects } from '../src/translations/pt-BR.objects.generated.js';
 
 /**
  * The annotation is load-bearing, not decoration (#10868). `defineStack`
@@ -79,6 +83,10 @@ const config: ObjectStackDefinition = defineStack({
     { 'zh-CN': { objects: zhCNObjects } },
     { 'ja-JP': { objects: jaJPObjects } },
     { 'es-ES': { objects: esESObjects } },
+    { 'zh-Hant': { objects: zhHantObjects } },
+    { 'ar': { objects: arObjects } },
+    { 'fr': { objects: frObjects } },
+    { 'pt-BR': { objects: ptBRObjects } },
   ],
 });
 
 
@@ -86,7 +86,9 @@ const USERS = [
     { id: 'u_en', name: 'Ada', email: 'ada@example.com', phone_number: '+15550000001', locale: 'en' },
     { id: 'u_ja', name: 'Sato', email: 'sato@example.com', phone_number: '+81300000001', locale: 'ja-JP' },
     { id: 'u_none', name: 'Nobody', email: 'nobody@example.com', phone_number: '+15550000002' },
-    // A language no pack in this deployment holds.
+    // A language no pack in this deployment holds (Italian is not a platform-table language).
+    { id: 'u_it', name: 'Rossi', email: 'rossi@example.com', phone_number: '+390600000001', locale: 'it-IT' },
+    // A regional tag of a platform-table language: the messaging bundle ships `fr` (#30512).
     { id: 'u_fr', name: 'Dupont', email: 'dupont@example.com', phone_number: '+33100000001', locale: 'fr-FR' },
 ];
 
@@ -487,22 +489,34 @@ describe("#25015 — a digest's heading is rendered in its recipient's language"
             i18n: catalog({ messagingBundle: true, defaultLocale: 'zh-CN' }),
         });
 
-        const [digest] = await digestOf(ql, c, 'u_fr', 2);
+        const [digest] = await digestOf(ql, c, 'u_it', 2);
 
         expect(digest.title).toBe('您有 2 条通知');
     });
 
-    it('when neither the recipient\'s language nor the deployment default has a pack, the English literal — said once', async () => {
+    it('a regional recipient language reads its platform-table pack (`fr-FR` reads `fr`, #30512)', async () => {
         const ql = await boot();
         const c = compose(ql, {
-            outbox: 'memory', preferenceResolver: digestAll, deploymentDefault: 'fr-FR',
-            i18n: catalog({ messagingBundle: true, defaultLocale: 'fr-FR' }),
+            outbox: 'memory', preferenceResolver: digestAll, deploymentDefault: 'zh-CN',
+            i18n: catalog({ messagingBundle: true, defaultLocale: 'zh-CN' }),
         });
 
         const [digest] = await digestOf(ql, c, 'u_fr', 2);
 
+        expect(digest.title).toBe('Vous avez 2 notifications');
+    });
+
+    it('when neither the recipient\'s language nor the deployment default has a pack, the English literal — said once', async () => {
+        const ql = await boot();
+        const c = compose(ql, {
+            outbox: 'memory', preferenceResolver: digestAll, deploymentDefault: 'it-IT',
+            i18n: catalog({ messagingBundle: true, defaultLocale: 'it-IT' }),
+        });
+
+        const [digest] = await digestOf(ql, c, 'u_it', 2);
+
         expect(digest.title).toBe('You have 2 notifications');
-        expect(c.warnings.filter((w) => w.includes(`'${DIGEST_HEADING_KEY}'`) && w.includes('fr-FR'))).toHaveLength(1);
+        expect(c.warnings.filter((w) => w.includes(`'${DIGEST_HEADING_KEY}'`) && w.includes('it-IT'))).toHaveLength(1);
     });
 
     it("a one-item digest keeps its item's own title, rendered in the recipient's language", async () => {
 
@@ -26,6 +26,10 @@ import { enObjects } from '../translations/en.objects.generated.js';
 import { zhCNObjects } from '../translations/zh-CN.objects.generated.js';
 import { jaJPObjects } from '../translations/ja-JP.objects.generated.js';
 import { esESObjects } from '../translations/es-ES.objects.generated.js';
+import { zhHantObjects } from '../translations/zh-Hant.objects.generated.js';
+import { arObjects } from '../translations/ar.objects.generated.js';
+import { frObjects } from '../translations/fr.objects.generated.js';
+import { ptBRObjects } from '../translations/pt-BR.objects.generated.js';
 
 /** The design-record vocabulary an admin-facing string must not carry. */
 const DESIGN_RECORD_VOCABULARY: ReadonlyArray<readonly [string, RegExp]> = [
@@ -90,7 +94,16 @@ function isObjectSchema(v: unknown): v is ObjectLike {
     && !!(v as ObjectLike).fields && typeof (v as ObjectLike).fields === 'object';
 }
 
-const OBJECT_BUNDLES = { en: enObjects, 'zh-CN': zhCNObjects, 'ja-JP': jaJPObjects, 'es-ES': esESObjects } as const;
+const OBJECT_BUNDLES = {
+  en: enObjects,
+  'zh-CN': zhCNObjects,
+  'ja-JP': jaJPObjects,
+  'es-ES': esESObjects,
+  'zh-Hant': zhHantObjects,
+  'ar': arObjects,
+  'fr': frObjects,
+  'pt-BR': ptBRObjects,
+} as const;
 
 describe('messaging objects: admin-facing copy carries no design-record vocabulary', () => {
   it('the matcher recognises each kind of vocabulary it exists to keep out', () => {
 
@@ -28,6 +28,10 @@ import { enObjects } from '../translations/en.objects.generated.js';
 import { zhCNObjects } from '../translations/zh-CN.objects.generated.js';
 import { jaJPObjects } from '../translations/ja-JP.objects.generated.js';
 import { esESObjects } from '../translations/es-ES.objects.generated.js';
+import { zhHantObjects } from '../translations/zh-Hant.objects.generated.js';
+import { arObjects } from '../translations/ar.objects.generated.js';
+import { frObjects } from '../translations/fr.objects.generated.js';
+import { ptBRObjects } from '../translations/pt-BR.objects.generated.js';
 
 interface ViewLike {
   columns?: unknown;
@@ -45,7 +49,16 @@ interface ObjectLike {
 
 const OBJECTS = [NotificationPreference, NotificationTemplate] as unknown as ObjectLike[];
 
-const BUNDLES = { en: enObjects, 'zh-CN': zhCNObjects, 'ja-JP': jaJPObjects, 'es-ES': esESObjects } as const;
+const BUNDLES = {
+  en: enObjects,
+  'zh-CN': zhCNObjects,
+  'ja-JP': jaJPObjects,
+  'es-ES': esESObjects,
+  'zh-Hant': zhHantObjects,
+  'ar': arObjects,
+  'fr': frObjects,
+  'pt-BR': ptBRObjects,
+} as const;
 
 function views(def: ObjectLike): Array<[string, ViewLike]> {
   return Object.entries(def.listViews ?? {});