feat: Add Catalan language option (#12454)

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

shared/i18n/index.ts

@@ -8,6 +8,10 @@ type LanguageOption = {
 // Note: Updating the available languages? Make sure to also update the
 // locales array in shared/utils/date.ts to enable translation for timestamps.
 export const languageOptions: LanguageOption[] = [
+  {
+    label: "Català (Catalan)",
+    value: "ca_ES",
+  },
   {
     label: "简体中文 (Chinese, Simplified)",
     value: "zh_CN",

shared/utils/date.ts

@@ -11,6 +11,7 @@ import {
   parse,
 } from "date-fns";
 import {
+  ca,
   cs,
   de,
   enGB,
@@ -259,6 +260,7 @@ export function getCurrentDateTimeAsString(locale?: Intl.LocalesArgument) {
 }
 
 const locales = {
+  ca_ES: ca,
   cs_CZ: cs,
   de_DE: de,
   en_GB: enGB,