fix(settings): map unknown UI locales to en-US for commit prompts

Portuguese and other interface languages have no commit prompt catalog; sending pt-BR made settings fail to deserialize.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/desktop/src/features/settings/CommitSettingsCard.tsx

@@ -1,5 +1,6 @@
 import { useCallback, useEffect, useMemo, useState } from "react";
 import { api, pluginText, type CommitSettingsView } from "../../shared/api";
+import { commitPromptLocale } from "../../i18n/runtime";
 import { useI18n } from "../../i18n/store";
 import { useAppStore } from "../../shared/store/appStore";
 import { Button } from "../../shared/ui/Button";
@@ -33,11 +34,12 @@ export function CommitSettingsCard() {
     void (async () => {
       try {
         let loaded = await api.commitSettings(locale);
-        if (!loaded.prompt.trim() && loaded.prompt_locale !== locale) {
+        const promptLocale = commitPromptLocale(locale);
+        if (!loaded.prompt.trim() && loaded.prompt_locale !== promptLocale) {
           loaded = await api.setCommitSettings({
             model_id: loaded.model_id,
             prompt: "",
-            prompt_locale: locale,
+            prompt_locale: promptLocale,
           });
         }
         if (active) {
@@ -97,7 +99,7 @@ export function CommitSettingsCard() {
       return api.setCommitSettings({
         model_id: modelId,
         prompt: normalizedPrompt,
-        prompt_locale: locale,
+        prompt_locale: commitPromptLocale(locale),
       });
     },
     [view, locale],

apps/desktop/src/i18n/runtime.ts

@@ -3,6 +3,12 @@ import enUS from "./locales/en-US.json";
 import ptBR from "./locales/pt-BR.json";
 
 export type Locale = "zh-CN" | "en-US" | "pt-BR";
+export type CommitPromptLocale = "zh-CN" | "en-US";
+
+export function commitPromptLocale(locale: Locale): CommitPromptLocale {
+  return locale === "zh-CN" ? "zh-CN" : "en-US";
+}
+
 export type TranslationValue = string | number;
 export type TranslationParams = Readonly<Record<string, TranslationValue>>;
 

apps/desktop/src/shared/api.ts

@@ -1,5 +1,5 @@
 import type { AdRuntime } from "../shell/ads/types";
-import type { Locale } from "../i18n/runtime";
+import type { CommitPromptLocale, Locale } from "../i18n/runtime";
 
 export type ModelType = "openai" | "anthropic";
 
@@ -154,7 +154,7 @@ export interface DesktopSettings {
 export interface CommitSettings {
   model_id: string;
   prompt: string;
-  prompt_locale: Locale;
+  prompt_locale: CommitPromptLocale;
 }
 
 export interface CommitSettingsView extends CommitSettings {