fix(i18n): /config no longer closes after applying, shows status message

- After selecting a locale, ConfigDropdown returns to category selection
  instead of closing (onClose was called immediately)
- Shows status message in footer (e.g. 'Language: English')
  via onStatusMessage prop wired to PromptInput's setStatusMessage
- Added 3 translation keys: languageUpdated, thinkingLanguageUpdated,
  replyLanguageUpdated (243 total)
- WelcomeScreen tips already fully translated, no changes needed

Author: xinggitxing

locales/en/ui-config.json

@@ -11,7 +11,10 @@
       "currentLabel": "current",
       "localeEn": "English",
       "localeZhCN": "\u4e2d\u6587",
-      "categoryWithValue": "{label} ({value})"
+      "categoryWithValue": "{label} ({value})",
+      "languageUpdated": "Language: {locale}",
+      "thinkingLanguageUpdated": "Thinking language: {locale}",
+      "replyLanguageUpdated": "Reply language: {locale}"
     }
   }
 }

locales/zh-CN/ui-config.json

@@ -11,7 +11,10 @@
       "currentLabel": "当前",
       "localeEn": "English",
       "localeZhCN": "中文",
-      "categoryWithValue": "{label}（{value}）"
+      "categoryWithValue": "{label}（{value}）",
+      "languageUpdated": "语言：{locale}",
+      "thinkingLanguageUpdated": "推理语言：{locale}",
+      "replyLanguageUpdated": "回复语言：{locale}"
     }
   }
 }

src/ui/PromptInput.tsx

@@ -939,6 +939,7 @@ export const PromptInput = React.memo(function PromptInput({
         onLocaleChange={(locale) => onLocaleChange?.(locale)}
         onThinkingLocaleChange={(locale) => onThinkingLocaleChange?.(locale)}
         onReplyLocaleChange={(locale) => onReplyLocaleChange?.(locale)}
+        onStatusMessage={setStatusMessage}
       />
       <SlashCommandMenu width={screenWidth} items={slashMenu} activeIndex={menuIndex} />
       {!showFooterText && (

src/ui/components/ConfigDropdown/index.tsx

@@ -51,6 +51,7 @@ type Props = {
   onLocaleChange: (locale: Locale) => void;
   onThinkingLocaleChange: (locale: Locale) => void;
   onReplyLocaleChange: (locale: Locale) => void;
+  onStatusMessage?: (message: string | null) => void;
 };
 
 const ConfigDropdown: React.FC<Props> = ({
@@ -63,6 +64,7 @@ const ConfigDropdown: React.FC<Props> = ({
   onLocaleChange,
   onThinkingLocaleChange,
   onReplyLocaleChange,
+  onStatusMessage,
 }) => {
   const [step, setStep] = useState<ConfigStep | null>(null);
   const [activeIndex, setActiveIndex] = useState(0);
@@ -108,18 +110,25 @@ const ConfigDropdown: React.FC<Props> = ({
       return;
     }
 
+    const localeDisplay = getLocaleDisplayName(locale.key);
     switch (selectedCategory) {
       case "locale":
         onLocaleChange(locale.key);
+        onStatusMessage?.(t("ui.config.languageUpdated", { locale: localeDisplay }));
         break;
       case "thinkingLocale":
         onThinkingLocaleChange(locale.key);
+        onStatusMessage?.(t("ui.config.thinkingLanguageUpdated", { locale: localeDisplay }));
         break;
       case "replyLocale":
         onReplyLocaleChange(locale.key);
+        onStatusMessage?.(t("ui.config.replyLanguageUpdated", { locale: localeDisplay }));
         break;
     }
-    onClose();
+    // Return to category selection after applying
+    setStep("category");
+    setActiveIndex(0);
+    setSelectedCategory(null);
   }
 
   useInput(