feat(i18n): update chat localization strings to enhance user experience and clarity (#424)

src/i18n/locales/en/chat.json

@@ -3,11 +3,12 @@
     "gatewayRequired": "The OpenClaw Gateway needs to be running to use chat. It will start automatically, or you can start it from Settings.",
     "welcome": {
         "title": "ClawX Chat",
-        "subtitle": "Your AI assistant is ready. Start a conversation below.",
-        "askQuestions": "Ask Questions",
-        "askQuestionsDesc": "Get answers on any topic",
-        "creativeTasks": "Creative Tasks",
-        "creativeTasksDesc": "Writing, brainstorming, ideas"
+        "subtitle": "What can I do for you?",
+        "askQuestions": "Handle Tasks",
+        "askQuestionsDesc": "Work on task-oriented requests",
+        "creativeTasks": "Continuous Execution",
+        "creativeTasksDesc": "Keep running through multi-step work",
+        "brainstorming": "Multi-Agent Parallel"
     },
     "noLogs": "(No logs available yet)",
     "toolbar": {

src/i18n/locales/ja/chat.json

@@ -3,11 +3,12 @@
     "gatewayRequired": "チャットを使用するには OpenClaw ゲートウェイが実行されている必要があります。自動的に起動するか、設定から起動できます。",
     "welcome": {
         "title": "ClawX チャット",
-        "subtitle": "AI アシスタントの準備ができました。下の入力欄から会話を始めましょう。",
-        "askQuestions": "質問する",
-        "askQuestionsDesc": "あらゆるトピックについて回答を得る",
-        "creativeTasks": "クリエイティブタスク",
-        "creativeTasksDesc": "ライティング、ブレスト、アイデア"
+        "subtitle": "何をお手伝いできますか？",
+        "askQuestions": "タスク処理",
+        "askQuestionsDesc": "タスク指向の依頼に対応します",
+        "creativeTasks": "継続実行",
+        "creativeTasksDesc": "複数ステップの作業を継続して進めます",
+        "brainstorming": "マルチエージェント並列"
     },
     "noLogs": "（ログはまだありません）",
     "toolbar": {

src/i18n/locales/zh/chat.json

@@ -3,11 +3,12 @@
     "gatewayRequired": "OpenClaw 网关需要运行才能使用聊天。它将自动启动，或者您可以从设置中启动。",
     "welcome": {
         "title": "ClawX 聊天",
-        "subtitle": "您的 AI 助手已就绪。在下方开始对话。",
-        "askQuestions": "提问",
-        "askQuestionsDesc": "获取任何话题的答案",
-        "creativeTasks": "创意任务",
-        "creativeTasksDesc": "写作、头脑风暴、创意"
+        "subtitle": "我能为你做些什么？",
+        "askQuestions": "处理任务",
+        "askQuestionsDesc": "处理面向任务的请求",
+        "creativeTasks": "持续执行",
+        "creativeTasksDesc": "持续推进多步骤工作",
+        "brainstorming": "多智能体并行"
     },
     "noLogs": "（暂无日志）",
     "toolbar": {

src/pages/Chat/index.tsx

@@ -188,19 +188,23 @@ export function Chat() {
 // ── Welcome Screen ──────────────────────────────────────────────
 
 function WelcomeScreen() {
+  const { t } = useTranslation('chat');
+  const quickActions = [
+    { key: 'askQuestions', label: t('welcome.askQuestions') },
+    { key: 'creativeTasks', label: t('welcome.creativeTasks') },
+    { key: 'brainstorming', label: t('welcome.brainstorming') },
+  ];
+
   return (
     <div className="flex flex-col items-center justify-center text-center h-[60vh]">
-      <h1 className="text-6xl md:text-7xl font-serif text-foreground mb-3 font-normal tracking-tight" style={{ fontFamily: 'Georgia, Cambria, "Times New Roman", Times, serif' }}>
-        Welcome
+      <h1 className="text-4xl md:text-5xl font-serif text-foreground/80 mb-8 font-normal tracking-tight" style={{ fontFamily: 'Georgia, Cambria, "Times New Roman", Times, serif' }}>
+        {t('welcome.subtitle')}
       </h1>
-      <p className="text-[17px] text-foreground/80 mb-8 font-medium">
-        Your AI assistant is ready. Start a conversation below.
-      </p>
 
       <div className="flex flex-wrap items-center justify-center gap-2.5 max-w-lg w-full">
-        {['Ask Questions', 'Creative Tasks', 'Brainstorming'].map((label, i) => (
+        {quickActions.map(({ key, label }) => (
           <button 
-            key={i} 
+            key={key}
             className="px-4 py-1.5 rounded-full border border-black/10 dark:border-white/10 text-[13px] font-medium text-foreground/70 hover:bg-black/5 dark:hover:bg-white/5 transition-colors bg-black/[0.02]"
           >
             {label}