style(assistant): compact model picker in header

web/src/app/home/components/WorkspaceAssistant.tsx

@@ -205,14 +205,44 @@ function AssistantPanel({ storageKey }: { storageKey: string }) {
           <header className="flex items-center gap-2 border-b p-3">
             <MessageCircle className="size-5 text-primary" />
             <div className="min-w-0 flex-1">
-              <h2 className="font-semibold">{t('assistant.title')}</h2>
+              <h2 className="truncate font-semibold">{t('assistant.title')}</h2>
               <p className="truncate text-xs text-muted-foreground">
                 {t('assistant.subtitle')}
               </p>
             </div>
+            {open && (
+              <div
+                className="w-28 min-w-0 shrink-0"
+                title={t('assistant.modelHint')}
+              >
+                <DynamicFormItemComponent
+                  config={{
+                    id: 'assistant-model',
+                    name: 'assistant-model',
+                    type: DynamicFormItemType.LLM_MODEL_SELECTOR,
+                    default: '',
+                    required: false,
+                    label: { en_US: 'Assistant model', zh_Hans: '助手模型' },
+                  }}
+                  field={{
+                    name: 'assistant-model',
+                    value: modelUuid,
+                    onChange: setModelUuid,
+                    onBlur: () => {},
+                    ref: () => {},
+                    disabled:
+                      busy ||
+                      (!!conversation && conversation.status !== 'ready'),
+                  }}
+                  requiredModelAbility="func_call"
+                  compactModelSelector
+                />
+              </div>
+            )}
             <Button
               variant="ghost"
               size="icon"
+              className="size-7 shrink-0"
               disabled={busy}
               onClick={reset}
               aria-label={t('assistant.newChat')}
@@ -222,39 +252,13 @@ function AssistantPanel({ storageKey }: { storageKey: string }) {
             <Button
               variant="ghost"
               size="icon"
+              className="size-7 shrink-0"
               onClick={() => setOpen(false)}
               aria-label={t('assistant.close')}
             >
               <X />
             </Button>
           </header>
-          {open && (
-            <div className="space-y-1 border-b px-3 py-2">
-              <span className="text-xs text-muted-foreground">
-                {t('assistant.modelHint')}
-              </span>
-              <DynamicFormItemComponent
-                config={{
-                  id: 'assistant-model',
-                  name: 'assistant-model',
-                  type: DynamicFormItemType.LLM_MODEL_SELECTOR,
-                  default: '',
-                  required: false,
-                  label: { en_US: 'Assistant model', zh_Hans: '助手模型' },
-                }}
-                field={{
-                  name: 'assistant-model',
-                  value: modelUuid,
-                  onChange: setModelUuid,
-                  onBlur: () => {},
-                  ref: () => {},
-                  disabled:
-                    busy || (!!conversation && conversation.status !== 'ready'),
-                }}
-                requiredModelAbility="func_call"
-              />
-            </div>
-          )}
           <div
             className="flex-1 space-y-3 overflow-y-auto p-4"
             aria-live="polite"

web/src/app/home/components/dynamic-form/DynamicFormItemComponent.tsx

@@ -89,6 +89,7 @@ export default function DynamicFormItemComponent({
   setFormValue,
   systemContext,
   requiredModelAbility,
+  compactModelSelector = false,
 }: {
   config: IDynamicFormItemSchema;
   field: ControllerRenderProps<any, any>;
@@ -97,6 +98,7 @@ export default function DynamicFormItemComponent({
   setFormValue?: (name: string, value: unknown) => void;
   systemContext?: Record<string, unknown>;
   requiredModelAbility?: string;
+  compactModelSelector?: boolean;
 }) {
   const [llmModels, setLlmModels] = useState<LLMModel[]>([]);
   const [embeddingModels, setEmbeddingModels] = useState<EmbeddingModel[]>([]);
@@ -468,7 +470,14 @@ export default function DynamicFormItemComponent({
               onValueChange={field.onChange}
               disabled={field.disabled}
             >
-              <SelectTrigger className="min-w-0 bg-[#ffffff] dark:bg-[#2a2a2e]">
+              <SelectTrigger
+                aria-label={t('models.selectModel')}
+                className={
+                  compactModelSelector
+                    ? 'w-full min-w-0 gap-1 border-0 bg-transparent px-1 text-xs text-muted-foreground shadow-none hover:bg-muted data-[size=default]:h-7 [&_[data-slot=select-value]_svg]:hidden'
+                    : 'min-w-0 bg-[#ffffff] dark:bg-[#2a2a2e]'
+                }
+              >
                 <SelectValue placeholder={t('models.selectModel')} />
               </SelectTrigger>
               <SelectContent>
@@ -605,7 +614,7 @@ export default function DynamicFormItemComponent({
                 type="button"
                 variant="ghost"
                 size="icon"
-                className="h-9 w-9 shrink-0"
+                className={compactModelSelector ? 'hidden' : 'h-9 w-9 shrink-0'}
                 onClick={() => {
                   setSettingsSection('models');
                   setModelsDialogOpen(true);

web/src/i18n/locales/en-US.ts

@@ -1,7 +1,6 @@
 const enUS = {
   assistant: {
-    modelHint:
-      'Assistant model · Space recommendation by default; changes apply to your next message',
+    modelHint: 'Switch assistant model for your next message',
     details: 'View raw data',
     found: 'Found {{count}} items',
     completed: 'Completed',
@@ -29,8 +28,8 @@ const enUS = {
       knowledge_bases: 'Find knowledge bases',
       knowledge_engines: 'Find knowledge engines',
     },
-    title: 'Workspace assistant · Experimental',
-    subtitle: 'Build with your Space model',
+    title: 'Workspace assistant',
+    subtitle: 'Build and manage your apps',
     newChat: 'New conversation',
     close: 'Close',
     welcome:
@@ -43,7 +42,7 @@ const enUS = {
     decline: 'Decline',
     working: 'Working…',
     modelUnavailable:
-      'The Space model is unavailable. Check your Space account and model access in Settings, then start a new conversation.',
+      'Model unavailable. Check its configuration and access, then start a new conversation.',
     error:
       'This turn did not complete. Check the resource results before starting a new conversation; changes are not retried automatically.',
     running:

web/src/i18n/locales/ja-JP.ts

@@ -1,7 +1,6 @@
 const jaJP = {
   assistant: {
-    modelHint:
-      'アシスタントモデル · 既定は Space 推奨。変更は次のメッセージから適用',
+    modelHint: '次のメッセージからモデルを切り替え',
     details: '元のデータを見る',
     found: '{{count}} 件見つかりました',
     completed: '完了',
@@ -29,8 +28,8 @@ const jaJP = {
       knowledge_bases: 'ナレッジベース検索',
       knowledge_engines: 'エンジン検索',
     },
-    title: 'ワークスペースアシスタント · 実験版',
-    subtitle: 'Space モデルでアプリを構築',
+    title: 'ワークスペースアシスタント',
+    subtitle: 'アプリを構築・管理',
     newChat: '新しい会話',
     close: '閉じる',
     welcome:
@@ -43,7 +42,7 @@ const jaJP = {
     decline: '拒否',
     working: '処理中…',
     modelUnavailable:
-      'Space モデルを利用できません。設定でログインとモデルの権限を確認して、新しい会話を開始してください。',
+      'モデルを利用できません。設定と権限を確認して、新しい会話を開始してください。',
     error:
       '処理が完了しませんでした。新しい会話の前にリソースを確認してください。変更は自動で再試行されません。',
     running:

web/src/i18n/locales/zh-Hans.ts

@@ -1,6 +1,6 @@
 const zhHans = {
   assistant: {
-    modelHint: '助手模型 · 默认使用 Space 推荐模型，切换从下一条消息生效',
+    modelHint: '切换助手模型，从下一条消息生效',
     details: '查看原始数据',
     found: '找到 {{count}} 项',
     completed: '已完成',
@@ -26,8 +26,8 @@ const zhHans = {
       knowledge_bases: '查询知识库',
       knowledge_engines: '查询知识引擎',
     },
-    title: '工作区助手 · 实验版',
-    subtitle: '使用 Space 模型构建应用',
+    title: '工作区助手',
+    subtitle: '构建和管理你的应用',
     newChat: '新对话',
     close: '关闭',
     welcome:
@@ -40,7 +40,7 @@ const zhHans = {
     decline: '拒绝',
     working: '正在处理…',
     modelUnavailable:
-      'Space 模型暂不可用。请在设置中检查 Space 登录和模型权限，然后开启新对话。',
+      '模型暂不可用。请检查模型配置和访问权限，然后开启新对话。',
     error:
       '本轮未完成。请先检查资源和操作结果，再开启新对话；系统不会自动重试变更。',
     running: