feat(chat): allow prompting subagent sessions

packages/ui/src/components/chat/ChatContainer.tsx

@@ -404,6 +404,7 @@ export const ChatContainer: React.FC<ChatContainerProps> = ({ autoOpenDraft = tr
     // UI store
     const isExpandedInput = useUIStore((state) => state.isExpandedInput);
     const stickyUserHeader = useUIStore((state) => state.stickyUserHeader);
+    const allowPromptingSubagentSessions = useUIStore((state) => state.allowPromptingSubagentSessions);
     const isTimelineDialogOpen = useUIStore((s) => s.isTimelineDialogOpen);
     const setTimelineDialogOpen = useUIStore((s) => s.setTimelineDialogOpen);
 
@@ -585,7 +586,7 @@ export const ChatContainer: React.FC<ChatContainerProps> = ({ autoOpenDraft = tr
             {t('chat.container.returnToParent.label')}
         </Button>
     ) : null;
-    const promptReadOnly = readOnly || Boolean(parentSession);
+    const promptReadOnly = readOnly || (Boolean(parentSession) && !allowPromptingSubagentSessions);
 
     React.useEffect(() => {
         if (autoOpenDraft && !currentSessionId && !draftOpen) {
@@ -839,7 +840,7 @@ export const ChatContainer: React.FC<ChatContainerProps> = ({ autoOpenDraft = tr
 								: 'flex-1 items-center justify-center bg-background px-0 pb-[6vh]'
 					)}
 				>
-						{promptReadOnly ? <ReadOnlyPromptBanner /> : <ChatInput scrollToBottom={scrollToBottomOnSend} />}
+                        {promptReadOnly ? <ReadOnlyPromptBanner /> : <ChatInput scrollToBottom={scrollToBottomOnSend} />}
 				</div>
 			</div>
         );
@@ -899,7 +900,7 @@ export const ChatContainer: React.FC<ChatContainerProps> = ({ autoOpenDraft = tr
 							: 'bg-background'
 					)}
 				>
-					{promptReadOnly ? <ReadOnlyPromptBanner /> : <ChatInput scrollToBottom={scrollToBottomOnSend} />}
+                    {promptReadOnly ? <ReadOnlyPromptBanner /> : <ChatInput scrollToBottom={scrollToBottomOnSend} />}
 				</div>
             </div>
         );
@@ -934,7 +935,7 @@ export const ChatContainer: React.FC<ChatContainerProps> = ({ autoOpenDraft = tr
 							: 'bg-background'
 					)}
 				>
-					{promptReadOnly ? <ReadOnlyPromptBanner /> : <ChatInput scrollToBottom={scrollToBottomOnSend} />}
+                    {promptReadOnly ? <ReadOnlyPromptBanner /> : <ChatInput scrollToBottom={scrollToBottomOnSend} />}
 				</div>
             </div>
         );

packages/ui/src/components/chat/message/MessageBody.tsx

@@ -436,9 +436,10 @@ const writeRevealedToolIds = (messageId: string, value: Set<string>): void => {
     revealedToolIdsByMessage.set(messageId, new Set(value));
 };
 
-const UserMessageBody = React.memo(({ messageId, parts, isMobile, alwaysShowActions = isMobile, hasTouchInput, hasTextContent, onCopyMessage, copiedMessage, onShowPopup, agentMention, onRevert, onFork, userActionsMode = 'inline', stickyUserHeaderEnabled = true }: {
+const UserMessageBody = React.memo(({ messageId, parts, messageCreatedAt, isMobile, alwaysShowActions = isMobile, hasTouchInput, hasTextContent, onCopyMessage, copiedMessage, onShowPopup, agentMention, onRevert, onFork, userActionsMode = 'inline', stickyUserHeaderEnabled = true }: {
     messageId: string;
     parts: Part[];
+    messageCreatedAt?: number | null;
     isMobile: boolean;
     alwaysShowActions?: boolean;
     hasTouchInput?: boolean;
@@ -452,8 +453,9 @@ const UserMessageBody = React.memo(({ messageId, parts, isMobile, alwaysShowActi
     userActionsMode?: 'inline' | 'external-content' | 'external-actions';
     stickyUserHeaderEnabled?: boolean;
 }) => {
-    const { t } = useI18n();
+    const { locale, t } = useI18n();
     const chatSurfaceMode = useChatSurfaceMode();
+    const timeFormatPreference = useUIStore((state) => state.timeFormatPreference);
     const [copyHintVisible, setCopyHintVisible] = React.useState(false);
     const copyHintTimeoutRef = React.useRef<number | null>(null);
 
@@ -528,6 +530,12 @@ const UserMessageBody = React.memo(({ messageId, parts, isMobile, alwaysShowActi
     );
 
     const effectiveOnFork = chatSurfaceMode === 'mini-chat' ? undefined : onFork;
+    const timestamp = React.useMemo(() => {
+        void locale;
+        if (typeof messageCreatedAt !== 'number' || messageCreatedAt <= 0) return null;
+        const formatted = formatTimestampForDisplay(messageCreatedAt, timeFormatPreference);
+        return formatted.length > 0 ? formatted : null;
+    }, [locale, messageCreatedAt, timeFormatPreference]);
     const actionsBlock = ((canCopyMessage && hasCopyableText) || onRevert || effectiveOnFork) && showUserActions ? (
         <div className={cn(
             'group/user-actions',
@@ -556,6 +564,20 @@ const UserMessageBody = React.memo(({ messageId, parts, isMobile, alwaysShowActi
                         : 'pointer-events-none opacity-0 transition-opacity duration-150 group-hover/message:pointer-events-auto group-hover/message:opacity-100 group-hover/user-actions:pointer-events-auto group-hover/user-actions:opacity-100 group-hover/user-shell:pointer-events-auto group-hover/user-shell:opacity-100'
                 )}
             >
+                {timestamp ? (
+                    <Tooltip>
+                        <TooltipTrigger asChild>
+                            <span
+                                className="mr-1 flex items-center gap-1 text-sm tabular-nums text-muted-foreground/60"
+                                aria-label={`Message time: ${timestamp}`}
+                            >
+                                <Icon name="time" className="h-3.5 w-3.5" />
+                                <span className="message-footer__label">{timestamp}</span>
+                            </span>
+                        </TooltipTrigger>
+                        <TooltipContent>{timestamp}</TooltipContent>
+                    </Tooltip>
+                ) : null}
                 {onRevert && (
                 <Tooltip>
                     <TooltipTrigger asChild>
@@ -2125,6 +2147,7 @@ const MessageBody = React.memo(({ isUser, ...props }: MessageBodyProps) => {
             <UserMessageBody
                 messageId={props.messageId}
                 parts={props.parts}
+                messageCreatedAt={props.messageCreatedAt}
                 isMobile={props.isMobile}
                 alwaysShowActions={props.alwaysShowActions}
                 hasTouchInput={props.hasTouchInput}

packages/ui/src/components/sections/openchamber/OpenChamberPage.tsx

@@ -145,7 +145,7 @@ const VisualSectionContent: React.FC = () => {
 
 // Chat section: User message rendering, Diff layout, Mobile status bar, Show reasoning traces, Follow-up behavior, Persist draft
 const ChatSectionContent: React.FC = () => {
-    return <OpenChamberVisualSettings visibleSettings={['sessionGoal', 'sessionAssist', 'chatRenderMode', 'messageTransport', 'activityRenderMode', 'userMessageRendering', 'mermaidRendering', 'reasoning', 'showToolFileIcons', 'showTurnChangedFiles', 'expandedTools', 'collapsibleUserMessages', 'stickyUserHeader', 'wideChatLayout', 'codeBlockLineWrap', 'splitAssistantMessageActions', 'diffLayout', 'dotfiles', 'fileViewerPreview', 'followUpBehavior', 'persistDraft', 'inputSpellcheck']} />;
+    return <OpenChamberVisualSettings visibleSettings={['sessionGoal', 'sessionAssist', 'chatRenderMode', 'messageTransport', 'activityRenderMode', 'userMessageRendering', 'mermaidRendering', 'reasoning', 'showToolFileIcons', 'showTurnChangedFiles', 'expandedTools', 'collapsibleUserMessages', 'stickyUserHeader', 'wideChatLayout', 'codeBlockLineWrap', 'splitAssistantMessageActions', 'subagentReadOnlyBanner', 'diffLayout', 'dotfiles', 'fileViewerPreview', 'followUpBehavior', 'persistDraft', 'inputSpellcheck']} />;
 };
 
 // Sessions section: Default model & agent, Session retention

packages/ui/src/components/sections/openchamber/OpenChamberVisualSettings.tsx

@@ -245,7 +245,7 @@ const normalizeUserMessageRenderingMode = (mode: unknown): 'markdown' | 'plain'
     return mode === 'markdown' ? 'markdown' : 'plain';
 };
 
-type VisibleSetting = 'sessionAssist' | 'sessionGoal' | 'theme' | 'pwaInstallName' | 'pwaOrientation' | 'mobileKeyboardMode' | 'timeFormat' | 'weekStart' | 'fontSize' | 'terminalFontSize' | 'editorFontSize' | 'spacing' | 'inputBarOffset' | 'mermaidRendering' | 'userMessageRendering' | 'chatRenderMode' | 'messageTransport' | 'activityRenderMode' | 'collapsibleUserMessages' | 'stickyUserHeader' | 'wideChatLayout' | 'codeBlockLineWrap' | 'splitAssistantMessageActions' | 'diffLayout' | 'mobileStatusBar' | 'dotfiles' | 'fileViewerPreview' | 'reasoning' | 'showToolFileIcons' | 'showTurnChangedFiles' | 'expandedTools' | 'followUpBehavior' | 'terminalQuickKeys' | 'fileEditorKeymap' | 'persistDraft' | 'inputSpellcheck' | 'reportUsage' | 'expandedEditorToolbar';
+type VisibleSetting = 'sessionAssist' | 'sessionGoal' | 'theme' | 'pwaInstallName' | 'pwaOrientation' | 'mobileKeyboardMode' | 'timeFormat' | 'weekStart' | 'fontSize' | 'terminalFontSize' | 'editorFontSize' | 'spacing' | 'inputBarOffset' | 'mermaidRendering' | 'userMessageRendering' | 'chatRenderMode' | 'messageTransport' | 'activityRenderMode' | 'collapsibleUserMessages' | 'stickyUserHeader' | 'wideChatLayout' | 'codeBlockLineWrap' | 'splitAssistantMessageActions' | 'subagentReadOnlyBanner' | 'diffLayout' | 'mobileStatusBar' | 'dotfiles' | 'fileViewerPreview' | 'reasoning' | 'showToolFileIcons' | 'showTurnChangedFiles' | 'expandedTools' | 'followUpBehavior' | 'terminalQuickKeys' | 'fileEditorKeymap' | 'persistDraft' | 'inputSpellcheck' | 'reportUsage' | 'expandedEditorToolbar';
 
 interface OpenChamberVisualSettingsProps {
     /** Which settings to show. If undefined, shows all. */
@@ -333,6 +333,8 @@ export const OpenChamberVisualSettings: React.FC<OpenChamberVisualSettingsProps>
     const setWeekStartPreference = useUIStore(state => state.setWeekStartPreference);
     const showSplitAssistantMessageActions = useUIStore(state => state.showSplitAssistantMessageActions);
     const setShowSplitAssistantMessageActions = useUIStore(state => state.setShowSplitAssistantMessageActions);
+    const allowPromptingSubagentSessions = useUIStore(state => state.allowPromptingSubagentSessions);
+    const setAllowPromptingSubagentSessions = useUIStore(state => state.setAllowPromptingSubagentSessions);
     const messageStreamTransport = useConfigStore((state) => state.settingsMessageStreamTransport);
     const setMessageStreamTransport = useConfigStore((state) => state.setSettingsMessageStreamTransport);
     const effectiveMessageStreamTransport = messageStreamTransport;
@@ -1894,7 +1896,7 @@ export const OpenChamberVisualSettings: React.FC<OpenChamberVisualSettingsProps>
                                 </div>
                             )}
 
-                            {(shouldShow('sessionAssist') || shouldShow('collapsibleUserMessages') || shouldShow('stickyUserHeader') || shouldShow('wideChatLayout') || shouldShow('codeBlockLineWrap') || shouldShow('splitAssistantMessageActions') || shouldShow('dotfiles') || shouldShow('fileViewerPreview') || shouldShow('persistDraft') || shouldShow('showToolFileIcons') || shouldShow('showTurnChangedFiles') || (!isMobile && shouldShow('inputSpellcheck')) || shouldShow('reasoning')) && (
+                            {(shouldShow('sessionAssist') || shouldShow('collapsibleUserMessages') || shouldShow('stickyUserHeader') || shouldShow('wideChatLayout') || shouldShow('codeBlockLineWrap') || shouldShow('splitAssistantMessageActions') || shouldShow('subagentReadOnlyBanner') || shouldShow('dotfiles') || shouldShow('fileViewerPreview') || shouldShow('persistDraft') || shouldShow('showToolFileIcons') || shouldShow('showTurnChangedFiles') || (!isMobile && shouldShow('inputSpellcheck')) || shouldShow('reasoning')) && (
                                 <section className="p-2 space-y-0.5">
                                     {shouldShow('sessionAssist') && (
                                         <>
@@ -2095,6 +2097,30 @@ export const OpenChamberVisualSettings: React.FC<OpenChamberVisualSettingsProps>
                                         </div>
                                     )}
 
+                                    {shouldShow('subagentReadOnlyBanner') && (
+                                        <div
+                                            data-settings-item="chat.subagent-read-only-banner"
+                                            className="group flex cursor-pointer items-center gap-2 py-0.5"
+                                            role="button"
+                                            tabIndex={0}
+                                            aria-pressed={allowPromptingSubagentSessions}
+                                            onClick={() => setAllowPromptingSubagentSessions(!allowPromptingSubagentSessions)}
+                                            onKeyDown={(event) => {
+                                                if (event.key === ' ' || event.key === 'Enter') {
+                                                    event.preventDefault();
+                                                    setAllowPromptingSubagentSessions(!allowPromptingSubagentSessions);
+                                                }
+                                            }}
+                                        >
+                                            <Checkbox
+                                                checked={allowPromptingSubagentSessions}
+                                                onChange={setAllowPromptingSubagentSessions}
+                                                ariaLabel={t('settings.openchamber.visual.field.allowPromptingSubagentSessionsAria')}
+                                            />
+                                            <span className="typography-ui-label text-foreground">{t('settings.openchamber.visual.field.allowPromptingSubagentSessions')}</span>
+                                        </div>
+                                    )}
+
                                     {shouldShow('codeBlockLineWrap') && (
                                         <div
                                             data-settings-item="chat.code-block-line-wrap"

packages/ui/src/lib/i18n/messages/en.settings.ts

@@ -1801,6 +1801,8 @@ export const settingsDict = {
   'settings.openchamber.visual.field.showSplitAssistantMessageActionsAria': 'Inline assistant actions',
   'settings.openchamber.visual.field.showSplitAssistantMessageActions': 'Inline Assistant Actions',
   'settings.openchamber.visual.field.showSplitAssistantMessageActionsTooltip': 'Show Copy Answer, Save as image, and Read aloud on assistant text blocks that appear before later tool calls in the same response.',
+  'settings.openchamber.visual.field.allowPromptingSubagentSessionsAria': 'Allow prompting subagent sessions',
+  'settings.openchamber.visual.field.allowPromptingSubagentSessions': 'Allow Prompting Subagent Sessions',
   'settings.openchamber.visual.field.showToolFileIconsAria': 'Show tool file icons',
   'settings.openchamber.visual.field.showToolFileIcons': 'Show Tool File Icons',
   'settings.openchamber.visual.field.showTurnChangedFilesAria': 'Show changed files for completed turns',

packages/ui/src/lib/i18n/messages/es.settings.ts

@@ -1766,6 +1766,8 @@ export const settingsDict = {
   "settings.openchamber.visual.field.showSplitAssistantMessageActionsAria": "Acciones en línea del asistente",
   "settings.openchamber.visual.field.showSplitAssistantMessageActions": "Acciones en línea del asistente",
   "settings.openchamber.visual.field.showSplitAssistantMessageActionsTooltip": "Muestra Copiar respuesta, Guardar como imagen y Leer en voz alta en bloques de texto del asistente que aparecen antes de llamadas a herramientas posteriores dentro de la misma respuesta.",
+  "settings.openchamber.visual.field.allowPromptingSubagentSessionsAria": "Permitir enviar solicitudes a sesiones de subagentes",
+  "settings.openchamber.visual.field.allowPromptingSubagentSessions": "Permitir solicitudes en sesiones de subagentes",
   "settings.openchamber.visual.field.showToolFileIconsAria": "Mostrar iconos de archivos de herramientas",
   "settings.openchamber.visual.field.codeBlockLineWrapAria": "Ajustar líneas de bloques de código",
   "settings.openchamber.visual.field.codeBlockLineWrap": "Ajustar líneas de bloques de código",

packages/ui/src/lib/i18n/messages/fr.settings.ts

@@ -1675,6 +1675,8 @@ export const settingsDict = {
   'settings.openchamber.visual.field.showSplitAssistantMessageActionsAria': 'Actions intégrées de l\'assistant',
   'settings.openchamber.visual.field.showSplitAssistantMessageActions': 'Actions intégrées de l\'assistant',
   'settings.openchamber.visual.field.showSplitAssistantMessageActionsTooltip': 'Afficher Copier la réponse, Enregistrer en image et Lire à haute voix sur les blocs de texte de l\'assistant qui apparaissent avant les appels d\'outil suivants dans la même réponse.',
+  'settings.openchamber.visual.field.allowPromptingSubagentSessionsAria': 'Autoriser les requêtes dans les sessions de sous-agents',
+  'settings.openchamber.visual.field.allowPromptingSubagentSessions': 'Autoriser les requêtes dans les sessions de sous-agents',
   'settings.openchamber.visual.field.showToolFileIconsAria': 'Afficher les icônes des fichiers d\'outils',
   'settings.openchamber.visual.field.codeBlockLineWrapAria': 'Renvoyer à la ligne les blocs de code',
   'settings.openchamber.visual.field.codeBlockLineWrap': 'Renvoyer à la ligne les blocs de code',

packages/ui/src/lib/i18n/messages/ja.settings.ts

@@ -1799,6 +1799,8 @@ export const settingsDict = {
   'settings.openchamber.visual.field.showSplitAssistantMessageActionsAria': 'インラインアシスタントアクション',
   'settings.openchamber.visual.field.showSplitAssistantMessageActions': 'インラインアシスタントアクション',
   'settings.openchamber.visual.field.showSplitAssistantMessageActionsTooltip': '同じ応答内の後のツール呼び出しの前に表示されるアシスタントテキストブロックに、回答コピー、画像保存、読み上げを表示します。',
+  'settings.openchamber.visual.field.allowPromptingSubagentSessionsAria': 'サブエージェントセッションへのプロンプトを許可',
+  'settings.openchamber.visual.field.allowPromptingSubagentSessions': 'サブエージェントセッションへのプロンプトを許可',
   'settings.openchamber.visual.field.showToolFileIconsAria': 'ツールファイルアイコンを表示',
   'settings.openchamber.visual.field.codeBlockLineWrapAria': 'コードブロックの行を折り返す',
   'settings.openchamber.visual.field.codeBlockLineWrap': 'コードブロックの行を折り返す',

packages/ui/src/lib/i18n/messages/ko.settings.ts

@@ -1766,6 +1766,8 @@ export const settingsDict = {
   'settings.openchamber.visual.field.showSplitAssistantMessageActionsAria': '인라인 어시스턴트 작업',
   'settings.openchamber.visual.field.showSplitAssistantMessageActions': '인라인 어시스턴트 작업',
   'settings.openchamber.visual.field.showSplitAssistantMessageActionsTooltip': '같은 응답에서 이후 도구 호출 앞에 나타나는 어시스턴트 텍스트 블록에 답변 복사, 이미지로 저장, 소리 내어 읽기 작업을 표시합니다.',
+  'settings.openchamber.visual.field.allowPromptingSubagentSessionsAria': '하위 에이전트 세션에 프롬프트 허용',
+  'settings.openchamber.visual.field.allowPromptingSubagentSessions': '하위 에이전트 세션에 프롬프트 허용',
   'settings.openchamber.visual.field.showToolFileIconsAria': '도구 파일 아이콘 표시',
   'settings.openchamber.visual.field.codeBlockLineWrapAria': '코드 블록 줄 바꿈',
   'settings.openchamber.visual.field.codeBlockLineWrap': '코드 블록 줄 바꿈',

packages/ui/src/lib/i18n/messages/pl.settings.ts

@@ -1017,6 +1017,8 @@ export const settingsDict = {
   'settings.openchamber.visual.field.showSplitAssistantMessageActions': 'Akcje asystenta w treści',
   'settings.openchamber.visual.field.showSplitAssistantMessageActionsAria': 'Akcje asystenta w treści',
   'settings.openchamber.visual.field.showSplitAssistantMessageActionsTooltip': 'Pokaż Kopiuj odpowiedź, Zapisz jako obraz i Odczytaj na głos w blokach tekstu asystenta, które pojawiają się przed późniejszymi wywołaniami narzędzi w tej samej odpowiedzi.',
+  'settings.openchamber.visual.field.allowPromptingSubagentSessionsAria': 'Zezwalaj na wysyłanie promptów do sesji podagentów',
+  'settings.openchamber.visual.field.allowPromptingSubagentSessions': 'Zezwalaj na prompty w sesjach podagentów',
   'settings.openchamber.visual.field.showToolFileIcons': 'Pokaż ikony plików narzędzi',
   'settings.openchamber.visual.field.showToolFileIconsAria': 'Pokaż ikony plików narzędzi',
   'settings.openchamber.visual.field.codeBlockLineWrapAria': 'Zawijaj wiersze bloków kodu',

packages/ui/src/lib/i18n/messages/pt-BR.settings.ts

@@ -1766,6 +1766,8 @@ export const settingsDict = {
   "settings.openchamber.visual.field.showSplitAssistantMessageActionsAria": "Ações inline do assistente",
   "settings.openchamber.visual.field.showSplitAssistantMessageActions": "Ações inline do assistente",
   "settings.openchamber.visual.field.showSplitAssistantMessageActionsTooltip": "Mostra Copiar resposta, Salvar como imagem e Ler em voz alta em blocos de texto do assistente que aparecem antes de chamadas de ferramenta posteriores na mesma resposta.",
+  "settings.openchamber.visual.field.allowPromptingSubagentSessionsAria": "Permitir prompts em sessões de subagentes",
+  "settings.openchamber.visual.field.allowPromptingSubagentSessions": "Permitir prompts em sessões de subagentes",
   "settings.openchamber.visual.field.showToolFileIconsAria": "Mostrar ícones de arquivos de ferramentas",
   "settings.openchamber.visual.field.codeBlockLineWrapAria": "Quebrar linhas de blocos de código",
   "settings.openchamber.visual.field.codeBlockLineWrap": "Quebrar linhas de blocos de código",

packages/ui/src/lib/i18n/messages/uk.settings.ts

@@ -1766,6 +1766,8 @@ export const settingsDict = {
   "settings.openchamber.visual.field.showSplitAssistantMessageActionsAria": "Вбудовані дії асистента",
   "settings.openchamber.visual.field.showSplitAssistantMessageActions": "Вбудовані дії асистента",
   "settings.openchamber.visual.field.showSplitAssistantMessageActionsTooltip": "Показує «Скопіювати відповідь», «Зберегти як зображення» та озвучення для текстових блоків асистента, які з’являються перед пізнішими викликами інструментів у тій самій відповіді.",
+  "settings.openchamber.visual.field.allowPromptingSubagentSessionsAria": "Дозволити надсилати запити в сесії субагентів",
+  "settings.openchamber.visual.field.allowPromptingSubagentSessions": "Дозволити запити в сесіях субагентів",
   "settings.openchamber.visual.field.showToolFileIconsAria": "Показати значки файлів інструментів",
   "settings.openchamber.visual.field.codeBlockLineWrapAria": "Переносити рядки блоків коду",
   "settings.openchamber.visual.field.codeBlockLineWrap": "Переносити рядки блоків коду",

packages/ui/src/lib/i18n/messages/zh-CN.settings.ts

@@ -1766,6 +1766,8 @@ export const settingsDict = {
   'settings.openchamber.visual.field.showSplitAssistantMessageActionsAria': '内联助手操作',
   'settings.openchamber.visual.field.showSplitAssistantMessageActions': '内联助手操作',
   'settings.openchamber.visual.field.showSplitAssistantMessageActionsTooltip': '在同一条回复中，如果助手文本块后面还有工具调用，则显示“复制回答”“保存为图片”和“朗读”操作。',
+  'settings.openchamber.visual.field.allowPromptingSubagentSessionsAria': '允许向子智能体会话发送提示',
+  'settings.openchamber.visual.field.allowPromptingSubagentSessions': '允许向子智能体会话发送提示',
   'settings.openchamber.visual.field.showToolFileIconsAria': '显示工具文件图标',
   'settings.openchamber.visual.field.codeBlockLineWrapAria': '代码块自动换行',
   'settings.openchamber.visual.field.codeBlockLineWrap': '代码块自动换行',

packages/ui/src/lib/i18n/messages/zh-TW.settings.ts

@@ -1677,6 +1677,8 @@
   'settings.openchamber.visual.field.showSplitAssistantMessageActionsAria': '行內助理操作',
   'settings.openchamber.visual.field.showSplitAssistantMessageActions': '行內助理操作',
   'settings.openchamber.visual.field.showSplitAssistantMessageActionsTooltip': '在同一則回覆中，如果助理文字區塊後方還有工具呼叫，則顯示「複製回答」「儲存為圖片」和「朗讀」操作。',
+  'settings.openchamber.visual.field.allowPromptingSubagentSessionsAria': '允許向子 Agent 工作階段傳送提示',
+  'settings.openchamber.visual.field.allowPromptingSubagentSessions': '允許向子 Agent 工作階段傳送提示',
   'settings.openchamber.visual.field.showToolFileIconsAria': '顯示工具檔案圖示',
   'settings.openchamber.visual.field.codeBlockLineWrapAria': '程式碼區塊自動換行',
   'settings.openchamber.visual.field.codeBlockLineWrap': '程式碼區塊自動換行',

packages/ui/src/lib/settings/search.ts

@@ -237,6 +237,12 @@ const SETTINGS_SEARCH_ITEMS: readonly SettingsSearchItem[] = [
     descriptionKey: 'settings.openchamber.visual.field.showSplitAssistantMessageActionsTooltip',
     keywords: ['copy', 'save image', 'read aloud'],
   },
+  {
+    id: 'chat.subagent-read-only-banner',
+    page: 'chat',
+    titleKey: 'settings.openchamber.visual.field.allowPromptingSubagentSessions',
+    keywords: ['subagent', 'read only', 'prompt', 'banner'],
+  },
   {
     id: 'chat.tool-file-icons',
     page: 'chat',

packages/ui/src/stores/useUIStore.ts

@@ -655,6 +655,7 @@ interface UIStore {
   stickyUserHeader: boolean;
   expandedEditorToolbar: boolean;
   showSplitAssistantMessageActions: boolean;
+  allowPromptingSubagentSessions: boolean;
   isMobileSessionStatusBarCollapsed: boolean;
   mobileSessionPanelOpen: boolean;
   mobileSessionFilterProjectId: string | null;
@@ -808,6 +809,7 @@ interface UIStore {
   setStickyUserHeader: (value: boolean) => void;
   setExpandedEditorToolbar: (value: boolean) => void;
   setShowSplitAssistantMessageActions: (value: boolean) => void;
+  setAllowPromptingSubagentSessions: (value: boolean) => void;
   setIsMobileSessionStatusBarCollapsed: (value: boolean) => void;
   setMobileSessionPanelOpen: (value: boolean) => void;
   setMobileSessionFilterProjectId: (value: string | null) => void;
@@ -954,6 +956,7 @@ export const useUIStore = create<UIStore>()(
         stickyUserHeader: false,
         expandedEditorToolbar: false,
         showSplitAssistantMessageActions: false,
+        allowPromptingSubagentSessions: false,
         isMobileSessionStatusBarCollapsed: false,
         mobileSessionPanelOpen: false,
         mobileSessionFilterProjectId: null,
@@ -2115,6 +2118,9 @@ export const useUIStore = create<UIStore>()(
         setShowSplitAssistantMessageActions: (value) => {
           set({ showSplitAssistantMessageActions: value });
         },
+        setAllowPromptingSubagentSessions: (value) => {
+          set({ allowPromptingSubagentSessions: value });
+        },
         setIsMobileSessionStatusBarCollapsed: (value) => {
           set({ isMobileSessionStatusBarCollapsed: value });
         },
@@ -2357,6 +2363,7 @@ export const useUIStore = create<UIStore>()(
           stickyUserHeader: state.stickyUserHeader,
           expandedEditorToolbar: state.expandedEditorToolbar,
           showSplitAssistantMessageActions: state.showSplitAssistantMessageActions,
+          allowPromptingSubagentSessions: state.allowPromptingSubagentSessions,
           isMobileSessionStatusBarCollapsed: state.isMobileSessionStatusBarCollapsed,
           mobileSessionFilterProjectId: state.mobileSessionFilterProjectId,
           shortcutOverrides: state.shortcutOverrides,