feat: add toggle to show/hide thinking and tool call messages

- Add showThinkingAndTools preference to ChatContext (default false, persisted in localStorage)
- Filter thinking and tool_call messages in MessageList based on preference
- Add toggle switch in Settings > Other panel

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/components/chat/MessageList.tsx

@@ -19,7 +19,10 @@ function isAgentSideRole(role: MessageRole): boolean {
 }
 
 export function MessageList() {
-	const { messages, toolsExpanded } = useChatContext();
+	const { messages, toolsExpanded, showThinkingAndTools } = useChatContext();
+	const visibleMessages = showThinkingAndTools
+		? messages
+		: messages.filter((m) => m.role !== "thinking" && m.role !== "tool_call");
 	const chatRef = useRef<HTMLDivElement>(null);
 	const stickToBottomRef = useRef(true);
 	const prevMessageCountRef = useRef(0);
@@ -76,8 +79,8 @@ export function MessageList() {
 
 	return (
 		<div className={styles.chat} ref={chatRef}>
-			{messages.map((msg, index) => {
-				const prev = messages[index - 1];
+			{visibleMessages.map((msg, index) => {
+				const prev = visibleMessages[index - 1];
 				const prevIsAgentSide = prev ? isAgentSideRole(prev.role) : false;
 				const isAgentSide = isAgentSideRole(msg.role);
 				const agentGutter = isAgentSide ? (prevIsAgentSide ? "spacer" : "avatar") : "none";

frontend/src/context/ChatContext.tsx

@@ -58,6 +58,7 @@ interface ChatContextValue {
 	extensionStatuses: Record<string, string>;
 	extensionDialog: ExtensionDialogState | null;
 	toolsExpanded: boolean;
+	showThinkingAndTools: boolean;
 	toggleSidebar: () => void;
 	closeSidebar: () => void;
 	loadSessions: () => Promise<void>;
@@ -77,6 +78,7 @@ interface ChatContextValue {
 	abortStream: () => Promise<void>;
 	abortRetry: () => Promise<void>;
 	toggleToolsExpanded: () => void;
+	toggleShowThinkingAndTools: () => void;
 	respondExtensionDialog: (response: Record<string, unknown>) => void;
 	dismissExtensionDialog: () => void;
 	applyModelSelection: (key: string) => Promise<void>;
@@ -90,6 +92,7 @@ const THINKING_LEVELS_LIST: ThinkingLevel[] = ["off", "minimal", "low", "medium"
 const LAST_ACTIVE_SESSION_KEY = "webui:lastActiveSessionPath";
 const EPHEMERAL_SESSION_ID = "__ephemeral__";
 const EPHEMERAL_CLEANUP_KEY = "webui:ephemeralSessionPath";
+const SHOW_THINKING_TOOLS_KEY = "webui:showThinkingAndTools";
 
 function isActiveSessionBound(
 	isEphemeral: boolean,
@@ -512,6 +515,13 @@ export function ChatProvider({ children }: { children: ReactNode }) {
 	const [extensionStatuses, setExtensionStatuses] = useState<Record<string, string>>({});
 	const [extensionDialog, setExtensionDialog] = useState<ExtensionDialogState | null>(null);
 	const [toolsExpanded, setToolsExpanded] = useState(false);
+	const [showThinkingAndTools, setShowThinkingAndTools] = useState(() => {
+		try {
+			return localStorage.getItem(SHOW_THINKING_TOOLS_KEY) === "true";
+		} catch {
+			return false;
+		}
+	});
 	const [isEphemeralSession, setIsEphemeralSession] = useState(false);
 
 	const sessionCache = useRef(new Map<string, SessionHistoryPayload>());
@@ -596,9 +606,16 @@ export function ChatProvider({ children }: { children: ReactNode }) {
 				}
 
 				const sid = data.sessionId != null ? String(data.sessionId) : "";
-				if (data.sessionName && !isMachineSessionLabel(data.sessionName, sid)) {
-					setHeaderTitle(formatSessionTitle(data.sessionName));
-				}
+				setSessions((currentSessions) => {
+					const pathKey = isEphemeralRef.current ? backendSessionPathRef.current : activeSessionPathRef.current;
+					const row = pathKey ? currentSessions.find((s) => s.path === pathKey) : undefined;
+					if (row?.name && !isMachineSessionLabel(row.name, sid)) {
+						setHeaderTitle(formatSessionTitle(row.name));
+					} else if (data.sessionName && !isMachineSessionLabel(data.sessionName, sid)) {
+						setHeaderTitle(formatSessionTitle(data.sessionName));
+					}
+					return currentSessions;
+				});
 			});
 		});
 	}, []);
@@ -619,16 +636,14 @@ export function ChatProvider({ children }: { children: ReactNode }) {
 		const pathKey = isEphemeralRef.current ? backendSessionPathRef.current : activeSessionPathRef.current;
 		setSessions((currentSessions) => {
 			const row = pathKey ? currentSessions.find((s) => s.path === pathKey) : undefined;
-			if (data.sessionName && !isMachineSessionLabel(data.sessionName, sid)) {
+			if (row?.name && !isMachineSessionLabel(row.name, sid)) {
+				setHeaderTitle(formatSessionTitle(row.name));
+			} else if (data.sessionName && !isMachineSessionLabel(data.sessionName, sid)) {
 				setHeaderTitle(formatSessionTitle(data.sessionName));
 			} else if (isEphemeralRef.current) {
 				setHeaderTitle("临时对话");
-			} else if (row) {
-				if (row.name && !isMachineSessionLabel(row.name, sid)) {
-					setHeaderTitle(formatSessionTitle(row.name));
-				} else if (row.firstMessage && row.firstMessage !== "(空)") {
-					setHeaderTitle(formatSessionTitle(titleFromFirstUserMessage(row.firstMessage)));
-				}
+			} else if (row?.firstMessage && row.firstMessage !== "(空)") {
+				setHeaderTitle(formatSessionTitle(titleFromFirstUserMessage(row.firstMessage)));
 			}
 			return currentSessions;
 		});
@@ -1360,6 +1375,18 @@ export function ChatProvider({ children }: { children: ReactNode }) {
 		setToolsExpanded((prev) => !prev);
 	}, []);
 
+	const toggleShowThinkingAndTools = useCallback(() => {
+		setShowThinkingAndTools((prev) => {
+			const next = !prev;
+			try {
+				localStorage.setItem(SHOW_THINKING_TOOLS_KEY, String(next));
+			} catch {
+				/* ignore */
+			}
+			return next;
+		});
+	}, []);
+
 	const respondExtensionDialog = useCallback((response: Record<string, unknown>) => {
 		if (!extensionDialog) return;
 		void chatApi.sendExtensionUiResponse(extensionDialog.id, response).catch(() => {});
@@ -1901,6 +1928,7 @@ export function ChatProvider({ children }: { children: ReactNode }) {
 		extensionStatuses,
 		extensionDialog,
 		toolsExpanded,
+		showThinkingAndTools,
 		toggleSidebar: () => setSidebarOpen((o) => !o),
 		closeSidebar: () => setSidebarOpen(false),
 		loadSessions,
@@ -1916,6 +1944,7 @@ export function ChatProvider({ children }: { children: ReactNode }) {
 		abortStream,
 		abortRetry,
 		toggleToolsExpanded,
+		toggleShowThinkingAndTools,
 		respondExtensionDialog,
 		dismissExtensionDialog,
 		applyModelSelection,

frontend/src/routes/SettingsPage.tsx

@@ -5,6 +5,7 @@ import type { PromptFile } from "../api/prompts";
 import * as settingsApi from "../api/settings";
 import { useAvatars } from "../context/AvatarContext";
 import { useBootstrap } from "../context/BootstrapContext";
+import { useChatContext } from "../context/ChatContext";
 import type { AgentToolInfo, EnvironmentInfo, EnvironmentToolsInfo, ExtensionInfo, McpServerInfo, RuntimeInfo, SettingsPaneId, SkillInfo } from "../types/events";
 import type { McpToolInfo } from "../types/events";
 import { renderMarkdown } from "../utils/markdown";
@@ -309,6 +310,7 @@ function McpToolItem({
 export function SettingsPage() {
 	const { markRouteReady } = useBootstrap();
 	const { updateAvatars } = useAvatars();
+	const { showThinkingAndTools, toggleShowThinkingAndTools } = useChatContext();
 	const [activePane, setActivePane] = useState<SettingsPaneId>("prompt");
 	const [systemPrompt, setSystemPrompt] = useState("");
 	const [systemPromptPath, setSystemPromptPath] = useState("");
@@ -1348,6 +1350,23 @@ export function SettingsPage() {
 									<p className={styles.fieldHint}>
 										留空则不显示对应头像。仅支持 http / https 图片链接。
 									</p>
+									<div className={styles.field}>
+										<span className={styles.fieldLabel}>显示思考过程与工具调用</span>
+										<label className={styles.skillToggle}>
+											<input
+												type="checkbox"
+												checked={showThinkingAndTools}
+												onChange={toggleShowThinkingAndTools}
+											/>
+											<span className={styles.skillToggleUi} aria-hidden />
+											<span className={styles.skillToggleLabel}>
+												{showThinkingAndTools ? "已开启" : "已关闭"}
+											</span>
+										</label>
+										<p className={styles.fieldHint}>
+											开启后在对话中显示 AI 的思考过程和工具调用详情，默认关闭。
+										</p>
+									</div>
 								</div>
 								{statusText && activePane === "other" ? (
 									<div className={`${styles.status} ${statusClass}`}>{statusText}</div>