feat: 完善会话交互并统一聊天页视觉样式

补齐会话重命名/删除与会话菜单能力，新增聊天参数透传与本地开关持久化，并统一输入区、消息区、代码块和弹框等关键交互样式。

Made-with: Cursor

src/api/chatSessions.ts

@@ -5,8 +5,8 @@
  * `CreateChatSessionDto`、`ChatSessionRowDto`、`ChatSessionListResponseDto`、
  * `ChatMessageRowDto`、`ChatMessageListResponseDto`。
  */
-import { getJson, postJson } from "./http";
+import { deleteJson, getJson, patchJson, postJson } from "./http";
-import { ApiPath, chatSessionMessagesPath } from "./paths";
+import { ApiPath, chatSessionMessagesPath, chatSessionPath, chatSessionTitlePath } from "./paths";
 
 /** `CreateChatSessionDto` */
 export type CreateChatSessionBody = {
@@ -63,6 +63,12 @@ export type ListMessagesQuery = {
   limit?: number;
 };
 
+/** `UpdateChatSessionTitleDto` */
+export type UpdateChatSessionTitleBody = {
+  /** 会话标题（可传空字符串清空） */
+  title: string;
+};
+
 /** 与首页消息列表结构一致，便于 `setMessages` */
 export type ChatTurnForUi = {
   id: string;
@@ -113,6 +119,22 @@ export async function listChatSessionMessages(
   return data.items;
 }
 
+/** 修改会话标题 */
+export async function updateChatSessionTitle(
+  sessionId: string,
+  body: UpdateChatSessionTitleBody,
+  signal?: AbortSignal,
+): Promise<ChatSessionRowDto> {
+  const path = chatSessionTitlePath(sessionId);
+  return patchJson<ChatSessionRowDto>(path, body, signal);
+}
+
+/** 删除会话（级联删除消息） */
+export async function deleteChatSession(sessionId: string, signal?: AbortSignal): Promise<void> {
+  const path = chatSessionPath(sessionId);
+  await deleteJson<void>(path, signal);
+}
+
 /** 将接口消息行规范为前端聊天列表项（忽略 `system` 等角色） */
 export function normalizeSessionMessages(rows: ChatMessageRowDto[]): ChatTurnForUi[] {
   const out: ChatTurnForUi[] = [];

src/api/http.ts

@@ -159,6 +159,33 @@ export async function postJson<TResponse>(
   }
 }
 
+/** PATCH JSON，返回解析后的响应体 `data`。 */
+export async function patchJson<TResponse>(
+  path: string,
+  body: JsonBody,
+  signal?: AbortSignal,
+): Promise<TResponse> {
+  try {
+    const response = await httpClient.patch<TResponse>(path, body, { signal });
+    return response.data;
+  } catch (error) {
+    throw toRequestError(error, "Request failed");
+  }
+}
+
+/** DELETE JSON，返回解析后的响应体 `data`（若接口无返回体可使用 `void` 类型接收）。 */
+export async function deleteJson<TResponse>(
+  path: string,
+  signal?: AbortSignal,
+): Promise<TResponse> {
+  try {
+    const response = await httpClient.delete<TResponse>(path, { signal });
+    return response.data;
+  } catch (error) {
+    throw toRequestError(error, "Request failed");
+  }
+}
+
 /**
  * POST JSON，返回原生 `Response`（用于需要直接读 body stream 的场景）。
  * 注意：不走 axios 拦截器以外的逻辑；若需鉴权请自行在 headers 中传入。

src/api/paths.ts

@@ -34,5 +34,15 @@ export function chatSessionMessagesPath(sessionId: string): string {
   return `/api/client/v1/chat/sessions/${encodeURIComponent(sessionId)}/messages`;
 }
 
+/** 单个会话资源路径（Swagger：`/api/client/v1/chat/sessions/{sessionId}`） */
+export function chatSessionPath(sessionId: string): string {
+  return `/api/client/v1/chat/sessions/${encodeURIComponent(sessionId)}`;
+}
+
+/** 会话标题更新路径（Swagger：`/api/client/v1/chat/sessions/{sessionId}/title`） */
+export function chatSessionTitlePath(sessionId: string): string {
+  return `/api/client/v1/chat/sessions/${encodeURIComponent(sessionId)}/title`;
+}
+
 /** 请求拦截器跳过附加 Bearer 的路径（与 `ApiPath` 保持一致） */
 export const pathsWithoutBearerAuth: readonly string[] = [ApiPath.authRefresh, ApiPath.authLogout];

src/api/qwenChat.ts

@@ -38,6 +38,10 @@ export interface StreamOptions {
   model?: string;
   /** 与会话绑定流式补全时传入（若后端支持） */
   sessionId?: string;
+  /** 是否启用联网搜索（OpenAPI: `enableWebSearch`） */
+  enableWebSearch?: boolean;
+  /** 是否启用深度思考（OpenAPI: `enableThinking`） */
+  enableThinking?: boolean;
   onToken: (token: string) => void;
   signal?: AbortSignal;
   /** 超时后中止请求（与业务 `signal` 合并） */
@@ -146,6 +150,8 @@ export async function streamQwenChat(options: StreamOptions): Promise<void> {
         messages: options.messages,
         ...(options.model ? { model: options.model } : {}),
         ...(options.sessionId ? { sessionId: options.sessionId } : {}),
+        enableWebSearch: !!options.enableWebSearch,
+        enableThinking: !!options.enableThinking,
       }),
       signal: mergedSignal,
       openWhenHidden: true,

src/components/StreamMessage.tsx

@@ -1,3 +1,6 @@
+import { useState } from "react";
+import { CheckOutlined, CopyOutlined } from "@ant-design/icons";
+import { Button, message } from "antd";
 import ReactMarkdown from "react-markdown";
 import remarkGfm from "remark-gfm";
 import remarkMath from "remark-math";
@@ -5,19 +8,68 @@ import rehypeKatex from "rehype-katex";
 import rehypeHighlight from "rehype-highlight";
 import "katex/dist/katex.min.css";
 import "highlight.js/styles/github.css";
+import type { ReactNode } from "react";
 
 type StreamMessageProps = {
   content: string;
 };
 
+function extractText(node: ReactNode): string {
+  if (typeof node === "string") return node;
+  if (typeof node === "number") return String(node);
+  if (!node) return "";
+  if (Array.isArray(node)) return node.map((item) => extractText(item)).join("");
+  if (typeof node === "object" && "props" in node) {
+    const child = (node as { props?: { children?: ReactNode } }).props?.children;
+    return extractText(child);
+  }
+  return "";
+}
+
+function MarkdownPreBlock(props: { children: ReactNode }) {
+  const [copied, setCopied] = useState(false);
+  const codeText = extractText(props.children).replace(/\n$/, "");
+
+  const onCopy = async () => {
+    try {
+      await navigator.clipboard.writeText(codeText);
+      setCopied(true);
+      message.success("代码已复制");
+      window.setTimeout(() => setCopied(false), 1200);
+    } catch {
+      message.error("复制失败");
+    }
+  };
+
+  return (
+    <div className="my-2 overflow-hidden rounded-xl bg-neutral-50">
+      <div className="flex items-center justify-end px-2 py-1">
+        <Button
+          type="text"
+          size="small"
+          icon={copied ? <CheckOutlined /> : <CopyOutlined />}
+          className="text-neutral-600 hover:bg-black/5! hover:text-neutral-800!"
+          onClick={() => {
+            void onCopy();
+          }}
+        >
+          {copied ? "已复制" : "复制"}
+        </Button>
+      </div>
+      <pre className="m-0 overflow-x-auto p-3 text-[13px] text-neutral-800">{props.children}</pre>
+    </div>
+  );
+}
+
 export default function StreamMessage(props: StreamMessageProps) {
   return (
-    <div className="rounded-2xl border border-[var(--ds-border)] bg-neutral-50/80 px-4 py-2.5 text-[15px] leading-relaxed text-neutral-800">
+    <div className="rounded-2xl px-4 py-2.5 text-[15px] leading-relaxed text-neutral-800">
-      <div className="prose prose-sm max-w-none break-words prose-neutral prose-pre:my-2 prose-pre:rounded-lg prose-pre:border prose-pre:border-[var(--ds-border)] prose-pre:bg-neutral-950 prose-pre:p-3 prose-code:before:content-none prose-code:after:content-none">
+      <div className="prose prose-sm max-w-none break-words prose-neutral prose-code:before:content-none prose-code:after:content-none">
         <ReactMarkdown
           remarkPlugins={[remarkGfm, remarkMath]}
           rehypePlugins={[rehypeKatex, rehypeHighlight]}
           components={{
+            pre: ({ children }) => <MarkdownPreBlock>{children}</MarkdownPreBlock>,
             table: ({ children }) => (
               <div className="my-2 overflow-x-auto rounded-lg border border-[var(--ds-border)]">
                 <table className="w-full border-collapse text-sm">{children}</table>

src/index.css

@@ -1,10 +1,36 @@
 @import "tailwindcss";
 
+*,
+*::before,
+*::after {
+  box-sizing: border-box;
+}
+
+p {
+  margin: 0;
+}
+
 html,
 body {
   margin: 0;
   height: 100%;
   font-size: 14px;
+  line-height: 1.5;
+  color: #171717;
+  background: #ffffff;
+  font-family:
+    "Inter",
+    -apple-system,
+    BlinkMacSystemFont,
+    "Segoe UI",
+    Roboto,
+    "Helvetica Neue",
+    "PingFang SC",
+    "Hiragino Sans GB",
+    "Microsoft YaHei",
+    sans-serif;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
   overflow: hidden;
 }
 
@@ -31,11 +57,29 @@ body {
 :root {
   --ds-bg-main: #ffffff;
   --ds-bg-sider: #f7f7f8;
-  --ds-border: #ececec;
+  --ds-border: #e9e9eb;
-  --ds-text-secondary: #8b8b8b;
+  --ds-text-secondary: #8a8f99;
   --ds-user-bubble: #e8f3ff;
   --ds-user-border: #cce7ff;
-  --ds-active-item: #e3f2fd;
+  --ds-active-item: #eaf3ff;
-  --ds-send: #4dabf7;
+  --ds-accent: #4a90e2;
-  --ds-send-hover: #339af0;
+  --ds-send: #4a90e2;
+  --ds-send-hover: #3b7fd0;
+}
+
+/* 覆盖 highlight.js github 主题默认白底，保持代码块容器背景一致 */
+pre code.hljs {
+  background: transparent !important;
+}
+
+/* 全局 Dropdown 菜单样式 */
+.ant-dropdown-menu {
+  border-radius: 14px !important;
+  padding: 4px !important;
+}
+
+.ant-dropdown-menu-item,
+.ant-dropdown-menu-submenu-title,
+.ant-dropdown-menu-item-danger {
+  border-radius: 12px !important;
 }

src/main.tsx

@@ -1,5 +1,6 @@
 import React from "react";
 import ReactDOM from "react-dom/client";
+import { ConfigProvider, theme } from "antd";
 import { BrowserRouter } from "react-router-dom";
 import "antd/dist/reset.css";
 import "./index.css";
@@ -7,8 +8,50 @@ import App from "./App";
 
 ReactDOM.createRoot(document.getElementById("root")!).render(
   <React.StrictMode>
+    <ConfigProvider
+      theme={{
+        algorithm: theme.defaultAlgorithm,
+        token: {
+          colorPrimary: "#4A90E2",
+          colorBgBase: "#F7F7F8",
+          colorBgContainer: "#FFFFFF",
+          colorBorder: "#E9E9EB",
+          colorText: "#1F2329",
+          colorTextSecondary: "#8A8F99",
+          borderRadius: 12,
+          borderRadiusLG: 18,
+          controlHeight: 36,
+          fontSize: 14,
+          boxShadowSecondary:
+            "0 18px 42px rgba(15, 23, 42, 0.12), 0 2px 8px rgba(15, 23, 42, 0.06)",
+        },
+        components: {
+          Button: {
+            borderRadius: 10,
+            controlHeight: 36,
+          },
+          Input: {
+            borderRadius: 12,
+          },
+          Select: {
+            borderRadius: 10,
+          },
+          Dropdown: {
+            borderRadius: 12,
+          },
+          Modal: {
+            contentBg: "#FFFFFF",
+            headerBg: "transparent",
+            footerBg: "transparent",
+            titleColor: "#1F2329",
+            titleFontSize: 16,
+          },
+        },
+      }}
+    >
       <BrowserRouter>
         <App />
       </BrowserRouter>
+    </ConfigProvider>
   </React.StrictMode>,
 );

src/pages/index.tsx

@@ -2,18 +2,23 @@ import type { CSSProperties } from "react";
 import { useCallback, useEffect, useMemo, useRef, useState, useSyncExternalStore } from "react";
 import {
   ArrowUpOutlined,
+  CopyOutlined,
+  DeleteOutlined,
+  EditOutlined,
   LogoutOutlined,
   MenuFoldOutlined,
   MenuUnfoldOutlined,
-  MessageOutlined,
   MobileOutlined,
   MoreOutlined,
   PaperClipOutlined,
   PlusOutlined,
   QuestionCircleOutlined,
+  RedoOutlined,
   SearchOutlined,
+  ShareAltOutlined,
   SettingOutlined,
   ThunderboltOutlined,
+  VerticalAlignTopOutlined,
   UserOutlined,
 } from "@ant-design/icons";
 import {
@@ -24,7 +29,9 @@ import {
   Dropdown,
   Input,
   Layout,
+  Modal,
   Select,
+  Tooltip,
   Typography,
   message,
 } from "antd";
@@ -33,11 +40,13 @@ import { useNavigate, useParams } from "react-router-dom";
 import { ACCESS_TOKEN_KEY, SessionExpiredError, USER_KEY, logout } from "../api/auth";
 import {
   createChatSession,
+  deleteChatSession,
   listChatSessionMessages,
   listChatSessions,
   normalizeSessionMessages,
   sessionDisplayTitle,
   sessionStableId,
+  updateChatSessionTitle,
   type ChatSession,
   type ChatTurnForUi,
 } from "../api/chatSessions";
@@ -49,22 +58,18 @@ const MOBILE_WIDTH = 750;
 
 type UiMessage = ChatTurnForUi;
 
+type StoredUserProfile = {
+  nickname: string;
+  avatarUrl: string;
+};
+
 function parseStoredUserProfileJson(raw: string | null): { displayName: string; avatar?: string } {
   try {
     if (!raw) return { displayName: "用户" };
-    const u = JSON.parse(raw) as Record<string, unknown>;
+    const user = JSON.parse(raw) as StoredUserProfile;
-    const nickname = typeof u.nickname === "string" && u.nickname.trim() ? u.nickname.trim() : "";
+    const displayName = user.nickname.trim() || "用户";
-    const displayName =
+    const avatar = user.avatarUrl || undefined;
-      nickname ||
+    return { displayName, avatar };
-      (typeof u.name === "string" && u.name) ||
-      (typeof u.username === "string" && u.username) ||
-      (typeof u.phone === "string" && u.phone) ||
-      "用户";
-    const avatar =
-      (typeof u.avatar === "string" && u.avatar) ||
-      (typeof u.avatarUrl === "string" && u.avatarUrl) ||
-      undefined;
-    return { displayName: String(displayName), avatar };
   } catch {
     return { displayName: "用户" };
   }
@@ -94,35 +99,70 @@ const INITIAL_MESSAGES: UiMessage[] = [
 const STREAM_TIMEOUT_MS = 90000;
 const MAX_STREAM_RETRY = 1;
 const CONTEXT_WINDOW_SIZE = 8;
+const DEEP_THINK_STORAGE_KEY = "chatone-deep-think-enabled";
+const SMART_SEARCH_STORAGE_KEY = "chatone-smart-search-enabled";
+const SELECTED_MODEL_STORAGE_KEY = "chatone-selected-model";
 
 /** 展示名与请求 model 字段；需与后端实际支持的模型 id 一致 */
-const DEFAULT_QWEN_MODEL = "qwen3.5-flash";
+const DEFAULT_QWEN_MODEL = "qwen3.6-plus";
 const QWEN_MODEL_OPTIONS: { value: string; label: string }[] = [
   { value: "qwen3-max", label: "Qwen3-Max" },
-  { value: "qwen3.6-plus", label: "Qwen3.6-Plus" },
+  { value: DEFAULT_QWEN_MODEL, label: "Qwen3.6-Plus" },
-  { value: DEFAULT_QWEN_MODEL, label: "Qwen3.5-Flash" },
+  { value: "qwen3.5-flash", label: "Qwen3.5-Flash" },
+  { value: "qwen-plus", label: "Qwen-Plus" },
+  { value: "deepseek-r1", label: "DeepSeek-R1" },
+  { value: "kimi-k2.6", label: "Kimi-K2.6" },
 ];
 
+function replaceSessionUrl(sessionId: string) {
+  const base = import.meta.env.BASE_URL ?? "/";
+  const prefix = base === "/" ? "" : base.replace(/\/$/, "");
+  const nextPath = `${prefix}/s/${encodeURIComponent(sessionId)}`;
+  window.history.replaceState(window.history.state, "", nextPath);
+}
+
 export default function HomePage() {
+  const [modal, modalContextHolder] = Modal.useModal();
   const navigate = useNavigate();
   const { sessionId: routeSessionId } = useParams<{ sessionId?: string }>();
   const [collapsed, setCollapsed] = useState(false);
   const [mobileSidebarOpen, setMobileSidebarOpen] = useState(false);
-  const [viewportWidth, setViewportWidth] = useState(0);
   const [isMobile, setIsMobile] = useState(false);
   const [inputValue, setInputValue] = useState("");
   const [messages, setMessages] = useState<UiMessage[]>(INITIAL_MESSAGES);
   const [isSending, setIsSending] = useState(false);
-  const [deepThink, setDeepThink] = useState(false);
+  const [deepThink, setDeepThink] = useState(() => {
-  const [smartSearch, setSmartSearch] = useState(false);
+    try {
-  const [selectedModel, setSelectedModel] = useState(DEFAULT_QWEN_MODEL);
+      return window.localStorage.getItem(DEEP_THINK_STORAGE_KEY) === "1";
+    } catch {
+      return false;
+    }
+  });
+  const [smartSearch, setSmartSearch] = useState(() => {
+    try {
+      return window.localStorage.getItem(SMART_SEARCH_STORAGE_KEY) === "1";
+    } catch {
+      return false;
+    }
+  });
+  const [selectedModel, setSelectedModel] = useState(() => {
+    try {
+      const raw = window.localStorage.getItem(SELECTED_MODEL_STORAGE_KEY);
+      const supported = QWEN_MODEL_OPTIONS.some((item) => item.value === raw);
+      return supported && raw ? raw : DEFAULT_QWEN_MODEL;
+    } catch {
+      return DEFAULT_QWEN_MODEL;
+    }
+  });
   const messageListRef = useRef<HTMLDivElement | null>(null);
   const abortRef = useRef<AbortController | null>(null);
 
   const [sessions, setSessions] = useState<ChatSession[]>([]);
   const [sessionsLoading, setSessionsLoading] = useState(false);
   const [sessionMutationBusy, setSessionMutationBusy] = useState(false);
+  const [sessionActionBusyId, setSessionActionBusyId] = useState<string | null>(null);
   const [activeSessionId, setActiveSessionId] = useState<string | null>(null);
+  const activeSessionIdRef = useRef<string | null>(null);
 
   const userJsonSnapshot = useSyncExternalStore(
     subscribeUserProfile,
@@ -134,6 +174,22 @@ export default function HomePage() {
     [userJsonSnapshot],
   );
 
+  useEffect(() => {
+    activeSessionIdRef.current = activeSessionId;
+  }, [activeSessionId]);
+
+  useEffect(() => {
+    window.localStorage.setItem(DEEP_THINK_STORAGE_KEY, deepThink ? "1" : "0");
+  }, [deepThink]);
+
+  useEffect(() => {
+    window.localStorage.setItem(SMART_SEARCH_STORAGE_KEY, smartSearch ? "1" : "0");
+  }, [smartSearch]);
+
+  useEffect(() => {
+    window.localStorage.setItem(SELECTED_MODEL_STORAGE_KEY, selectedModel);
+  }, [selectedModel]);
+
   /** 用户信息下拉：略增大行高与项间距 */
   const userMenuItemStyle: CSSProperties = {
     height: "auto",
@@ -189,7 +245,6 @@ export default function HomePage() {
         window.innerWidth,
         document.documentElement.clientWidth || window.innerWidth,
       );
-      setViewportWidth(w);
       const mobile = w < MOBILE_WIDTH;
       setIsMobile(mobile);
       if (!mobile) setMobileSidebarOpen(false);
@@ -229,6 +284,10 @@ export default function HomePage() {
     void refreshSessionList();
   }, [refreshSessionList]);
 
+  /**
+   * 打开指定会话并加载历史消息。
+   * 默认会把当前会话 id 同步到路由；当由路由参数驱动时可关闭 URL 更新，避免重复跳转。
+   */
   const openSession = useCallback(
     async (sessionId: string, options?: { updateUrl?: boolean }) => {
       if (options?.updateUrl ?? true) {
@@ -253,32 +312,140 @@ export default function HomePage() {
       setMessages(INITIAL_MESSAGES.map((m) => ({ ...m })));
       return;
     }
+    // 路由已与当前会话一致时，不重复加载，避免覆盖流式中的本地消息状态。
+    if (routeSessionId === activeSessionIdRef.current) return;
     void openSession(routeSessionId, { updateUrl: false });
   }, [openSession, routeSessionId]);
 
   const handleNewSession = async () => {
-    if (sessionMutationBusy) return;
+    setActiveSessionId(null);
-    setSessionMutationBusy(true);
-    try {
-      const row = await createChatSession();
-      await refreshSessionList();
-      setActiveSessionId(row.id);
     setMessages(INITIAL_MESSAGES.map((m) => ({ ...m })));
-      navigate(`/s/${encodeURIComponent(row.id)}`);
+    navigate("/");
-    } catch (e) {
-      const text = e instanceof Error ? e.message : "新建会话失败";
-      message.error(text);
-    } finally {
-      setSessionMutationBusy(false);
-    }
   };
 
+  const handleRenameSession = useCallback(
+    (session: ChatSession) => {
+      const sid = sessionStableId(session);
+      if (!sid || sessionActionBusyId) return;
+      let nextTitle = session.title;
+      modal.confirm({
+        centered: true,
+        title: "重命名会话",
+        content: (
+          <Input
+            autoFocus
+            maxLength={200}
+            defaultValue={session.title}
+            placeholder="请输入会话标题"
+            onChange={(event) => {
+              nextTitle = event.target.value;
+            }}
+            onPressEnter={(event) => {
+              event.preventDefault();
+            }}
+          />
+        ),
+        okText: "保存",
+        cancelText: "取消",
+        async onOk() {
+          if (nextTitle === session.title) return;
+          setSessionActionBusyId(sid);
+          try {
+            await updateChatSessionTitle(sid, { title: nextTitle });
+            await refreshSessionList();
+            message.success("会话已重命名");
+          } catch (error) {
+            const text = error instanceof Error ? error.message : "重命名会话失败";
+            message.error(text);
+            throw error;
+          } finally {
+            setSessionActionBusyId(null);
+          }
+        },
+      });
+    },
+    [modal, refreshSessionList, sessionActionBusyId],
+  );
+
+  const handleDeleteSession = useCallback(
+    (session: ChatSession) => {
+      const sid = sessionStableId(session);
+      if (!sid || sessionActionBusyId) return;
+      modal.confirm({
+        centered: true,
+        title: "删除会话",
+        content: "确认删除该会话？删除后不可恢复。",
+        okText: "删除",
+        okType: "danger",
+        cancelText: "取消",
+        async onOk() {
+          setSessionActionBusyId(sid);
+          try {
+            await deleteChatSession(sid);
+            if (activeSessionId === sid) {
+              abortRef.current?.abort();
+              setIsSending(false);
+              setActiveSessionId(null);
+              setMessages(INITIAL_MESSAGES.map((m) => ({ ...m })));
+              navigate("/");
+            }
+            await refreshSessionList();
+            message.success("会话已删除");
+          } catch (error) {
+            const text = error instanceof Error ? error.message : "删除会话失败";
+            message.error(text);
+            throw error;
+          } finally {
+            setSessionActionBusyId(null);
+          }
+        },
+      });
+    },
+    [activeSessionId, modal, navigate, refreshSessionList, sessionActionBusyId],
+  );
+
+  const handleCopyUserMessage = useCallback(async (content: string) => {
+    try {
+      await navigator.clipboard.writeText(content);
+      message.success("已复制");
+    } catch {
+      message.error("复制失败，请检查浏览器权限");
+    }
+  }, []);
+
+  const handleCopyAssistantMessage = useCallback(async (content: string) => {
+    try {
+      await navigator.clipboard.writeText(content);
+      message.success("已复制");
+    } catch {
+      message.error("复制失败，请检查浏览器权限");
+    }
+  }, []);
+
   const sendMessage = async () => {
     const trimmed = inputValue.trim();
     if (!trimmed || isSending) return;
-    if (!activeSessionId) {
+    let targetSessionId = activeSessionId;
-      message.warning("请先新建会话");
+    if (!targetSessionId) {
+      if (sessionMutationBusy) return;
+      setSessionMutationBusy(true);
+      try {
+        const row = await createChatSession({
+          // 首条提问作为会话初始标题（后端限制 200）。
+          title: trimmed.slice(0, 200),
+        });
+        targetSessionId = row.id;
+        setActiveSessionId(row.id);
+        replaceSessionUrl(row.id);
+        // 侧栏列表后台刷新，不阻塞当前消息发送。
+        void refreshSessionList();
+      } catch (e) {
+        const text = e instanceof Error ? e.message : "新建会话失败";
+        message.error(text);
         return;
+      } finally {
+        setSessionMutationBusy(false);
+      }
     }
 
     setInputValue("");
@@ -330,7 +497,9 @@ export default function HomePage() {
         await streamQwenChat({
           messages: retryMessages,
           model: selectedModel,
-          sessionId: activeSessionId ?? undefined,
+          sessionId: targetSessionId ?? undefined,
+          enableWebSearch: smartSearch,
+          enableThinking: deepThink,
           signal: controller.signal,
           timeoutMs: STREAM_TIMEOUT_MS,
           onToken: (token) => {
@@ -429,21 +598,52 @@ export default function HomePage() {
               if (!sid) return null;
               const title = sessionDisplayTitle(s);
               const active = sid === activeSessionId;
+              const itemMenu: MenuProps = {
+                items: [
+                  { key: "rename", icon: <EditOutlined />, label: "重命名" },
+                  { key: "pin", icon: <VerticalAlignTopOutlined />, label: "置顶" },
+                  { key: "delete", icon: <DeleteOutlined />, danger: true, label: "删除" },
+                ],
+                onClick: ({ key, domEvent }) => {
+                  domEvent.stopPropagation();
+                  if (key === "rename") void handleRenameSession(s);
+                  if (key === "pin") message.info("置顶功能开发中");
+                  if (key === "delete") void handleDeleteSession(s);
+                },
+              };
               return (
-                <button
+                <div
                   key={sid}
+                  className="mb-1 flex w-full items-center gap-1 rounded-xl pr-1 text-[14px] text-neutral-700 transition-colors hover:bg-black/5"
+                  style={{
+                    background: active ? "var(--ds-active-item)" : undefined,
+                    color: active ? "var(--ds-accent)" : undefined,
+                  }}
+                >
+                  <button
                     type="button"
                     onClick={() => {
                       void openSession(sid);
                     }}
-                  className="mb-1 flex w-full items-center gap-2 rounded-xl px-3 py-2.5 text-left text-[13px] text-neutral-700 transition-colors hover:bg-black/5"
+                    className="flex min-h-12 min-w-0 flex-1 items-center rounded-xl px-3 py-3 text-left"
-                  style={{
-                    background: active ? "var(--ds-active-item)" : undefined,
-                  }}
                   >
-                  <MessageOutlined className="shrink-0 text-neutral-400" />
                     {(!collapsed || isMobile) && <span className="truncate">{title}</span>}
                   </button>
+                  {(!collapsed || isMobile) && (
+                    <Dropdown menu={itemMenu} trigger={["click"]} placement="bottomRight">
+                      <Button
+                        type="text"
+                        size="small"
+                        icon={<MoreOutlined />}
+                        loading={sessionActionBusyId === sid}
+                        className="text-neutral-500 hover:bg-black/5!"
+                        onClick={(event) => {
+                          event.stopPropagation();
+                        }}
+                      />
+                    </Dropdown>
+                  )}
+                </div>
               );
             })}
           </div>
@@ -487,6 +687,7 @@ export default function HomePage() {
       className="chat-one-shell flex h-dvh max-h-dvh overflow-hidden"
       style={{ background: "var(--ds-bg-main)" }}
     >
+      {modalContextHolder}
       {!isMobile && (
         <Sider
           trigger={null}
@@ -574,7 +775,7 @@ export default function HomePage() {
               ref={messageListRef}
               className="min-h-0 flex-1 overflow-y-auto overflow-x-hidden px-4 pt-6 pb-0 md:px-8 md:pt-6 md:pb-0"
             >
-              <div className="mx-auto flex max-w-3xl flex-col gap-5">
+              <div className="mx-auto flex max-w-4xl flex-col gap-5">
                 {messages.map((item) => (
                   <div
                     key={item.id}
@@ -582,24 +783,22 @@ export default function HomePage() {
                   >
                     <div
                       className={
-                        item.role === "user"
+                        item.role === "user" ? "group max-w-full px-4 " : "group w-full space-y-2"
-                          ? "max-w-[85%] rounded-2xl border px-4 py-2.5 text-[15px] leading-relaxed text-neutral-800"
-                          : "max-w-[85%] space-y-2"
-                      }
-                      style={
-                        item.role === "user"
-                          ? {
-                              background: "var(--ds-user-bubble)",
-                              borderColor: "var(--ds-user-border)",
-                            }
-                          : undefined
                       }
                     >
+                      {item.role === "user" && (
+                        <div
+                          className="rounded-2xl px-4 py-2.5 text-[15px] leading-relaxed text-neutral-800"
+                          style={{ background: "var(--ds-user-bubble)" }}
+                        >
+                          {item.content}
+                        </div>
+                      )}
                       {item.role === "assistant" && item.thinking && (
                         <Collapse
                           bordered={false}
                           size="small"
-                          className="!mb-2 !rounded-xl !bg-neutral-50 !border !border-[var(--ds-border)]"
+                          className="!mb-2 !rounded-xl !bg-transparent"
                           items={[
                             {
                               key: "think",
@@ -622,27 +821,92 @@ export default function HomePage() {
                         (item.content ? (
                           <StreamMessage content={item.content} />
                         ) : (
-                          <div className="rounded-2xl border border-[var(--ds-border)] bg-neutral-50/80 px-4 py-3 text-[14px] text-neutral-500">
+                          <div className="rounded-2xl px-4 py-3 text-[14px] text-neutral-500">
-                            <div className="flex items-center gap-2">
-                              <span>正在回复</span>
                             <span className="inline-flex items-center gap-1">
                               <span className="h-1.5 w-1.5 animate-bounce rounded-full bg-neutral-400 [animation-delay:-0.3s]" />
                               <span className="h-1.5 w-1.5 animate-bounce rounded-full bg-neutral-400 [animation-delay:-0.15s]" />
                               <span className="h-1.5 w-1.5 animate-bounce rounded-full bg-neutral-400" />
                             </span>
                           </div>
-                          </div>
                         ))}
-                      {item.role === "user" && item.content}
+                      {item.role === "assistant" && item.content && (
+                        <>
+                          <p className="mt-3 px-4 text-[12px] text-neutral-500 italic">
+                            本回答由 AI 生成，内容仅供参考，请仔细甄别。
+                          </p>
+                          <div className="mt-2 flex h-8 items-center gap-1 px-4 text-neutral-500 opacity-0 pointer-events-none transition-opacity group-hover:opacity-100 group-hover:pointer-events-auto">
+                            <Tooltip title="复制">
+                              <Button
+                                type="text"
+                                size="small"
+                                icon={<CopyOutlined />}
+                                className="!px-1 text-neutral-500 hover:bg-black/5!"
+                                aria-label="复制回复"
+                                onClick={() => {
+                                  void handleCopyAssistantMessage(item.content);
+                                }}
+                              />
+                            </Tooltip>
+                            <Tooltip title="重新生成">
+                              <Button
+                                type="text"
+                                size="small"
+                                icon={<RedoOutlined />}
+                                className="!px-1 text-neutral-500 hover:bg-black/5!"
+                                aria-label="重新生成"
+                                onClick={() => {
+                                  message.info("重新生成功能开发中");
+                                }}
+                              />
+                            </Tooltip>
+                            <Tooltip title="分享">
+                              <Button
+                                type="text"
+                                size="small"
+                                icon={<ShareAltOutlined />}
+                                className="!px-1 text-neutral-500 hover:bg-black/5!"
+                                aria-label="分享"
+                                onClick={() => {
+                                  message.info("分享功能开发中");
+                                }}
+                              />
+                            </Tooltip>
+                          </div>
+                        </>
+                      )}
+                      {item.role === "user" && (
+                        <div className="mt-2 flex h-7 items-center justify-end gap-1 text-neutral-500 opacity-0 pointer-events-none transition-opacity group-hover:opacity-100 group-hover:pointer-events-auto">
+                          <Button
+                            type="text"
+                            size="small"
+                            icon={<CopyOutlined />}
+                            className="text-neutral-500 hover:bg-black/5!"
+                            aria-label="复制消息"
+                            onClick={() => {
+                              void handleCopyUserMessage(item.content);
+                            }}
+                          />
+                          <Button
+                            type="text"
+                            size="small"
+                            icon={<EditOutlined />}
+                            className="text-neutral-500 hover:bg-black/5!"
+                            aria-label="编辑消息"
+                            onClick={() => {
+                              message.info("编辑功能开发中");
+                            }}
+                          />
+                        </div>
+                      )}
                     </div>
                   </div>
                 ))}
               </div>
             </div>
 
-            <div className="shrink-0 bg-[var(--ds-bg-main)] px-4 pb-4 pt-0 md:px-8 md:pb-4 md:pt-0">
+            <div className="shrink-0 bg-[var(--ds-bg-main)] px-4 pt-0 md:px-8 md:pt-0">
-              <div className="mx-auto max-w-3xl">
+              <div className="mx-auto max-w-4xl">
-                <div className="rounded-2xl border border-[var(--ds-border)] bg-neutral-50/50 p-3 shadow-sm">
+                <div className="rounded-3xl border border-[var(--ds-border)] bg-neutral-50/50 p-3 shadow-sm">
                   <Input.TextArea
                     value={inputValue}
                     onChange={(e) => setInputValue(e.target.value)}
@@ -653,7 +917,7 @@ export default function HomePage() {
                     }}
                     placeholder="给 ChatOne 发送消息"
                     variant="borderless"
-                    autoSize={{ minRows: 1, maxRows: 6 }}
+                    autoSize={{ minRows: 2, maxRows: 8 }}
                     className="!px-1 !text-[15px] placeholder:text-neutral-400"
                   />
                   <div className="mt-2 flex flex-wrap items-center justify-between gap-2">
@@ -706,11 +970,9 @@ export default function HomePage() {
                     </div>
                   </div>
                 </div>
-                {import.meta.env.DEV && (
+                <p className="m-0 py-2 text-center text-[11px] text-neutral-500">
-                  <Typography.Text type="secondary" className="mt-2 block text-center text-[11px]">
+                  内容由 AI 生成，请注意核实
-                    W:{viewportWidth}px · {isMobile ? "mobile" : "desktop"}
+                </p>
-                  </Typography.Text>
-                )}
               </div>
             </div>
           </div>