diff --git a/frontend-web/public/runtime-config.js b/frontend-web/public/runtime-config.js
index f44dd78f..b3326576 100644
--- a/frontend-web/public/runtime-config.js
+++ b/frontend-web/public/runtime-config.js
@@ -8,10 +8,10 @@
 // 5. 布尔开关也用字符串形式填写："true" / "false"。
 window.__CM_RUNTIME_CONFIG__ = {
   // DeerFlow Gateway 地址：前端自有后端接口，例如 /api/agents、/api/auth、/api/threads 等。
-  // VITE_BACKEND_BASE_URL: "http://10.19.200.5:2026",
+  VITE_BACKEND_BASE_URL: "http://10.19.200.5:2026",
 
   // LangGraph 流式对话接口地址：普通问答、智能体对话等流式能力使用。
-  // VITE_LANGGRAPH_BASE_URL: "http://10.19.200.5:2026/api",
+  VITE_LANGGRAPH_BASE_URL: "http://10.19.200.5:2026/api",
 
   // Canvas/AI 写作独立 LangGraph 地址：为空时前端会回退使用 VITE_LANGGRAPH_BASE_URL。
   VITE_CANVAS_LANGGRAPH_BASE_URL: "",
diff --git a/frontend-web/src/components/page-sidebar-dark.tsx b/frontend-web/src/components/page-sidebar-dark.tsx
index 4851a5d5..2670f137 100644
--- a/frontend-web/src/components/page-sidebar-dark.tsx
+++ b/frontend-web/src/components/page-sidebar-dark.tsx
@@ -1,6 +1,5 @@
 import { useEffect, useRef, useState } from "react";
 import { useNavigate, useLocation } from "react-router-dom";
-import { PanelLeftOpen, PanelLeftClose } from "lucide-react";
 
 import { getStoredAuth } from "@/core/auth";
 import { isWujieEnv } from "@/core/embed/wujie";
@@ -13,13 +12,7 @@ import {
 import { useSidebarMenuItems } from "@/core/page-layout/use-sidebar-menu";
 import './page-sdebar.css'
 
-type PageSidebarDarkProps = {
-  /** 是否收起（true 时只渲染左下角浮动入口，sidebar 主体隐藏） */
-  collapsed: boolean;
-  onToggleCollapsed: () => void;
-};
-
-export function PageSidebarDark({ collapsed, onToggleCollapsed }: PageSidebarDarkProps) {
+export function PageSidebarDark() {
   const isAdmin = getStoredAuth()?.system_role === "admin";
   const visibleMenuItems = useSidebarMenuItems(!!isAdmin);
   const inWujieEnv = isWujieEnv();
@@ -196,22 +189,6 @@ export function PageSidebarDark({ collapsed, onToggleCollapsed }: PageSidebarDar
     </div>
   );
 
-  // collapsed 状态：sidebar 主体完全消失（包括占据的宽度），只渲染左下角浮动入口
-  if (collapsed) {
-    return (
-      <button
-        type="button"
-        title="展开侧边栏"
-        aria-label="展开侧边栏"
-        className="sidebar-collapse-btn sidebar-collapse-btn--floating"
-        onClick={onToggleCollapsed}
-      >
-        <PanelLeftOpen className="sidebar-collapse-btn__icon" aria-hidden="true" />
-        <span className="sidebar-collapse-btn__label">收起面板</span>
-      </button>
-    );
-  }
-
   return (
     <aside className={`sidebar-contnet ${inWujieEnv ? "" : "sidebar-contnet--top-submenu"}`}>
       <div className="sidebar-contents">
@@ -243,18 +220,6 @@ export function PageSidebarDark({ collapsed, onToggleCollapsed }: PageSidebarDar
             </div>
           </div>
         ))}
-
-        {/* 底部"收起面板"按钮：独立样式，mt-auto 推到底 */}
-        <button
-          type="button"
-          title="收起侧边栏"
-          aria-label="收起侧边栏"
-          className="sidebar-collapse-btn sidebar-collapse-btn--inline"
-          onClick={onToggleCollapsed}
-        >
-          <PanelLeftClose className="sidebar-collapse-btn__icon" aria-hidden="true" />
-          <span className="sidebar-collapse-btn__label">收起面板</span>
-        </button>
       </div>
     </aside>
   );
diff --git a/frontend-web/src/components/workspace/compact-welcome.tsx b/frontend-web/src/components/workspace/compact-welcome.tsx
index 9bd26eb3..1b840da3 100644
--- a/frontend-web/src/components/workspace/compact-welcome.tsx
+++ b/frontend-web/src/components/workspace/compact-welcome.tsx
@@ -1,6 +1,7 @@
 "use client";
 
 import { cn } from "@/lib/utils";
+import { useDisplayDesensitizer } from "@/core/sensitive-words/use-display-desensitizer";
 
 /**
  * 紧凑模式（正常 App）新对话落地页的品牌欢迎块 —— 按 CM-assistant 参考图重画。
@@ -8,6 +9,8 @@ import { cn } from "@/lib/utils";
  * 非紧凑模式仍用 <Welcome/>，本组件不参与。
  */
 export function CompactWelcome({ className }: { className?: string }) {
+  const desensitizeText = useDisplayDesensitizer();
+
   return (
     <div
       className={cn(
@@ -33,13 +36,13 @@ export function CompactWelcome({ className }: { className?: string }) {
           }}
         >
           <span className="text-2xl font-black tracking-wide text-white italic">
-            CM
+            {desensitizeText("CM")}
           </span>
         </div>
       </div>
 
       <h1 className="flex items-center justify-center text-2xl font-bold tracking-tight text-foreground/90">
-        欢迎使用CM助手
+        {desensitizeText("欢迎使用CM助手")}
       </h1>
       <p className="text-muted-foreground mx-auto mt-2 max-w-sm text-xs leading-relaxed">
         基于先进深度推理模型，为您提供高效的市场分析、专业报告撰写、调研设计与协同脑暴支持。
diff --git a/frontend-web/src/components/workspace/welcome.tsx b/frontend-web/src/components/workspace/welcome.tsx
index 4e8aae3b..c72bbcd4 100644
--- a/frontend-web/src/components/workspace/welcome.tsx
+++ b/frontend-web/src/components/workspace/welcome.tsx
@@ -3,7 +3,8 @@
 import { useSearchParams } from "next/navigation";
 import { useMemo } from "react";
 
-import { useI18n } from "@/core/i18n/hooks";
+import { useI18n } from "@/core/i18n/hooks";
+import { useDisplayDesensitizer } from "@/core/sensitive-words/use-display-desensitizer";
 import { cn } from "@/lib/utils";
 
 import { AuroraText } from "../ui/aurora-text";
@@ -15,7 +16,8 @@ export function Welcome({
   className?: string;
   mode?: "ultra" | "pro" | "thinking" | "flash";
 }) {
-  const { t } = useI18n();
+  const { t } = useI18n();
+  const desensitizeText = useDisplayDesensitizer();
   const searchParams = useSearchParams();
   const isUltra = useMemo(() => mode === "ultra", [mode]);
   const colors = useMemo(() => {
@@ -36,7 +38,7 @@ export function Welcome({
           t.welcome.createYourOwnSkill
         ) : (
           <div className="flex items-center">
-            <AuroraText colors={colors}>{t.welcome.greeting}</AuroraText>
+            <AuroraText colors={colors}>{desensitizeText(t.welcome.greeting)}</AuroraText>
           </div>
         )}
       </div>
diff --git a/frontend-web/src/core/sensitive-words/use-display-desensitizer.ts b/frontend-web/src/core/sensitive-words/use-display-desensitizer.ts
new file mode 100644
index 00000000..41008979
--- /dev/null
+++ b/frontend-web/src/core/sensitive-words/use-display-desensitizer.ts
@@ -0,0 +1,19 @@
+import { useMemo } from "react";
+
+import { desensitize, makeDesensitizer } from "@/lib/desensitize";
+import { useSensitiveWords, wordsToMap } from "@/strategy-components/api/sensitive-words";
+
+/**
+ * 返回用于界面静态文本的脱敏函数。
+ *
+ * 与导航菜单使用同一份敏感词查询：后台存在配置时以后台为准，未配置时回退到内置种子。
+ * Hook 订阅 React Query 缓存，管理员保存敏感词后，使用它的导航/欢迎区会自动重新渲染。
+ */
+export function useDisplayDesensitizer(): (text: string) => string {
+  const { data: words = [] } = useSensitiveWords();
+
+  return useMemo(
+    () => (words.length > 0 ? makeDesensitizer(wordsToMap(words)) : desensitize),
+    [words],
+  );
+}
diff --git a/frontend-web/src/pages/PageRoutes.tsx b/frontend-web/src/pages/PageRoutes.tsx
index 208f82bc..54b98a5c 100644
--- a/frontend-web/src/pages/PageRoutes.tsx
+++ b/frontend-web/src/pages/PageRoutes.tsx
@@ -31,6 +31,8 @@ function PageLayout() {
   const location = useLocation();
   const { theme } = useTheme();
   const isDark = theme === "dark";
+  // 深色导航侧栏不提供收起入口，始终保持展开，避免切换主题后沿用浅色模式的收起状态。
+  const sidebarCollapsed = isDark ? false : collapsed;
   // 浅色非嵌入：侧边栏为新版「二级导航图标卡片」窄栏(96px)；wujie 嵌入仍走旧版手风琴(64/256px)。
   const inWujie = useMemo(() => isWujieEnv(), []);
   const lightNarrowSidebar = !isDark && !inWujie;
@@ -74,17 +76,14 @@ function PageLayout() {
   return (
     <RoundtableJobNotifier>
     <div className="h-full flex flex-col bg-muted/20">
-      {pageSidebarAllowed && <Header collapsed={collapsed} />}
+      {pageSidebarAllowed && <Header collapsed={sidebarCollapsed} />}
       <div className="flex flex-1 overflow-hidden">
         {pageSidebarAllowed && (
           isDark ? (
-            <PageSidebarDark
-              collapsed={collapsed}
-              onToggleCollapsed={() => setCollapsed((prev) => !prev)}
-            />
+            <PageSidebarDark />
           ) : (
             <PageSidebar
-              collapsed={collapsed}
+              collapsed={sidebarCollapsed}
               onToggleCollapsed={() => setCollapsed((prev) => !prev)}
             />
           )
@@ -94,10 +93,8 @@ function PageLayout() {
             !pageSidebarAllowed
               ? ""
               : isDark
-                // 深色 sidebar：展开 118px（10 + 98 + 10 gap），收起 = 0 sidebar 完全消失，
-                // 只剩左下角浮动按钮（fixed，叠在 main 上不影响布局）。
-                // 不加 transition：transition + sidebar 立刻 unmount 不同步会抽搐
-                ? (collapsed ? "pl-0" : "pl-[118px]")
+                // 深色 sidebar 固定展开 118px（10 + 98 + 10 gap）。
+                ? "pl-[118px]"
                 : lightNarrowSidebar
                   // 浅色新版窄栏：展开三级列时 96→236px，主内容左内边距随之过渡
                   ? `transition-[padding] duration-300 ${lightExpanded ? "pl-[236px]" : "pl-[96px]"}`
@@ -111,7 +108,7 @@ function PageLayout() {
               path="workspace/*"
               element={
                 <WorkspaceRoutes
-                  pageSidebarCollapsed={collapsed}
+                  pageSidebarCollapsed={sidebarCollapsed}
                   pageSidebarHidden={!pageSidebarAllowed}
                   headerHidden={!pageSidebarAllowed}
                   compactWorkspaceSidebar={pageSidebarAllowed}
diff --git a/frontend-web/src/strategy-components/Header.tsx b/frontend-web/src/strategy-components/Header.tsx
index 8be697a8..3ebee2a5 100644
--- a/frontend-web/src/strategy-components/Header.tsx
+++ b/frontend-web/src/strategy-components/Header.tsx
@@ -22,6 +22,7 @@ import {
   type MenuItem,
 } from "@/core/page-layout/sidebar-menu";
 import { useSidebarMenuItems } from "@/core/page-layout/use-sidebar-menu";
+import { useDisplayDesensitizer } from "@/core/sensitive-words/use-display-desensitizer";
 import { cn } from "@/lib/utils";
 
 import { useTheme } from "../contexts/ThemeContext";
@@ -53,6 +54,7 @@ const Header = ({ collapsed }: HeaderProps) => {
   const auth = getStoredAuth();
   const isAdmin = auth?.system_role === "admin";
   const visibleMenuItems = useSidebarMenuItems(!!isAdmin);
+  const desensitizeText = useDisplayDesensitizer();
   const { data: myPosition } = useMyPosition();
   const positionName = myPosition?.name?.trim() || "";
 
@@ -236,7 +238,7 @@ const Header = ({ collapsed }: HeaderProps) => {
             </div>
 
             {/* 中：CM助手（落在背景图发光基座上，纯文字无图标） */}
-            <div className="header-center-title">CM业务中心</div>
+            <div className="header-center-title">{desensitizeText("CM业务中心")}</div>
 
             {/* 右分区（flex-1）：菜单靠左贴近中间基座，操作区靠最右 */}
             <div className="flex h-full min-w-0 flex-1 items-center justify-between">
@@ -262,7 +264,7 @@ const Header = ({ collapsed }: HeaderProps) => {
                   <FileText className="h-4 w-4 text-white" />
                 </div>
                 <span className="whitespace-nowrap text-base font-semibold text-white">
-                  CM业务中心
+                  {desensitizeText("CM业务中心")}
                 </span>
               </div>
               <nav className="light-topnav" aria-label="一级菜单">
@@ -289,7 +291,7 @@ const Header = ({ collapsed }: HeaderProps) => {
               </div>
               {!collapsed && (
                 <span className="text-sm font-semibold text-white">
-                  CM业务中心
+                  {desensitizeText("CM业务中心")}
                 </span>
               )}
             </div>