diff --git a/apps/web/app/components/agent/agent-nav.test.ts b/apps/web/app/components/agent/agent-nav.test.ts
new file mode 100644
index 00000000..27e5b37d
--- /dev/null
+++ b/apps/web/app/components/agent/agent-nav.test.ts
@@ -0,0 +1,17 @@
+import { describe, expect, it } from "vitest";
+import { isAgentPage, outletKey } from "./agent-store.ts";
+
+// 智能体页面切换的状态逻辑:整页重挂载 key、分栏与 URL、草稿、滚动策略、快捷键在智能体页面的行为。
+
+describe("主内容区重挂载 key", () => {
+  it("列表页与各会话页共用一个 key,切换会话不重挂载", () => {
+    expect(outletKey("/console/agent")).toBe("/console/agent");
+    expect(outletKey("/console/agent/0b1c")).toBe("/console/agent");
+    expect(outletKey("/console/agent/9f2e")).toBe(outletKey("/console/agent/0b1c"));
+  });
+  it("其它页面仍按路径重挂载", () => {
+    expect(outletKey("/console/library")).toBe("/console/library");
+    expect(outletKey("/console/agents-x")).toBe("/console/agents-x");
+    expect(isAgentPage("/console/agentx")).toBe(false);
+  });
+});
diff --git a/apps/web/app/components/agent/agent-store.ts b/apps/web/app/components/agent/agent-store.ts
index 78919117..400736fb 100644
--- a/apps/web/app/components/agent/agent-store.ts
+++ b/apps/web/app/components/agent/agent-store.ts
@@ -123,6 +123,17 @@ export function contextFromPath(pathname: string): AgentContext | null {
   }
 }
 
+/** 当前在不在智能体页面(列表页或会话页) */
+export const isAgentPage = (pathname: string) => /^\/console\/agent(\/|$)/.test(pathname);
+
+/**
+ * 控制台主内容区的重挂载 key:智能体列表页与各会话页共用一个 key,
+ * 切换会话不重挂载整页、不重播入场动画,左栏的分栏 / 滚动 / 展开状态保留。
+ */
+export function outletKey(pathname: string): string {
+  return isAgentPage(pathname) ? "/console/agent" : pathname;
+}
+
 export function useAgentDrawer(): State {
   return useSyncExternalStore(
     (l) => {
diff --git a/apps/web/app/routes/console/layout.tsx b/apps/web/app/routes/console/layout.tsx
index 9c101a86..9651bcec 100644
--- a/apps/web/app/routes/console/layout.tsx
+++ b/apps/web/app/routes/console/layout.tsx
@@ -4,6 +4,7 @@ import { useCallback, useEffect, useLayoutEffect, useRef, useState } from "react
 import { Link, Outlet, useLocation, useMatches } from "react-router";
 import { useSession } from "~/api/auth.ts";
 import { AgentDrawer, AgentDrawerTrigger } from "~/components/agent/agent-drawer.tsx";
+import { outletKey } from "~/components/agent/agent-store.ts";
 import { AccountMenu } from "~/components/console/account-menu.tsx";
 import { AgentLauncher, AgentNavEntry } from "~/components/console/agent-launcher.tsx";
 import { ErrorState } from "~/components/console/empty-state.tsx";
@@ -248,7 +249,10 @@ function ConsoleShell({ session }: { session: SessionInfo }) {
 
         {/* 底部留出悬浮按钮的高度,页面末尾的内容能滚到它上面 */}
         <main className={cn("relative flex-1 overflow-x-clip", !wide && "px-4 pt-6 pb-24 md:px-6 md:pt-8")}>
-          <div key={location.pathname} className={cn(!wide && "mx-auto max-w-6xl", "motion-safe:animate-blur-in")}>
+          <div
+            key={outletKey(location.pathname)}
+            className={cn(!wide && "mx-auto max-w-6xl", "motion-safe:animate-blur-in")}
+          >
             <Outlet />
           </div>
         </main>