fix(agent): 切换会话不再重挂载整页、不重播入场动画

控制台主内容区按 pathname 重挂载,每换一个会话整页透明 + 模糊再淡入,
左栏滚动、分页、展开状态全部丢失。智能体列表页与会话页共用一个 key。

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Cxwgnn2pbzQ7rXv3rq7fei

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>