Merge remote main and reconcile agent refresh with ongoing chats

tests/e2e/fixtures/teacher-preview-layout.tsx

@@ -9,35 +9,52 @@ import '../../../src/pages/Chat/classroom-workspace.css';
 // window is launched, and no user project, provider, or live Host API is used.
 export function Layout() {
   const [bubble, setBubble] = useState<HTMLDivElement | null>(null);
-  const [visible, setVisible] = useState(true);
+  const [introduction, setIntroduction] = useState<HTMLDivElement | null>(null);
+  const [visible, setVisible] = useState(!new URLSearchParams(location.search).has('quiet'));
   const [open, setOpen] = useState(false);
   const [width, setWidth] = useState(508);
   const [long, setLong] = useState(true);
-  const count = Number(new URLSearchParams(location.search).get('agents') ?? 0);
+  const [count, setCount] = useState(Number(new URLSearchParams(location.search).get('agents') ?? 0));
+  const [refreshing, setRefreshing] = useState(false);
+  const [refreshStatus, setRefreshStatus] = useState<'idle' | 'success' | 'error'>('idle');
   const [selected, setSelected] = useState(0);
   const agents = Array.from({ length: count }, (_, index) => ({
     teacher_id: `agent-${index}`, version: index + 1, is_default: index === 0,
     definition: { config_id: `agent-${index}`, name: `智能体${index + 1}`, avatar_id: 'avatar-06',
+      description: `我是智能体${index + 1}，陪你把脑洞变成小作品。一起发现有趣的问题，也一起想清楚下一步怎么做。`,
       icon_url: new URLSearchParams(location.search).has('icons') ? `https://yuxi.example.test/api/storage/public/images/agent-${index}.png` : undefined },
   }));
   const companion = {
-    agents, selectedAgent: agents[selected],
+    agents, unreadAgentIds: [], selectedAgent: agents[selected],
     definition: agents[selected]?.definition ?? { name: '编程老师', avatar_id: 'avatar-06' },
     invitation: visible ? { response: long ? '你刚才说想做一个宠物游戏。我们一起想想，什么样的小动作，会让你愿意一直陪它玩下去？可以先挑一个最想试的想法。' : '有什么编程问题想一起讨论？' } : null,
     welcome: null, enabled: true, loading: false, checking: false, error: null,
+    refreshing, refreshStatus,
+    refresh: async () => {
+      setRefreshing(true);
+      setRefreshStatus('idle');
+      await new Promise((resolve) => window.setTimeout(resolve, 100));
+      setCount((current) => current + 1);
+      setRefreshStatus('success');
+      setRefreshing(false);
+    },
+    reloadCatalog: async () => {},
     dismiss: () => setVisible(false),
   } as ComponentProps<typeof TeacherCompanion>['companion'];
   return <div className="classroom-workspace flex h-screen flex-col bg-white">
     <header className="relative z-50 flex h-10 shrink-0 items-center justify-end border-b px-3" data-testid="coding-conversation-header">
       <span className="mr-auto min-w-0 truncate text-xs">布局测试项目 › hello</span>
-      <TeacherCompanion companion={companion} open={open} onOpen={(id) => { if (id) setSelected(agents.findIndex((item) => item.teacher_id === id)); setOpen(!open); }} bubbleRef={setBubble} />
+      <TeacherCompanion companion={companion} open={open}
+        onOpen={(id) => { if (id) setSelected(agents.findIndex((item) => item.teacher_id === id)); setOpen(true); }}
+        onToggle={(id) => { if (!id || id === agents[selected]?.teacher_id) setOpen(!open); else { setSelected(agents.findIndex((item) => item.teacher_id === id)); setOpen(true); } }}
+        bubbleRef={setBubble} introductionRef={setIntroduction} />
       <span data-testid="window-controls" className="w-[132px] shrink-0 text-center text-xs">— □ ×</span>
     </header>
     <div className="relative flex min-h-0 flex-1" data-testid="coding-chat-panel" data-consultation-open={open}>
       <main className="flex min-w-0 flex-1 flex-col">
         <div className="classroom-tabs" role="tablist"><button role="tab">操作对话</button><button role="tab" aria-selected="true">作品</button></div>
         <div className="classroom-work-view flex min-h-0 flex-1 flex-col p-5" data-testid="work-view">
-          <AgentBrowserPanel projectId="layout-fixture" embedded open teacherBubble={bubble} onOpenChange={() => {}} />
+          <AgentBrowserPanel projectId="layout-fixture" embedded open teacherBubble={bubble} teacherIntroduction={introduction} onOpenChange={() => {}} />
         </div>
       </main>
       {open && <aside id="coding-consultation-dock" className="classroom-consultation-dock consultation-pane shrink-0 border-l p-5" style={{ width }}>