feat: add Notifications full page with sidebar filter

apps/admin/src/App.tsx

@@ -25,6 +25,7 @@ import RolesPage from './pages/Roles';
 import PermissionsPage from './pages/Permissions';
 import AttendancePage from './pages/Attendance';
 import TeacherWorkspacePage from './pages/TeacherWorkspace';
+import NotificationsPage from './pages/Notifications';
 import PermissionRoute from './components/PermissionRoute';
 
 const PrivateRoute: React.FC<{ children: React.ReactNode }> = ({ children }) => {
@@ -230,6 +231,14 @@ const App: React.FC = () => {
                   </PermissionRoute>
                 }
               />
+
+              <Route path="/notifications" element={
+                <PrivateRoute>
+                  <MainLayout />
+                </PrivateRoute>
+              }>
+                <Route index element={<NotificationsPage />} />
+              </Route>
             </Route>
           </Routes>
         </BrowserRouter>

apps/admin/src/pages/Notifications/index.tsx

@@ -0,0 +1,183 @@
+import React, { useState, useEffect } from 'react';
+import { List, Typography, Menu, Layout, Button, Empty, Spin, Space } from 'antd';
+import {
+  BellOutlined,
+  DollarOutlined,
+  HomeOutlined,
+  TeamOutlined,
+  SettingOutlined,
+} from '@ant-design/icons';
+import { useNavigate } from 'react-router-dom';
+import api from '../../api';
+
+const { Sider, Content } = Layout;
+
+interface NotificationItem {
+  id: number;
+  type: string;
+  title: string;
+  content: string;
+  link: string | null;
+  isRead: boolean;
+  createdAt: string;
+}
+
+const typeMap: Record<string, { label: string; icon: React.ReactNode }> = {
+  bill_generated: { label: '账单', icon: <DollarOutlined /> },
+  bill_paid: { label: '账单', icon: <DollarOutlined /> },
+  check_in: { label: '入住', icon: <HomeOutlined /> },
+  check_out: { label: '退宿', icon: <HomeOutlined /> },
+  deposit_due: { label: '押金', icon: <DollarOutlined /> },
+  deposit_refunded: { label: '押金', icon: <DollarOutlined /> },
+  class_change: { label: '班级', icon: <TeamOutlined /> },
+  schedule_conflict: { label: '排课', icon: <BellOutlined /> },
+  announcement: { label: '公告', icon: <SettingOutlined /> },
+};
+
+function timeAgo(dateStr: string): string {
+  const diff = Date.now() - new Date(dateStr).getTime();
+  const mins = Math.floor(diff / 60000);
+  if (mins < 1) return '刚刚';
+  if (mins < 60) return `${mins}分钟前`;
+  const hours = Math.floor(mins / 60);
+  if (hours < 24) return `${hours}小时前`;
+  const days = Math.floor(hours / 24);
+  if (days < 7) return `${days}天前`;
+  return new Date(dateStr).toLocaleDateString('zh-CN');
+}
+
+const NotificationsPage: React.FC = () => {
+  const [notifications, setNotifications] = useState<NotificationItem[]>([]);
+  const [filter, setFilter] = useState('all');
+  const [loading, setLoading] = useState(false);
+  const navigate = useNavigate();
+
+  const fetchData = async () => {
+    setLoading(true);
+    try {
+      const data = await api.get('/notifications?limit=50') as unknown as NotificationItem[];
+      setNotifications(data);
+    } catch { /* ignore */ }
+    setLoading(false);
+  };
+
+  useEffect(() => {
+    fetchData();
+  }, []);
+
+  const handleClick = async (item: NotificationItem) => {
+    if (!item.isRead) {
+      try {
+        await api.put(`/notifications/${item.id}/read`);
+        setNotifications((prev) =>
+          prev.map((n) => (n.id === item.id ? { ...n, isRead: true } : n)),
+        );
+      } catch { /* ignore */ }
+    }
+    if (item.link) navigate(item.link);
+  };
+
+  const handleMarkAll = async () => {
+    try {
+      await api.put('/notifications/read-all');
+      setNotifications((prev) =>
+        prev.map((n) => ({ ...n, isRead: true })),
+      );
+    } catch { /* ignore */ }
+  };
+
+  const filtered = filter === 'all'
+    ? notifications
+    : notifications.filter((n) => n.type === filter);
+
+  return (
+    <Layout style={{ minHeight: '100%', background: '#fff' }}>
+      <Sider width={180} style={{ background: '#fff', borderRight: '1px solid #f0f0f0' }}>
+        <Menu
+          mode="inline"
+          selectedKeys={[filter]}
+          onClick={({ key }) => setFilter(key)}
+          items={[
+            { key: 'all', icon: <BellOutlined />, label: '全部' },
+            { key: 'bill_generated', icon: <DollarOutlined />, label: '账单' },
+            { key: 'check_in', icon: <HomeOutlined />, label: '入住' },
+            { key: 'class_change', icon: <TeamOutlined />, label: '班级' },
+            { key: 'announcement', icon: <SettingOutlined />, label: '公告' },
+          ]}
+        />
+      </Sider>
+      <Content style={{ padding: 24 }}>
+        <div style={{ display: 'flex', justifyContent: 'space-between', marginBottom: 16 }}>
+          <Typography.Title level={4} style={{ margin: 0 }}>通知中心</Typography.Title>
+          <Button onClick={handleMarkAll}>全部已读</Button>
+        </div>
+        <Spin spinning={loading}>
+          {filtered.length === 0 ? (
+            <Empty description="暂无通知" />
+          ) : (
+            <List
+              dataSource={filtered}
+              renderItem={(item) => {
+                const meta = typeMap[item.type] || { label: item.type, icon: <BellOutlined /> };
+                return (
+                  <List.Item
+                    onClick={() => handleClick(item)}
+                    style={{
+                      cursor: 'pointer',
+                      padding: '16px 0',
+                      backgroundColor: item.isRead ? 'transparent' : '#f0f7ff',
+                    }}
+                  >
+                    <List.Item.Meta
+                      avatar={
+                        <div
+                          style={{
+                            width: 40,
+                            height: 40,
+                            borderRadius: '50%',
+                            background: '#f0f0f0',
+                            display: 'flex',
+                            alignItems: 'center',
+                            justifyContent: 'center',
+                          }}
+                        >
+                          {meta.icon}
+                        </div>
+                      }
+                      title={
+                        <Space>
+                          <Typography.Text
+                            strong={!item.isRead}
+                            style={{ fontSize: 15 }}
+                          >
+                            {item.title}
+                          </Typography.Text>
+                          <Typography.Text type="secondary" style={{ fontSize: 12 }}>
+                            {timeAgo(item.createdAt)}
+                          </Typography.Text>
+                        </Space>
+                      }
+                      description={
+                        item.content && (
+                          <Typography.Paragraph
+                            type="secondary"
+                            ellipsis={{ rows: 1 }}
+                            style={{ marginBottom: 0 }}
+                          >
+                            {item.content}
+                          </Typography.Paragraph>
+                        )
+                      }
+                    />
+                  </List.Item>
+                );
+              }}
+            />
+          )}
+        </Spin>
+      </Content>
+    </Layout>
+  );
+};
+
+export default NotificationsPage;