feat(user): add user data management system with global state

- Implement user store with Zustand for global state management
- Create UserDataProvider component to initialize user data on app load
- Add useUserData hook for accessing and managing user data
- Refactor knowledge base list page to use new hooks

src/pages/Dashboard.tsx

@@ -29,6 +29,9 @@ import {
   CheckCircle as CheckCircleIcon,
 } from '@mui/icons-material';
 import { styled } from '@mui/material/styles';
+import KnowledgeGridView from '@/components/KnowledgeGridView';
+import UserDataDebug from '@/components/UserDataDebug';
+import { useNavigate } from 'react-router-dom';
 
 const PageContainer = styled(Box)(({ theme }) => ({
   padding: '1.5rem',
@@ -128,6 +131,96 @@ const mockRecentQueries = [
 
 const Dashboard: React.FC = () => {
   const [timeRange, setTimeRange] = useState('24h');
+  const navigate = useNavigate();
+
+  // 模拟知识库数据
+  const mockKnowledgeBases = [
+    {
+      id: '1',
+      name: '产品文档库',
+      description: '包含所有产品相关的技术文档和用户手册',
+      status: '1',
+      doc_num: 156,
+      chunk_num: 1240,
+      size: 2400000000, // 2.4GB
+      update_date: '2024-01-15',
+      created_by: 'admin',
+      nickname: '管理员',
+      create_date: '2024-01-01',
+      create_time: 1704067200,
+      tenant_id: 'tenant1',
+      token_num: 50000,
+      parser_config: {},
+      parser_id: 'parser1',
+      pipeline_id: 'pipeline1',
+      pipeline_name: 'Default Pipeline',
+      pipeline_avatar: '',
+      permission: 'read',
+      similarity_threshold: 0.8,
+      update_time: 1705305600,
+      vector_similarity_weight: 0.7,
+      embd_id: 'embd1',
+      operator_permission: 1,
+    },
+    {
+      id: '2',
+      name: '客服FAQ',
+      description: '常见问题解答和客服对话记录',
+      status: '1',
+      doc_num: 89,
+      chunk_num: 670,
+      size: 1100000000, // 1.1GB
+      update_date: '2024-01-14',
+      created_by: 'support',
+      nickname: '客服团队',
+      create_date: '2024-01-02',
+      create_time: 1704153600,
+      tenant_id: 'tenant1',
+      token_num: 30000,
+      parser_config: {},
+      parser_id: 'parser1',
+      pipeline_id: 'pipeline1',
+      pipeline_name: 'Default Pipeline',
+      pipeline_avatar: '',
+      permission: 'read',
+      similarity_threshold: 0.8,
+      update_time: 1705219200,
+      vector_similarity_weight: 0.7,
+      embd_id: 'embd1',
+      operator_permission: 1,
+    },
+    {
+      id: '3',
+      name: '法律合规',
+      description: '法律条文、合规要求和相关政策文档',
+      status: '0',
+      doc_num: 234,
+      chunk_num: 1890,
+      size: 3700000000, // 3.7GB
+      update_date: '2024-01-13',
+      created_by: 'legal',
+      nickname: '法务部',
+      create_date: '2024-01-03',
+      create_time: 1704240000,
+      tenant_id: 'tenant1',
+      token_num: 75000,
+      parser_config: {},
+      parser_id: 'parser1',
+      pipeline_id: 'pipeline1',
+      pipeline_name: 'Default Pipeline',
+      pipeline_avatar: '',
+      permission: 'read',
+      similarity_threshold: 0.8,
+      update_time: 1705132800,
+      vector_similarity_weight: 0.7,
+      embd_id: 'embd1',
+      operator_permission: 1,
+    },
+  ];
+
+  const handleSeeAllKnowledgeBases = () => {
+    navigate('/knowledge');
+  };
 
   return (
     <PageContainer>
@@ -253,6 +346,30 @@ const Dashboard: React.FC = () => {
         </Grid>
       </Grid>
 
+      {/* 知识库概览 */}
+      <Card sx={{ border: '1px solid #E5E5E5', mb: 3 }}>
+        <CardContent>
+          <Box display="flex" justifyContent="space-between" alignItems="center" mb={2}>
+            <Typography variant="h6" fontWeight={600}>
+              知识库概览
+            </Typography>
+            <Button 
+              variant="outlined" 
+              size="small"
+              onClick={handleSeeAllKnowledgeBases}
+            >
+              查看全部
+            </Button>
+          </Box>
+          <KnowledgeGridView
+            knowledgeBases={mockKnowledgeBases}
+            maxItems={3}
+            showSeeAll={true}
+            onSeeAll={handleSeeAllKnowledgeBases}
+          />
+        </CardContent>
+      </Card>
+
       {/* 系统状态 */}
       <Grid container spacing={3} sx={{ mb: 3 }}>
         <Grid item xs={12} md={6}>
@@ -362,6 +479,15 @@ const Dashboard: React.FC = () => {
           </TableContainer>
         </CardContent>
       </Card>
+
+      {/* 用户数据调试组件 - 仅在开发环境显示 */}
+      {process.env.NODE_ENV === 'development' && (
+        <Card sx={{ border: '1px solid #E5E5E5', mt: 3 }}>
+          <CardContent>
+            <UserDataDebug />
+          </CardContent>
+        </Card>
+      )}
     </PageContainer>
   );
 };