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/stores/userStore.ts

@@ -0,0 +1,69 @@
+import { create } from 'zustand';
+import { persist } from 'zustand/middleware';
+import type { IUserInfo, ITenant } from '@/interfaces/database/user-setting';
+import type { ITenantInfo } from '@/interfaces/database/knowledge';
+
+interface UserState {
+  // 用户信息
+  userInfo: IUserInfo | null;
+  // 租户信息
+  tenantInfo: ITenantInfo | null;
+  // 租户列表
+  tenantList: ITenant[];
+  // 加载状态
+  isLoading: boolean;
+  // 错误信息
+  error: string | null;
+  
+  // Actions
+  setUserInfo: (userInfo: IUserInfo | null) => void;
+  setTenantInfo: (tenantInfo: ITenantInfo | null) => void;
+  setTenantList: (tenantList: ITenant[]) => void;
+  setLoading: (loading: boolean) => void;
+  setError: (error: string | null) => void;
+  clearUserData: () => void;
+  
+  // 初始化用户数据
+  initializeUserData: () => Promise<void>;
+}
+
+export const useUserStore = create<UserState>()(
+  persist(
+    (set, get) => ({
+      // 初始状态
+      userInfo: null,
+      tenantInfo: null,
+      tenantList: [],
+      isLoading: false,
+      error: null,
+
+      // Actions
+      setUserInfo: (userInfo) => set({ userInfo }),
+      setTenantInfo: (tenantInfo) => set({ tenantInfo }),
+      setTenantList: (tenantList) => set({ tenantList }),
+      setLoading: (isLoading) => set({ isLoading }),
+      setError: (error) => set({ error }),
+      
+      clearUserData: () => set({
+        userInfo: null,
+        tenantInfo: null,
+        tenantList: [],
+        error: null,
+      }),
+
+      // 初始化用户数据方法
+      initializeUserData: async () => {
+        // 初始化时会在 UserDataProvider 中调用
+      },
+    }),
+    {
+      name: 'user-store', // 持久化存储的key
+      partialize: (state) => ({
+        // 只持久化这些字段
+        userInfo: state.userInfo,
+        tenantInfo: state.tenantInfo,
+        tenantList: state.tenantList,
+      }),
+    }
+  )
+);