feat(web): Q3 前端体验优化 — ErrorBoundary + 5 hooks + 共享类型 + i18n 基础

- ErrorBoundary 组件：全局错误捕获与优雅降级
- 提取 5 个自定义 hooks：useCountUp, useDarkMode, useDebouncedValue, usePaginatedData, useApiRequest
- 从 11 个 API 文件提取 PaginatedResponse 共享类型到 api/types.ts
- 统一 API 错误处理（api/errors.ts）
- client.ts 迁移到 axios adapter 模式（替代废弃的 CancelToken）
- 添加 react-i18next 国际化基础设施 + zh-CN 语言包

apps/web/src/hooks/usePaginatedData.ts

@@ -0,0 +1,36 @@
+import { useState, useCallback } from 'react';
+import { message } from 'antd';
+
+interface PaginatedState<T> {
+  data: T[];
+  total: number;
+  page: number;
+  loading: boolean;
+}
+
+export function usePaginatedData<T>(
+  fetchFn: (page: number, pageSize: number, search: string) => Promise<{ data: T[]; total: number }>,
+  pageSize = 20,
+) {
+  const [state, setState] = useState<PaginatedState<T>>({
+    data: [],
+    total: 0,
+    page: 1,
+    loading: false,
+  });
+  const [searchText, setSearchText] = useState('');
+
+  const refresh = useCallback(async (p?: number) => {
+    const targetPage = p ?? state.page;
+    setState(s => ({ ...s, loading: true }));
+    try {
+      const result = await fetchFn(targetPage, pageSize, searchText);
+      setState({ data: result.data, total: result.total, page: targetPage, loading: false });
+    } catch {
+      message.error('加载数据失败');
+      setState(s => ({ ...s, loading: false }));
+    }
+  }, [fetchFn, pageSize, searchText, state.page]);
+
+  return { ...state, searchText, setSearchText, refresh };
+}