chore: 移除 visx 图表库依赖

- 删除 src/components/VisxPieChart/ 组件（无引用）
- 清理 DataVisualizationComponents.js 中的 visx 词云实现
- 词云功能统一使用 ECharts 实现
- 卸载 @visx/visx、@visx/responsive 等相关包（共 72 个）

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/views/LimitAnalyse/components/DataVisualizationComponents.js

@@ -1,4 +1,4 @@
-import React, { useMemo, useState, useEffect, useRef } from 'react';
+import React, { useMemo } from 'react';
 import {
     Box,
     Card,
@@ -50,10 +50,6 @@ import {
     Treemap,
     Area, AreaChart,
 } from 'recharts';
-// 词云库 - 支持两种实现
-import { Wordcloud } from '@visx/wordcloud';
-import { scaleLog } from '@visx/scale';
-import { Text as VisxText } from '@visx/text';
 import ReactECharts from 'echarts-for-react';
 import 'echarts-wordcloud';
 // 颜色配置
@@ -65,97 +61,7 @@ const CHART_COLORS = [
 // 词云颜色常量
 const WORDCLOUD_COLORS = ['#FF6B6B', '#4ECDC4', '#45B7D1', '#96CEB4', '#FFEEAD'];
 
-// ==================== 词云组件实现 1: @visx/wordcloud ====================
-// 使用 SVG 渲染，React 18 原生支持，配置灵活
-const VisxWordCloud = ({ data }) => {
-    const [dimensions, setDimensions] = useState({ width: 0, height: 400 });
-    const containerRef = useRef(null);
-
-    // 监听容器尺寸变化
-    useEffect(() => {
-        if (!containerRef.current) return;
-
-        const updateDimensions = () => {
-            if (containerRef.current) {
-                setDimensions({
-                    width: containerRef.current.offsetWidth,
-                    height: 400
-                });
-            }
-        };
-
-        updateDimensions();
-        const resizeObserver = new ResizeObserver(updateDimensions);
-        resizeObserver.observe(containerRef.current);
-
-        return () => resizeObserver.disconnect();
-    }, []);
-
-    if (!data || data.length === 0) {
-        return (
-            <Center h="400px">
-                <VStack>
-                    <Text color="gray.500">暂无词云数据</Text>
-                </VStack>
-            </Center>
-        );
-    }
-
-    const words = data.slice(0, 100).map(item => ({
-        name: item.name || item.text,
-        value: item.value || item.count || 1
-    }));
-
-    // 计算字体大小比例
-    const fontScale = scaleLog({
-        domain: [
-            Math.min(...words.map(w => w.value)),
-            Math.max(...words.map(w => w.value))
-        ],
-        range: [16, 80],
-    });
-
-    const fontSizeSetter = (datum) => fontScale(datum.value);
-
-    return (
-        <Box ref={containerRef} h="400px" w="100%">
-            {dimensions.width > 0 && (
-                <svg width={dimensions.width} height={dimensions.height}>
-                    <Wordcloud
-                        words={words}
-                        width={dimensions.width}
-                        height={dimensions.height}
-                        fontSize={fontSizeSetter}
-                        font="Microsoft YaHei, sans-serif"
-                        padding={3}
-                        spiral="archimedean"
-                        rotate={0}
-                        random={() => 0.5}
-                    >
-                        {(cloudWords) =>
-                            cloudWords.map((w, i) => (
-                                <VisxText
-                                    key={w.text}
-                                    fill={WORDCLOUD_COLORS[i % WORDCLOUD_COLORS.length]}
-                                    textAnchor="middle"
-                                    transform={`translate(${w.x}, ${w.y}) rotate(${w.rotate})`}
-                                    fontSize={w.size}
-                                    fontFamily={w.font}
-                                    fontWeight="bold"
-                                >
-                                    {w.text}
-                                </VisxText>
-                            ))
-                        }
-                    </Wordcloud>
-                </svg>
-            )}
-        </Box>
-    );
-};
-
-// ==================== 词云组件实现 2: ECharts Wordcloud ====================
-// 使用 Canvas 渲染，内置交互效果（tooltip、emphasis），配置简单
+// 词云组件 - 使用 ECharts 实现
 const EChartsWordCloud = ({ data }) => {
     if (!data || data.length === 0) {
         return (
@@ -216,9 +122,8 @@ const EChartsWordCloud = ({ data }) => {
     );
 };
 
-// ==================== 词云组件包装器 ====================
-// 统一接口，支持切换两种实现方式
-const WordCloud = ({ data, engine = 'echarts' }) => {
+// 词云组件
+const WordCloud = ({ data }) => {
     if (!data || data.length === 0) {
         return (
             <Center h="400px">
@@ -229,8 +134,7 @@ const WordCloud = ({ data, engine = 'echarts' }) => {
         );
     }
 
-    // 根据 engine 参数选择实现方式
-    return engine === 'visx' ? <VisxWordCloud data={data} /> : <EChartsWordCloud data={data} />;
+    return <EChartsWordCloud data={data} />;
 };
 
 // 板块热力图组件