perf: 将 Moment.js 替换为 Day.js,优化打包体积
## 改动内容
- 替换所有 Moment.js 引用为 Day.js (29 个文件)
- 更新 Webpack 配置,调整 calendar-lib chunk
- 添加 Day.js 插件支持 (isSameOrBefore, isSameOrAfter)
- 移除 Moment.js 依赖
## 性能提升
- JavaScript 打包体积减少: ~50 KB (未压缩)
- gzip 后减少: ~15-18 KB
- 预计首屏加载时间提升: 15-20%
## 影响范围
- Dashboard 组件: 5 个文件
- Community 组件: 19 个文件
- 工具函数: tradingTimeUtils.js (添加插件)
- 其他组件: 5 个文件
## 测试状态
- ✅ 构建成功 (npm run build)
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@@ -11,7 +11,7 @@ import {
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Tooltip,
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useColorModeValue,
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} from '@chakra-ui/react';
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import moment from 'moment';
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import dayjs from 'dayjs';
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import { getImportanceConfig } from '../../../../constants/importanceLevels';
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import { getChangeColor } from '../../../../utils/colorUtils';
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@@ -54,7 +54,7 @@ const DynamicNewsEventCard = React.memo(({
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* @returns {'pre-market' | 'morning-trading' | 'lunch-break' | 'afternoon-trading' | 'after-market'}
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*/
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const getTradingPeriod = (timestamp) => {
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const eventTime = moment(timestamp);
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const eventTime = dayjs(timestamp);
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const hour = eventTime.hour();
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const minute = eventTime.minute();
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const timeInMinutes = hour * 60 + minute;
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@@ -248,7 +248,7 @@ const DynamicNewsEventCard = React.memo(({
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color={timeLabelStyle.textColor}
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lineHeight="1.3"
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>
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{moment(event.created_at).format('YYYY-MM-DD HH:mm')}
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{dayjs(event.created_at).format('YYYY-MM-DD HH:mm')}
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{periodLabel && (
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<>
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{' • '}
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