perf(Calendar): FullCalendar 懒加载与代码分割优化

- HeroPanel: 使用 React.lazy + Suspense 懒加载 FullCalendarPro
- craco.config: 添加 @fullcalendar 独立分包配置（~15KB gzip）
- event mock: 生成连续概念数据（2-4天同概念）便于测试跨天效果
- LimitAnalyse: 文案优化（高潮→高涨）
- ForceGraphView: 层级图优化

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

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

src/views/Community/components/HeroPanel.js

@@ -2,7 +2,7 @@
 // 综合日历面板：融合涨停分析 + 投资日历
 // 点击日期弹出详情弹窗（TAB切换历史涨停/未来事件）
 
-import React, { useEffect, useState, useCallback, useMemo, memo } from 'react';
+import React, { useEffect, useState, useCallback, useMemo, memo, lazy, Suspense } from 'react';
 import { useSelector, useDispatch } from 'react-redux';
 import { loadWatchlist, toggleWatchlist } from '@store/slices/stockSlice';
 import {
@@ -56,7 +56,10 @@ import { getApiBase } from '@utils/apiConfig';
 import ReactMarkdown from 'react-markdown';
 import dayjs from 'dayjs';
 import KLineChartModal from '@components/StockChart/KLineChartModal';
-import { FullCalendarPro } from '@components/Calendar';
+// 懒加载 FullCalendar（约 60KB gzip，延迟加载提升首屏性能）
+const FullCalendarPro = lazy(() =>
+  import('@components/Calendar').then(module => ({ default: module.FullCalendarPro }))
+);
 import ThemeCometChart from './ThemeCometChart';
 import EventDailyStats from './EventDailyStats';
 
@@ -2477,14 +2480,23 @@ const CombinedCalendar = () => {
           backgroundSize="200% 100%"
         />
 
-        {/* FullCalendar Pro - 炫酷跨天事件条日历 */}
-        <FullCalendarPro
-          data={calendarData}
-          currentMonth={currentMonth}
-          onDateClick={handleDateClick}
-          onMonthChange={handleMonthChange}
-          height="650px"
-        />
+        {/* FullCalendar Pro - 炫酷跨天事件条日历（懒加载） */}
+        <Suspense fallback={
+          <Center h="650px">
+            <VStack spacing={4}>
+              <Spinner size="xl" color="gold" thickness="3px" />
+              <Text color="whiteAlpha.600" fontSize="sm">加载日历组件...</Text>
+            </VStack>
+          </Center>
+        }>
+          <FullCalendarPro
+            data={calendarData}
+            currentMonth={currentMonth}
+            onDateClick={handleDateClick}
+            onMonthChange={handleMonthChange}
+            height="650px"
+          />
+        </Suspense>
 
         {/* 图例说明 */}
         <HStack spacing={4} mt={4} justify="center" flexWrap="wrap">