Justin Gu
0a205ffbf3
feat: 盘面洞察第四批 — 板块相关性热力图 + 异动雷达 + 量能仪表盘
- 相关性 /hotspots 页内新增「相关性」视图：/board-mac/hotspot-correlation
复用热点历史矩阵缓存，对窗口内活跃板块（每日前 per_day 名并集，按上榜次数
取前 N）两两算日涨跌幅 Pearson 相关；红=同涨同跌（抱团）、绿=跷跷板（轮动），
ECharts 热力图 + 双向色阶 visualMap；无缓存时透传 building 状态
- 异动雷达 /radar：沪深异动流时间线（封板/炸板/大笔买入/逼近涨停…），
每分钟异动密度柱 + 类型筛选 chips（带计数），行点击直达个股弹窗，15s 轮询
- 量能仪表盘并入市场情绪页：两市（上证+深成 5 分钟线）累计成交额曲线
vs 近 5 日同期均值（虚线），标题给出偏离百分比——放量/缩量一眼可辨
- 热点缓存判定重构为 _hotspot_history_or_build 公共入口，correlation 与
hotspot 共用同一构建状态机；新增相关性矩阵回归单测
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