style(history): clarify event comparison curves

Remove simulation area fills, distinguish scheme curves with dashed lines, and soften the event interval. Improve chart spacing, axis labels, tooltips and the range slider while retaining observed SCADA markers.

Validation: 19 focused HistoryDataPanel tests and scoped ESLint pass in an isolated checkout. Browser chart previews cover wide, compact and mixed flow/SCADA pressure states.

src/components/olmap/core/Controls/HistoryDataPanel.tsx

@@ -26,7 +26,6 @@ import { Close, PlayArrow, Refresh, ShowChart, TableChart } from "@mui/icons-mat
 import { DataGrid, GridColDef } from "@mui/x-data-grid";
 import { zhCN } from "@mui/x-data-grid/locales";
 import ReactECharts from "echarts-for-react";
-import * as echarts from "echarts";
 import "dayjs/locale/zh-cn"; // 引入中文包
 import dayjs, { Dayjs } from "dayjs";
 import utc from "dayjs/plugin/utc";
@@ -587,8 +586,8 @@ const SCADADataPanel: React.FC<SCADADataPanelProps> = ({
                 ? "circle"
                 : metadata.source === "scada_raw"
                   ? "diamond"
-                  : "none",
-            symbolSize: isObserved ? 7 : 0,
+                  : "circle",
+            symbolSize: isObserved ? 7 : 5,
             showSymbol: isObserved,
             sampling: "lttb",
             connectNulls: false,
@@ -602,22 +601,10 @@ const SCADADataPanel: React.FC<SCADADataPanelProps> = ({
               .map((point) => [
                 new Date(point.timestamp).getTime(), point.values[key] ?? null,
               ]),
-            lineStyle: isObserved ? { width: 0 } : undefined,
-            areaStyle: isObserved
-              ? undefined
-              : {
-                  color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [
-                    {
-                      offset: 0,
-                      color: colors[index % colors.length],
-                    },
-                    {
-                      offset: 1,
-                      color: "rgba(255, 255, 255, 0)",
-                    },
-                  ]),
-                  opacity: 0.3,
-                },
+            lineStyle: {
+              width: isObserved ? 0 : 2,
+              type: metadata.source === "analysis_simulation" ? "dashed" : "solid",
+            },
           },
         ];
       });
@@ -628,20 +615,34 @@ const SCADADataPanel: React.FC<SCADADataPanelProps> = ({
       tooltip: {
         trigger: "axis",
         confine: true,
-        position: function (pt: any[]) {
-          return [pt[0], "10%"];
-        },
+        axisPointer: { type: "line", lineStyle: { color: "#94a3b8", type: "dashed" } },
+        valueFormatter: (value: number | string) => typeof value === "number"
+          ? value.toLocaleString("zh-CN", { maximumSignificantDigits: 6, useGrouping: false })
+          : String(value ?? "--"),
       },
       legend: {
-        top: "top",
+        type: "scroll",
+        top: 8,
+        left: 20,
+        width: "90%",
+        itemWidth: 20,
+        itemHeight: 8,
+        itemGap: 20,
+        textStyle: { color: "#475569", fontSize: 12 },
       },
       grid: {
-        left: "5%",
-        right: "5%",
-        bottom: "11%",
+        top: 120,
+        left: 20,
+        right: 24,
+        bottom: 76,
         containLabel: true,
       },
       toolbox: {
+        top: 36,
+        right: 16,
+        itemSize: 15,
+        itemGap: 16,
+        iconStyle: { borderColor: "#64748b" },
         feature: {
           dataZoom: {
             yAxisIndex: "none",
@@ -659,7 +660,14 @@ const SCADADataPanel: React.FC<SCADADataPanelProps> = ({
         axisLabel: {
           formatter: (value: number) => dayjs(value).tz("Asia/Shanghai").format("MM-DD\nHH:mm"),
           hideOverlap: true,
+          color: "#64748b",
+          fontSize: 12,
+          lineHeight: 16,
+          margin: 12,
         },
+        splitNumber: 6,
+        axisLine: { lineStyle: { color: "#cbd5e1" } },
+        axisTick: { show: false },
       },
       yAxis: [
         ...(hasFlowSeries
@@ -668,6 +676,9 @@ const SCADADataPanel: React.FC<SCADADataPanelProps> = ({
                 type: "value",
                 scale: true,
                 name: `流量 (${FLOW_DISPLAY_UNIT})`,
+                nameTextStyle: { color: "#64748b", fontSize: 12 },
+                axisLabel: { color: "#64748b", fontSize: 12 },
+                splitLine: { lineStyle: { color: "#e2e8f0", type: "dashed" } },
               },
             ]
           : []),
@@ -677,6 +688,9 @@ const SCADADataPanel: React.FC<SCADADataPanelProps> = ({
                 type: "value",
                 scale: true,
                 name: `压力 (${PRESSURE_DISPLAY_UNIT})`,
+                nameTextStyle: { color: "#64748b", fontSize: 12 },
+                axisLabel: { color: "#64748b", fontSize: 12 },
+                splitLine: { show: !hasFlowSeries, lineStyle: { color: "#e2e8f0", type: "dashed" } },
               },
             ]
           : []),
@@ -688,8 +702,23 @@ const SCADADataPanel: React.FC<SCADADataPanelProps> = ({
           end: 100,
         },
         {
+          type: "slider",
           start: 0,
           end: 100,
+          bottom: 12,
+          height: 24,
+          showDetail: false,
+          borderColor: "transparent",
+          backgroundColor: "#f5f7fa",
+          fillerColor: "rgba(25, 118, 210, 0.08)",
+          dataBackground: {
+            lineStyle: { color: "#94a3b8" },
+            areaStyle: { opacity: 0 },
+          },
+          selectedDataBackground: {
+            lineStyle: { color: "#1976d2" },
+            areaStyle: { opacity: 0 },
+          },
         },
       ],
       series: getSeries().map((series, index) => ({
@@ -698,7 +727,13 @@ const SCADADataPanel: React.FC<SCADADataPanelProps> = ({
           ? {
               markArea: {
                 silent: true,
-                itemStyle: { color: "rgba(255, 152, 0, 0.10)" },
+                itemStyle: { color: "rgba(255, 152, 0, 0.06)" },
+                label: {
+                  position: "insideTop",
+                  distance: 10,
+                  color: "#996515",
+                  fontSize: 11,
+                },
                 data: [[
                   { name: "事件方案时段", xAxis: Date.parse(eventRange.start) },
                   { xAxis: Date.parse(eventRange.end) },