feat(selection): add Zhixing line indicators to selection chart and update related components

.gitignore

@@ -20,3 +20,6 @@ node_modules/
 .pnpm-store/
 dist/
 coverage/
+
+# Playwright CLI session artifacts
+.playwright-cli/

zhixing-server/src/zhixing_server/modules/selection/application/chart.py

@@ -9,7 +9,7 @@ from typing import Literal, cast
 
 import pandas as pd
 
-from ..domain.indicators import compute_kdj
+from ..domain.indicators import compute_kdj, compute_zhixing_lines
 from ..domain.ports import MarketDataReader
 
 SELECTION_CHART_LIMIT = 250
@@ -21,7 +21,7 @@ class SelectionChartNotFound(LookupError):
 
 @dataclass(frozen=True, slots=True)
 class SelectionChartPoint:
-    """One date-aligned OHLCV and KDJ point in the public chart vocabulary."""
+    """One date-aligned OHLCV, KDJ, and Zhixing-line point."""
 
     trade_date: date
     open: float | None
@@ -32,6 +32,8 @@ class SelectionChartPoint:
     k: float | None
     d: float | None
     j: float | None
+    trend_white: float | None
+    trend_yellow: float | None
 
 
 @dataclass(frozen=True, slots=True)
@@ -46,7 +48,7 @@ class SelectionChart:
 
 
 class GetSelectionChart:
-    """Load one qfq history, compute KDJ, then bound the response series."""
+    """Load one qfq history, compute KDJ and Zhixing lines, then bound the series."""
 
     def __init__(self, reader: MarketDataReader) -> None:
         """Inject the market-data reader owned by the selection context."""
@@ -54,7 +56,7 @@ class GetSelectionChart:
         self.reader = reader
 
     def execute(self, ts_code: str, target_trade_date: date) -> SelectionChart:
-        """Return at most 250 points without changing KDJ's full-history state.
+        """Return at most 250 points without changing full-history indicator state.
 
         Args:
             ts_code: Tushare stock identifier selected by the user.
@@ -83,6 +85,7 @@ class GetSelectionChart:
             }
         )
         kdj = compute_kdj(frame)
+        white, yellow = compute_zhixing_lines(frame["close"])
         start = max(0, len(bars) - SELECTION_CHART_LIMIT)
         points = tuple(
             SelectionChartPoint(
@@ -95,6 +98,8 @@ class GetSelectionChart:
                 k=_finite_or_none(kdj.iloc[index]["K"]),
                 d=_finite_or_none(kdj.iloc[index]["D"]),
                 j=_finite_or_none(kdj.iloc[index]["J"]),
+                trend_white=_finite_or_none(white.iloc[index]),
+                trend_yellow=_finite_or_none(yellow.iloc[index]),
             )
             for index, bar in enumerate(bars)
             if index >= start

zhixing-server/src/zhixing_server/modules/selection/presentation/http.py

@@ -147,7 +147,7 @@ class SelectionStockResponse(BaseModel):
 
 
 class SelectionChartPointResponse(BaseModel):
-    """One date-aligned qfq OHLCV and KDJ point."""
+    """One date-aligned qfq OHLCV, KDJ, and Zhixing-line point."""
 
     trade_date: date
     open: float | None
@@ -158,6 +158,8 @@ class SelectionChartPointResponse(BaseModel):
     k: float | None
     d: float | None
     j: float | None
+    trend_white: float | None
+    trend_yellow: float | None
 
 
 class SelectionChartResponse(BaseModel):
@@ -268,7 +270,7 @@ def get_selection_chart(
     target_trade_date: date,
     service: Annotated[GetSelectionChart, Depends(get_selection_chart_service)],
 ) -> SelectionChartResponse:
-    """Return one stock's bounded qfq OHLCV and KDJ history."""
+    """Return one stock's bounded qfq OHLCV, KDJ, and Zhixing-line history."""
 
     try:
         chart = service.execute(ts_code, target_trade_date)
@@ -482,6 +484,8 @@ def _chart_response(chart: SelectionChart) -> SelectionChartResponse:
                 k=point.k,
                 d=point.d,
                 j=point.j,
+                trend_white=point.trend_white,
+                trend_yellow=point.trend_yellow,
             )
             for point in chart.points
         ],

zhixing-server/tests/test_selection_http.py

@@ -133,6 +133,8 @@ class FakeChartService:
                     k=52.0,
                     d=48.0,
                     j=60.0,
+                    trend_white=10.2,
+                    trend_yellow=10.4,
                 ),
             ),
         )
@@ -451,6 +453,8 @@ def test_chart_returns_bounded_qfq_contract() -> None:
                 "k": 52.0,
                 "d": 48.0,
                 "j": 60.0,
+                "trend_white": 10.2,
+                "trend_yellow": 10.4,
             }
         ],
     }

zhixing-server/tests/unit/selection/test_chart.py

@@ -9,7 +9,10 @@ from zhixing_server.modules.selection.application.chart import (
     GetSelectionChart,
     SelectionChartNotFound,
 )
-from zhixing_server.modules.selection.domain.indicators import compute_kdj
+from zhixing_server.modules.selection.domain.indicators import (
+    compute_kdj,
+    compute_zhixing_lines,
+)
 from zhixing_server.modules.selection.domain.models import SelectionBar, StockHistory
 
 
@@ -61,9 +64,12 @@ def test_chart_computes_on_full_history_before_returning_last_250_points() -> No
         }
     )
     expected = compute_kdj(frame).iloc[-1]
+    expected_white, expected_yellow = compute_zhixing_lines(frame["close"])
     assert chart.points[-1].k == pytest.approx(float(expected["K"]))
     assert chart.points[-1].d == pytest.approx(float(expected["D"]))
     assert chart.points[-1].j == pytest.approx(float(expected["J"]))
+    assert chart.points[-1].trend_white == pytest.approx(float(expected_white.iloc[-1]))
+    assert chart.points[-1].trend_yellow == pytest.approx(float(expected_yellow.iloc[-1]))
 
 
 def test_chart_filters_future_rows_and_preserves_nullable_points() -> None:

zhixing-web/src/features/selection/api/selection.types.ts

@@ -70,6 +70,8 @@ export interface SelectionChartPoint {
   k: number | null
   d: number | null
   j: number | null
+  trend_white: number | null
+  trend_yellow: number | null
 }
 
 export interface SelectionChart {

zhixing-web/src/features/selection/components/selection-chart-option.test.ts

@@ -13,6 +13,8 @@ function point(index: number): SelectionChartPoint {
     low: index + 9,
     open: index + 10,
     trade_date: `2026-${String(Math.floor(index / 28) + 1).padStart(2, "0")}-${String((index % 28) + 1).padStart(2, "0")}`,
+    trend_white: index + 10.2,
+    trend_yellow: index + 10.4,
     volume: index + 1000,
   }
 }
@@ -28,9 +30,11 @@ describe("selection chart option", () => {
     }>
     const series = option.series as Array<{
       data: unknown[]
+      name: string
       xAxisIndex: number
       yAxisIndex: number
     }>
+    const legends = option.legend as Array<{ data: string[] }>
 
     expect(dataZoom).toHaveLength(2)
     expect(dataZoom[0]).toMatchObject({
@@ -39,13 +43,26 @@ describe("selection chart option", () => {
       xAxisIndex: [0, 1, 2],
     })
     expect(dataZoom[1].xAxisIndex).toEqual([0, 1, 2])
-    expect(series[0]).toMatchObject({ xAxisIndex: 0, yAxisIndex: 0 })
+    expect(legends[0]?.data).toEqual(["知行白线", "知行黄线"])
-    expect(series[1]).toMatchObject({ xAxisIndex: 1, yAxisIndex: 1 })
+    expect(series.find((item) => item.name === "日线")).toMatchObject({
-    expect(series.slice(2)).toEqual(
+      xAxisIndex: 0,
-      expect.arrayContaining([
+      yAxisIndex: 0,
-        expect.objectContaining({ xAxisIndex: 2, yAxisIndex: 2 }),
+    })
-      ]),
+    expect(series.find((item) => item.name === "知行白线")).toMatchObject({
-    )
+      data: points.map((item) => item.trend_white),
+      xAxisIndex: 0,
+      yAxisIndex: 0,
+    })
+    expect(series.find((item) => item.name === "知行黄线")).toMatchObject({
+      data: points.map((item) => item.trend_yellow),
+      xAxisIndex: 0,
+      yAxisIndex: 0,
+    })
+    expect(series.find((item) => item.name === "成交量")).toMatchObject({
+      xAxisIndex: 1,
+      yAxisIndex: 1,
+    })
+    expect(series.filter((item) => item.xAxisIndex === 2)).toHaveLength(3)
     expect(series[0].data[0]).toEqual([10, 10.5, 9, 11])
   })
 
@@ -57,20 +74,25 @@ describe("selection chart option", () => {
       high: null,
       j: null,
       k: null,
+      trend_white: null,
+      trend_yellow: null,
       volume: null,
     }
     const option = buildSelectionChartOption([incomplete])
     const series = option.series as Array<{
       connectNulls?: boolean
       data: unknown[]
+      name: string
     }>
     const candle = series[0].data[0] as number[]
+    const volume = series.find((item) => item.name === "成交量")
+    const lines = series.filter((item) => item.connectNulls === false)
 
     expect(candle).toHaveLength(4)
     expect(candle.every(Number.isNaN)).toBe(true)
-    expect(series[1].data[0]).toMatchObject({ value: null })
+    expect(volume?.data[0]).toMatchObject({ value: null })
-    for (const indicator of series.slice(2)) {
+    expect(lines).toHaveLength(5)
-      expect(indicator.connectNulls).toBe(false)
+    for (const indicator of lines) {
       expect(indicator.data).toEqual([null])
     }
   })

zhixing-web/src/features/selection/components/selection-chart-option.ts

@@ -16,6 +16,11 @@ import type { SelectionChartPoint } from "../api/selection.types"
 
 const DEFAULT_VISIBLE_POINTS = 120
 
+const zhixingLineSeries = [
+  { color: "#a8a8a8", key: "trend_white", name: "知行白线" },
+  { color: "#eab308", key: "trend_yellow", name: "知行黄线" },
+] as const
+
 export type SelectionChartOption = ComposeOption<
   | BarSeriesOption
   | CandlestickSeriesOption
@@ -30,7 +35,7 @@ export type SelectionChartOption = ComposeOption<
 /**
  * Build the three-grid financial chart configuration from aligned API points.
  *
- * @param points Ascending qfq OHLCV and KDJ points from the selection API.
+ * @param points Ascending qfq OHLCV, KDJ, and Zhixing-line points from the API.
  * @returns One ECharts option with synchronized axes and an exact 120-point window.
  */
 export function buildSelectionChartOption(
@@ -63,11 +68,18 @@ export function buildSelectionChartOption(
       { bottom: "28%", height: "14%", left: 64, right: 24 },
       { bottom: 48, height: "20%", left: 64, right: 24 },
     ],
-    legend: {
+    legend: [
+      {
+        data: zhixingLineSeries.map((line) => line.name),
+        right: 20,
+        top: 8,
+      },
+      {
         data: ["K", "D", "J"],
         right: 20,
         top: "73%",
       },
+    ],
     series: [
       {
         data: points.map(toCandlestickValue),
@@ -82,6 +94,21 @@ export function buildSelectionChartOption(
         xAxisIndex: 0,
         yAxisIndex: 0,
       },
+      ...zhixingLineSeries.map((line): LineSeriesOption => ({
+        connectNulls: false,
+        data: points.map((point) => point[line.key]),
+        itemStyle: { color: line.color },
+        lineStyle: {
+          color: line.color,
+          width: 1.5,
+        },
+        name: line.name,
+        showSymbol: false,
+        smooth: false,
+        type: "line",
+        xAxisIndex: 0,
+        yAxisIndex: 0,
+      })),
       {
         data: points.map((point) => ({
           itemStyle: {

zhixing-web/src/features/selection/components/selection-chart.test.tsx

@@ -46,6 +46,8 @@ const chart: SelectionChartData = {
       low: 9,
       open: 10,
       trade_date: "2026-08-08",
+      trend_white: 10.2,
+      trend_yellow: 10.4,
       volume: 1000,
     },
   ],
@@ -88,7 +90,7 @@ describe("SelectionChart", () => {
 
     expect(
       screen.getByRole("img", {
-        name: "药明康德 日线、成交量和 KDJ 图表",
+        name: "药明康德 日线、知行黄白线、成交量和 KDJ 图表",
       }),
     ).toBeInTheDocument()
     expect(chartMocks.init).toHaveBeenCalledTimes(1)

zhixing-web/src/features/selection/components/selection-chart.tsx

@@ -61,7 +61,7 @@ export function SelectionChart({ chart }: SelectionChartProps) {
 
   return (
     <div
-      aria-label={`${chart.name} 日线、成交量和 KDJ 图表`}
+      aria-label={`${chart.name} 日线、知行黄白线、成交量和 KDJ 图表`}
       className="h-[620px] min-h-[520px] w-full"
       ref={containerRef}
       role="img"