feat(screener): ScoreNodeCard with weight slider + active toggle + params

src/pages/stock/screener/components/canvas/nodes/ScoreNodeCard.jsx

@@ -0,0 +1,96 @@
+import React, { memo, useState } from 'react';
+import { Handle, Position } from '@xyflow/react';
+
+const DEFAULT_WEIGHT = 0.5;
+
+function ParamField({ name, schema, value, onChange }) {
+  return (
+    <label className="canvas-param-field">
+      <span>{schema?.label || name}</span>
+      <input
+        type="number"
+        value={value ?? schema?.default ?? 0}
+        step={schema?.step ?? 1}
+        onChange={(e) => onChange(name, Number(e.target.value))}
+      />
+    </label>
+  );
+}
+
+function ScoreNodeCard({ data }) {
+  const {
+    meta, weight, params, summary, description, accent, icon,
+    onWeightChange, onParamsChange,
+  } = data;
+  const [expanded, setExpanded] = useState(false);
+
+  const active = weight > 0;
+
+  const toggleActive = () => {
+    if (active) onWeightChange(0);
+    else        onWeightChange(DEFAULT_WEIGHT);
+  };
+
+  const updateParam = (key, v) =>
+    onParamsChange({ ...params, [key]: v });
+
+  return (
+    <div
+      className={`canvas-node canvas-node--score ${active ? '' : 'is-inactive'}`}
+      style={{ '--canvas-accent': accent || '#3b82f6' }}
+    >
+      <Handle type="target" position={Position.Left} isConnectable={false} />
+      <div className="canvas-node-title">
+        <span className="canvas-node-icon">{icon}</span>
+        <span>{meta?.label || meta?.name}</span>
+        {description && (
+          <span className="canvas-node-info" title={description}>ⓘ</span>
+        )}
+      </div>
+      {summary && <div className="canvas-node-summary">{summary}</div>}
+      <div className="canvas-node-weight">
+        <input
+          type="range"
+          min={0}
+          max={1}
+          step={0.05}
+          value={weight}
+          onChange={(e) => onWeightChange(Number(e.target.value))}
+          aria-label="가중치"
+        />
+        <span className="canvas-node-weight-value">{weight.toFixed(2)}</span>
+      </div>
+      <label className="canvas-node-active">
+        <input
+          type="checkbox"
+          checked={active}
+          onChange={toggleActive}
+        />
+        <span>활성</span>
+      </label>
+      <button
+        type="button"
+        className="canvas-node-expand"
+        onClick={() => setExpanded((v) => !v)}
+      >
+        {expanded ? '▴ 파라미터' : '▾ 파라미터'}
+      </button>
+      {expanded && (
+        <div className="canvas-node-params">
+          {Object.entries(meta?.param_schema || {}).map(([key, schema]) => (
+            <ParamField
+              key={key}
+              name={key}
+              schema={schema}
+              value={params?.[key]}
+              onChange={updateParam}
+            />
+          ))}
+        </div>
+      )}
+      <Handle type="source" position={Position.Right} isConnectable={false} />
+    </div>
+  );
+}
+
+export default memo(ScoreNodeCard);

src/pages/stock/screener/components/canvas/nodes/ScoreNodeCard.test.jsx

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+import { describe, it, expect, vi } from 'vitest';
+import { render, screen, fireEvent } from '@testing-library/react';
+import { ReactFlowProvider } from '@xyflow/react';
+import ScoreNodeCard from './ScoreNodeCard';
+
+const baseData = {
+  meta: {
+    name: 'volume_surge',
+    label: '거래량 급증',
+    param_schema: {
+      lookback_days: { type: 'integer', default: 20, label: 'lookback' },
+      multiplier:    { type: 'number',  default: 2.0, step: 0.1, label: 'mult' },
+    },
+  },
+  weight: 0.5,
+  params: { lookback_days: 20, multiplier: 2.0 },
+  summary: '20일 평균 대비 2배 이상',
+  description: '거래량이 평균 대비 급증한 종목을 가산',
+  accent: '#3b82f6',
+  onWeightChange: vi.fn(),
+  onParamsChange: vi.fn(),
+};
+
+function renderInFlow(data) {
+  return render(
+    <ReactFlowProvider>
+      <ScoreNodeCard data={data} />
+    </ReactFlowProvider>
+  );
+}
+
+describe('ScoreNodeCard', () => {
+  it('타이틀과 한 줄 요약을 표시한다', () => {
+    renderInFlow(baseData);
+    expect(screen.getByText('거래량 급증')).toBeInTheDocument();
+    expect(screen.getByText('20일 평균 대비 2배 이상')).toBeInTheDocument();
+  });
+
+  it('가중치 슬라이더 변경 시 onWeightChange 호출', () => {
+    const onWeightChange = vi.fn();
+    renderInFlow({ ...baseData, onWeightChange });
+    const slider = screen.getByRole('slider');
+    fireEvent.change(slider, { target: { value: '0.8' } });
+    expect(onWeightChange).toHaveBeenCalledWith(0.8);
+  });
+
+  it('활성 체크박스 uncheck 시 onWeightChange(0)', () => {
+    const onWeightChange = vi.fn();
+    renderInFlow({ ...baseData, weight: 0.5, onWeightChange });
+    const checkbox = screen.getByRole('checkbox', { name: /활성/ });
+    expect(checkbox).toBeChecked();
+    fireEvent.click(checkbox);
+    expect(onWeightChange).toHaveBeenCalledWith(0);
+  });
+
+  it('weight=0 상태에서 활성 체크 시 기본값 0.5로 복원', () => {
+    const onWeightChange = vi.fn();
+    renderInFlow({ ...baseData, weight: 0, onWeightChange });
+    const checkbox = screen.getByRole('checkbox', { name: /활성/ });
+    expect(checkbox).not.toBeChecked();
+    fireEvent.click(checkbox);
+    expect(onWeightChange).toHaveBeenCalledWith(0.5);
+  });
+
+  it('파라미터 펼치기 토글', () => {
+    renderInFlow(baseData);
+    expect(screen.queryByLabelText('lookback')).not.toBeInTheDocument();
+    fireEvent.click(screen.getByRole('button', { name: /파라미터/ }));
+    expect(screen.getByLabelText('lookback')).toBeInTheDocument();
+  });
+});