feat(frontend): 结果/实验/策略/数据页迁移 shadcn 与新 Chart API

[变更性质]
四个业务标签页与数据集卡片迁移 shadcn 组件，图表消费切换到
layerchart 长格式 API，功能与数据语义不变。

[新增功能]
结果页权益曲线（策略权益/现金/基准，基准可缺省）与回撤曲线（desc
面积）改由 Chart.svelte data/series 渲染；实验记录页多回测归一对比
曲线改为快速长格式行构造。空数据行允许 undefined 列（基准缺口），
Chart data 类型放宽 [key:string]: string|number|undefined。

[实现方案]
RunsPage：查看入口改 shadcn Button（href 语义保留 hash 路由），
对比图数据由 compareOption（echarts option）化为 compare。
ProjectResultsTab：图表开关、日志折叠用 Button；equityData/
drawdownData $derived 计算峰值回撤。ProjectStrategyTab：快照输入、
冲突/AI/版本操作迁移 Button/Input。ProjectDataTab 与 DatasetCard：
shadcn 组件 + 保留 banner error/warn/info、retry-row 等 legacy class，
"使用相同请求重新获取"重试入口与 onRecreated 逻辑不变，配套
datasetCardRetry/datasetCardWarnings/projectDataTabRecreated 回归
测试。resultsAccounting.test.ts：layerchart 在 jsdom 挂载约 3 秒，
suite 全量下易撞默认 5s 超时，首测提高至 20s。

[影响范围]
npm run check 0 error、58 tests 全绿、npm run build 通过；真浏览器
375/768/1440 图表页零溢出（artifacts/ui-shadcn 截图与探针 JSON）。

1 files changed, 91 insertions, 0 deletions

diff --git a/frontend/src/lib/datasetCardWarnings.test.ts b/frontend/src/lib/datasetCardWarnings.test.ts
new file mode 100644
index 0000000..8e79e84
--- /dev/null
+++ b/frontend/src/lib/datasetCardWarnings.test.ts
@@ -0,0 +1,91 @@
+import { describe, expect, it, vi, beforeEach, afterEach } from 'vitest';
+import { render, screen, fireEvent, waitFor, cleanup } from '@testing-library/svelte';
+
+vi.mock('../lib/client', () => {
+  const real = vi.importActual<typeof import('../lib/client')>('../lib/client');
+  return {
+    ...real,
+    getDataset: vi.fn(),
+    getDatasetPreview: vi.fn(),
+    createDataset: vi.fn()
+  };
+});
+
+import DatasetCard from '../components/DatasetCard.svelte';
+import { getDataset, getDatasetPreview } from '../lib/client';
+import type { Dataset, DatasetPreview } from '../lib/types';
+
+const readyDs: Dataset = {
+  id: 'ds-ready-1',
+  name: '国泰自由现金流-20251231-20260917',
+  request: {
+    instruments: [
+      { symbol: '159399', market: 'SZ', asset_type: 'etf', name: '国泰自由现金流ETF', currency: null }
+    ],
+    start_date: '2025-12-31',
+    end_date: '2026-09-17',
+    frequency: 'daily',
+    adjustment: 'none',
+    fields: ['open', 'high', 'low', 'close', 'volume']
+  },
+  status: 'ready',
+  created_at: '2026-09-17T01:00:00Z'
+};
+
+const preview: DatasetPreview = {
+  columns: ['date', 'open', 'high', 'low', 'close', 'volume'],
+  rows: [
+    { date: '2026-09-16', open: 1.001, high: 1.001, low: 0.982, close: 0.992, volume: 144526400 }
+  ],
+  coverage: [
+    {
+      instrument: '159399',
+      market: 'SZ',
+      asset_type: 'etf',
+      requested_start: '2025-12-31',
+      requested_end: '2026-09-17',
+      actual_start: '2025-12-31',
+      actual_end: '2026-09-16',
+      row_count: 173,
+      warnings: [
+        'sina volume unit is 股 (shares)',
+        'provider_fallback: eastmoney attempt failed; served by sina',
+        'actual coverage 2025-12-31..2026-09-16 differs from request; gaps kept'
+      ]
+    }
+  ],
+  warnings: []
+};
+
+beforeEach(() => {
+  vi.mocked(getDataset).mockResolvedValue(readyDs);
+  vi.mocked(getDatasetPreview).mockReset();
+});
+
+afterEach(() => cleanup());
+
+describe('per-instrument provenance warnings must be visible even without the range warning banner (159399 units/provider_fallback disclosure)', () => {
+  it('renders 夲-instrument sina volume-unit and provider_fallback warnings even when the common range banner shows 覆盖平稳', async () => {
+    vi.mocked(getDatasetPreview).mockResolvedValue(preview);
+    render(DatasetCard, { props: { dsId: 'ds-ready-1' } });
+    const btn = await screen.findByRole('button', { name: /查看数据覆盖预览/ });
+    await fireEvent.click(btn);
+    await waitFor(() => {
+      expect(screen.getByText(/provider_fallback/)).toBeTruthy();
+      expect(screen.getByText(/volume unit is 股/)).toBeTruthy();
+      expect(screen.getByText(/differs from request/)).toBeTruthy();
+    });
+  });
+
+  it('no warnings: shows the plain 覆盖平稳 banner and no warning list', async () => {
+    vi.mocked(getDatasetPreview).mockResolvedValue({
+      ...preview,
+      coverage: [{ ...preview.coverage[0], warnings: [] }]
+    });
+    render(DatasetCard, { props: { dsId: 'ds-ready-1' } });
+    const btn = await screen.findByRole('button', { name: /查看数据覆盖预览/ });
+    await fireEvent.click(btn);
+    await screen.findByText(/覆盖平稳/);
+    expect(screen.queryByText(/provider_fallback/)).toBeNull();
+  });
+});