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, 128 insertions, 41 deletions

diff --git a/frontend/src/components/DatasetCard.svelte b/frontend/src/components/DatasetCard.svelte
index 7b38874..2d49e65 100644
--- a/frontend/src/components/DatasetCard.svelte
+++ b/frontend/src/components/DatasetCard.svelte
@@ -1,15 +1,24 @@
 <script lang="ts">
   import Status from './Status.svelte';
-  import { getDataset, getDatasetPreview } from '../lib/client';
+  import { getDataset, getDatasetPreview, createDataset } from '../lib/client';
   import { extractStatusMessage } from '../lib/state';
   import { adjustmentLabel, assetTypeLabel, instrumentLabel, datasetStatusLabel, fmtDate } from '../lib/format';
   import { summarizeCoverage } from '../lib/coverage';
   import type { Dataset, DatasetPreview } from '../lib/types';
+  import { Button } from '$lib/components/ui/button';
+  import * as Card from '$lib/components/ui/card';
+  import * as Table from '$lib/components/ui/table';
+  import { Badge } from '$lib/components/ui/badge';
+  import { Alert, AlertTitle, AlertDescription } from '$lib/components/ui/alert';
 
   interface Props {
     dsId: string;
+    /** called after a failed dataset is re-requested so the parent list can
+     *  reload and show the new dataset (which then self-tracks pending→ready|
+     *  failed via the parent's polling). */
+    onRecreated?: (d: Dataset) => void;
   }
-  let { dsId }: Props = $props();
+  let { dsId, onRecreated }: Props = $props();
 
   let ds = $state<Dataset | null>(null);
   let error: string | null = $state(null);
@@ -27,6 +36,46 @@
     }
   }
 
+  let recreateBusy = $state(false);
+  let recreateErr: string | null = $state(null);
+  let recreatedId: string | null = $state(null);
+
+  /// Failed datasets are terminal (no retry endpoint exists): recreate via the
+  /// normal create API using the exact stored request, while the original
+  /// failed record stays untouched and visible.
+  async function recreateFromRequest() {
+    // ds.request is the canonical request WITHOUT a dataset name: preserve the
+    // user-visible name from ds.name instead (leader review 2026-09-17).
+    if (!ds?.request || recreateBusy || recreatedId) return;
+    recreateBusy = true;
+    recreateErr = null;
+    recreatedId = null;
+    try {
+      const body = {
+        name: ds.name ?? undefined,
+        instruments: (ds.request.instruments ?? []).map((i) => ({
+          symbol: i.symbol,
+          market: i.market,
+          asset_type: i.asset_type,
+          name: i.name ?? null,
+          currency: null
+        })),
+        start_date: ds.request.start_date,
+        end_date: ds.request.end_date,
+        frequency: ds.request.frequency,
+        adjustment: ds.request.adjustment,
+        fields: [...(ds.request.fields ?? [])]
+      };
+      const created = await createDataset(body);
+      recreatedId = created.id;
+      onRecreated?.(created);
+    } catch (e) {
+      recreateErr = `重新获取失败：${extractStatusMessage(e)}`;
+    } finally {
+      recreateBusy = false;
+    }
+  }
+
   $effect(() => {
     void load();
     return stopPolling;
@@ -68,37 +117,63 @@
   }
 </script>
 
-<div class="card">
+<Card.Root>
   {#if ds}
     <div class="spread">
-      <div>
+      <div class="min-w-0">
         <strong>{ds.name ?? '未命名数据集'}</strong>
         {#if ds.manifest_hash}<span class="hint mono">manifest {ds.manifest_hash.slice(0, 10)}…</span>{/if}
-        {#if ds.cache_hit}<span class="badge teal">缓存命中 · 复用现有物化对象</span>{/if}
+        {#if ds.cache_hit}<Badge variant="secondary">缓存命中 · 复用现有物化对象</Badge>{/if}
       </div>
-      <span class="badge {ds.status === 'ready' ? 'ok' : ds.status === 'failed' ? 'danger' : 'warn'}">
+      <Badge variant={ds.status === 'ready' ? 'secondary' : ds.status === 'failed' ? 'destructive' : 'outline'}
+        class={ds.status === 'ready' ? 'badge ok' : ds.status === 'failed' ? 'badge danger' : 'badge warn'}>
         {datasetStatusLabel[ds.status]}
-      </span>
+      </Badge>
+    </div>
+    <div class="table-wrap">
+      <Table.Root>
+        <Table.Body>
+          <Table.Row>
+            <Table.Cell class="k">请求标的</Table.Cell>
+            <Table.Cell>{(ds.request.instruments ?? []).map(instrumentLabel).join('；')}</Table.Cell>
+          </Table.Row>
+          <Table.Row>
+            <Table.Cell class="k">范围</Table.Cell>
+            <Table.Cell>{ds.request.start_date} ~ {ds.request.end_date} · {ds.request.frequency} · {adjustmentLabel[ds.request.adjustment] ?? ds.request.adjustment}</Table.Cell>
+          </Table.Row>
+          <Table.Row>
+            <Table.Cell class="k">字段</Table.Cell>
+            <Table.Cell>{(ds.request.fields ?? []).join(', ')}</Table.Cell>
+          </Table.Row>
+          <Table.Row>
+            <Table.Cell class="k">创建时间</Table.Cell>
+            <Table.Cell>{fmtDate(ds.created_at)}</Table.Cell>
+          </Table.Row>
+        </Table.Body>
+      </Table.Root>
     </div>
-    <table class="data kv">
-      <tbody>
-        <tr><th>请求标的</th><td>{(ds.request.instruments ?? []).map(instrumentLabel).join('；')}</td></tr>
-        <tr><th>范围</th><td>{ds.request.start_date} ~ {ds.request.end_date} · {ds.request.frequency} · {adjustmentLabel[ds.request.adjustment] ?? ds.request.adjustment}</td></tr>
-        <tr><th>字段</th><td>{(ds.request.fields ?? []).join(', ')}</td></tr>
-        <tr><th>创建时间</th><td>{fmtDate(ds.created_at)}</td></tr>
-      </tbody>
-    </table>
     {#if ds.status === 'failed'}
       <div class="banner error" role="alert"><span aria-hidden="true">✕</span><span>{ds.error ?? '数据获取失败'}</span></div>
-    {/if}
-    {#if ds.status !== 'ready'}
-      <p class="hint">{ds.status === 'pending' || ds.status === 'running' ? '获取中，完成后可预览覆盖情况' : ''}</p>
+      <div class="retry-row">
+        <Button variant="outline" size="sm"
+          disabled={recreateBusy || recreatedId !== null}
+          onclick={() => void recreateFromRequest()}
+        >
+          {recreateBusy ? '重新获取中…' : '使用相同请求重新获取'}
+        </Button>
+        {#if recreatedId}
+          <span class="hint">
+            已用原请求创建新数据集（编号 {recreatedId.slice(0, 8)}…），新数据集出现在下方列表并自动跟踪进度；本条失败记录原样保留。
+          </span>
+        {/if}
+        {#if recreateErr}<span role="alert">{recreateErr}</span>{/if}
+      </div>
     {/if}
     {#if ds.status === 'ready'}
       <div>
-        <button class="btn small" aria-expanded={showPreview} onclick={togglePreview}>
+        <Button variant="outline" size="sm" aria-expanded={showPreview} onclick={togglePreview}>
           {showPreview ? '收起预览' : '查看数据覆盖预览'}
-        </button>
+        </Button>
       </div>
       {#if showPreview}
         <div class="preview-box">
@@ -111,30 +186,40 @@
                 <ul class="cov-list">
                   {#each cov.warnings as w, i (i)}<li>{w}</li>{/each}
                 </ul>
-                {#if (preview.coverage ?? []).some((c) => c.warnings)}
-                  <ul class="cov-list">
-                    {#each preview.coverage.filter((c) => c.warnings) as c (c.instrument)}
-                      <li>{c.instrument}：{(c.warnings ?? []).join('；')}</li>
-                    {/each}
-                  </ul>
-                {/if}
               </div></div>
-            {:else if cov.common.start}
+            {/if}
+            {#if (preview.coverage ?? []).some((c) => (c.warnings ?? []).length > 0)}
+              <div class="banner warn" role="alert"><span aria-hidden="true">⚠</span><div>
+                <div class="cov-caption">来源与口径说明：</div>
+                <ul class="cov-list">
+                  {#each preview.coverage.filter((c) => (c.warnings ?? []).length > 0) as c (c.instrument)}
+                    <li>{c.instrument}：{(c.warnings ?? []).join('；')}</li>
+                  {/each}
+                </ul>
+              </div></div>
+            {/if}
+            {#if cov.common.start && cov.warnings.length === 0}
               <div class="banner info">
                 <span aria-hidden="true">✓</span>
                 <span>覆盖平稳：共有可用区间 {cov.common.start} ~ {cov.common.end}。可以直接用于回测。</span>
               </div>
             {/if}
-            <table class="data scrollx">
-              <thead>
-                <tr>{#each preview.columns as c (c)}<th>{c}</th>{/each}</tr>
-              </thead>
-              <tbody>
-                {#each preview.rows as row, i (i)}
-                  <tr>{#each preview.columns as c (c)}<td class="num">{row[c]}</td>{/each}</tr>
-                {/each}
-              </tbody>
-            </table>
+            <div class="scrollx">
+              <Table.Root>
+                <Table.Header>
+                  <Table.Row>
+                    {#each preview.columns as c (c)}<Table.Head>{c}</Table.Head>{/each}
+                  </Table.Row>
+                </Table.Header>
+                <Table.Body>
+                  {#each preview.rows as row, i (i)}
+                    <Table.Row>
+                      {#each preview.columns as c (c)}<Table.Cell class="num">{row[c]}</Table.Cell>{/each}
+                    </Table.Row>
+                  {/each}
+                </Table.Body>
+              </Table.Root>
+            </div>
             {#if preview.truncated}
               <p class="hint">预览仅展示部分行</p>
             {/if}
@@ -145,13 +230,15 @@
   {:else}
     <Status busy={busy} error={error} busyText="载入数据集…" empty={null} />
   {/if}
-</div>
+</Card.Root>
 
 <style>
-  .kv th { width: 110px; color: var(--text-2); font-weight: 500; min-width: 110px; }
+  .table-wrap :global(td:first-child) { width: 92px; min-width: 92px; color: var(--text-2); font-weight: 500; }
   .mono { font-family: var(--mono); margin-left: 0.5rem; }
   .preview-box { margin-top: 0.5rem; display: grid; gap: 0.5rem; }
-  .scrollx { display: block; overflow-x: auto; }
+  .scrollx { display: block; overflow-x: auto; min-width: 0; }
   .cov-caption { font-weight: 600; }
   .cov-list { margin: 0.2rem 0 0 1.1rem; padding: 0; }
+  .retry-row { margin-top: 0.4rem; display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; min-width: 0; }
+  .retry-row .hint { min-width: 0; overflow-wrap: anywhere; }
 </style>