feat: AI分析页支持按日期查看历史报告（?date=，兼容?data=）

backend/dist/admin.html

@@ -334,7 +334,7 @@ function renderReports(list) {
   document.getElementById('recentBody').innerHTML = list.map(r =>
     `<tr>
       <td>${r.trade_date}</td>
-      <td><a href="/ai-analysis" target="_blank" style="color:var(--primary);text-decoration:none">${r.title || '-'}</a></td>
+      <td><a href="/ai-analysis?date=${r.trade_date}" target="_blank" style="color:var(--primary);text-decoration:none">${r.title || '-'}</a></td>
       <td>${r.tokens_used || 0}</td>
     </tr>`
   ).join('') || '<tr><td colspan="3" style="color:var(--muted-foreground);text-align:center">暂无数据</td></tr>';
@@ -349,7 +349,7 @@ function renderAllReports(list) {
       <td>${r.tokens_used || 0}</td>
       <td>${r.created_at || '-'}</td>
       <td style="white-space:nowrap">
-        <a href="/ai-analysis" target="_blank" class="btn btn-ghost btn-sm" style="padding:3px 10px;font-size:11px;text-decoration:none">查看</a>
+        <a href="/ai-analysis?date=${r.trade_date}" target="_blank" class="btn btn-ghost btn-sm" style="padding:3px 10px;font-size:11px;text-decoration:none">查看</a>
         <button class="btn btn-destructive btn-sm" style="padding:3px 10px;font-size:11px" onclick="deleteReport(${r.id})">删除</button>
       </td>
     </tr>`