fix(HEL-485): 盘中选择当天不再整页退回昨天

交易时段缺少盘后正式数据时继续展示当天盘中行情，只有开盘前、周末和历史日期才沿用最近收盘结果。

Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: multica-agent <github@multica.ai>

frontend/shared/dashboard.js

@@ -67,6 +67,11 @@ async function startAdminRefresh() {
     const actualCompact = actualDate.replaceAll("-", "");
     const updated = formatTimestamp(meta.updated_at);
     const freshness = dashboardFreshnessMessage(meta);
+    if (meta.realtime && actualCompact === requestedCompact && !meta.carried_forward) {
+      setAdminRefreshStatus("success", `刷新成功：已获取 ${actualDate} 的盘中行情，更新时间 ${updated}`, "circle-check");
+      showToast(`刷新成功：已获取 ${actualDate} 的盘中行情`);
+      return;
+    }
     if (freshness || actualCompact !== requestedCompact || meta.carried_forward || meta.limit_data_source === "derived") {
       setAdminRefreshStatus("warning", freshness || `部分正式数据尚未到齐，当前展示 ${actualDate || "最近可用数据"}`, "triangle-alert");
       setStatus(freshness || "部分正式数据尚未到齐，当前展示最近可用数据");