feat(admin-dashboard): add mini trend chart for 7d paid sum

resources/views/admin/dashboard.blade.php

@@ -84,8 +84,19 @@
 
         @php
             $trendRows = (array) ($platformOrderTrend7d ?? []);
+            // 用于前端渐进增强渲染迷你图表（JS 读取 data-points）
+            $trendPoints = [];
+            foreach ($trendRows as $r) {
+                $trendPoints[] = [
+                    'date' => (string) ($r['date'] ?? ''),
+                    'count' => (int) ($r['count'] ?? 0),
+                    'paid_sum' => (float) ($r['paid_sum'] ?? 0),
+                ];
+            }
         @endphp
 
+        <div class="adm-mini-chart" data-role="platform-order-trend-7d-chart" data-points='@json($trendPoints)'></div>
+
         <table class="mt-10" data-role="platform-order-trend-7d">
             <thead>
             <tr>