feat: 添加待审核开奖批次统计功能至管理员仪表板

- 在 AdminDashboardSnapshotBuilder 中新增 resultBatchQueue 方法，统计全站待审核的开奖批次信息。
- 更新仪表板数据结构，包含待审核开奖批次的总数、待开奖次数及首个待审核开奖的 ID。
- 在 AdminDashboardApiTest 中新增测试用例，验证仪表板返回的待审核开奖批次统计数据的准确性。

app/Services/Admin/AdminDashboardSnapshotBuilder.php

@@ -10,6 +10,7 @@ use App\Models\TicketItem;
 use App\Models\TicketOrder;
 use App\Models\TransferOrder;
 use App\Models\SettlementBatch;
+use App\Models\DrawResultBatch;
 use App\Lottery\DrawResultBatchStatus;
 use App\Services\Draw\DrawHallSnapshotBuilder;
 
@@ -40,6 +41,7 @@ final class AdminDashboardSnapshotBuilder
             'finance' => null,
             'draw' => null,
             'risk' => null,
+            'result_batch_queue' => null,
             'abnormal_transfer_total' => null,
             'warnings' => [],
             'capabilities' => [
@@ -75,6 +77,7 @@ final class AdminDashboardSnapshotBuilder
             $out['finance'] = $this->financeSummary($draw);
             $out['draw'] = $this->drawPanel($draw);
             $out['risk'] = $this->riskPanel($draw);
+            $out['result_batch_queue'] = $this->resultBatchQueue();
         }
 
         if ($canWallet) {
@@ -189,6 +192,34 @@ final class AdminDashboardSnapshotBuilder
         ];
     }
 
+    /**
+     * 全站待审核开奖批次（首页「待审核开奖」卡片用，不限于大厅当前期）。
+     *
+     * @return array{pending_review_total: int, pending_draw_count: int, first_pending_draw_id: int|null, first_pending_batch_id: int|null}
+     */
+    private function resultBatchQueue(): array
+    {
+        $pendingQuery = DrawResultBatch::query()
+            ->where('status', DrawResultBatchStatus::PendingReview->value);
+
+        $pendingTotal = (int) (clone $pendingQuery)->count();
+
+        $pendingDrawCount = $pendingTotal > 0
+            ? (int) (clone $pendingQuery)->distinct('draw_id')->count('draw_id')
+            : 0;
+
+        $firstPending = $pendingTotal > 0
+            ? (clone $pendingQuery)->orderBy('id')->first(['id', 'draw_id'])
+            : null;
+
+        return [
+            'pending_review_total' => $pendingTotal,
+            'pending_draw_count' => $pendingDrawCount,
+            'first_pending_draw_id' => $firstPending !== null ? (int) $firstPending->draw_id : null,
+            'first_pending_batch_id' => $firstPending !== null ? (int) $firstPending->id : null,
+        ];
+    }
+
     /** @return array<string, mixed> */
     private function drawPanel(Draw $draw): array
     {