fix: 修复待审批列表查询逻辑

- 检查用户是否在当前节点的审批人列表中
- 排除已经审批过的申请
- 同时修复数据库节点7的审批人配置

问题：待审批列表没有验证用户是否为当前节点审批人

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/app/service/BusinessTripService.php

@@ -388,16 +388,41 @@ class BusinessTripService
                 if (empty($pendingOrderIds)) {
                     $query->whereRaw('1 = 0'); // 返回空结果
                 } else {
-                    // 获取这些审批单中当前用户待审批的，排除已审批的
-                    $approvedOrderIds = ApprovalRecord::whereIn('order_id', $pendingOrderIds)
-                        ->where('approver_id', $userId)
-                        ->whereIn('action', ['approve', 'reject'])
-                        ->pluck('order_id')
-                        ->toArray();
+                    // 获取这些审批单的当前节点
+                    $pendingOrders = ApprovalOrder::whereIn('id', $pendingOrderIds)->get();
+                    $validOrderIds = [];
 
-                    $pendingOrderIds = array_diff($pendingOrderIds, $approvedOrderIds);
+                    foreach ($pendingOrders as $order) {
+                        $currentNodes = $order->current_nodes ?? [];
 
-                    $query->whereIn('approval_order_id', $pendingOrderIds);
+                        // 检查用户是否在当前节点的审批人列表中
+                        $isApprover = false;
+                        foreach ($currentNodes as $nodeId) {
+                            $node = ApprovalNode::find($nodeId);
+                            if ($node && in_array($userId, $node->approvers ?? [])) {
+                                $isApprover = true;
+                                break;
+                            }
+                        }
+
+                        // 如果用户是当前节点审批人，且未审批过，则加入列表
+                        if ($isApprover) {
+                            $hasApproved = ApprovalRecord::where('order_id', $order->id)
+                                ->where('approver_id', $userId)
+                                ->whereIn('action', ['approve', 'reject'])
+                                ->exists();
+
+                            if (!$hasApproved) {
+                                $validOrderIds[] = $order->id;
+                            }
+                        }
+                    }
+
+                    if (empty($validOrderIds)) {
+                        $query->whereRaw('1 = 0');
+                    } else {
+                        $query->whereIn('approval_order_id', $validOrderIds);
+                    }
                 }
                 break;
             case 'approved':