fix: 修复审批流程完成后状态更新问题

主要修改：
1. 修复下一节点查询逻辑，使用 order > currentOrder 替代 order > 0
2. 在 submit 和 approve 方法中跳过 notify 节点直接完成流程
3. 添加详细的调试日志
4. 兼容两种数据格式：[1,2,3] 或 [{id:1},{id:2},{id:3}]

修复问题：
- 审批完成后流程移到 notify 节点而不是完成
- business_trip status 没有更新为 approved
- "我已审批"列表为空

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

backend/app/service/BusinessTripService.php

@@ -223,8 +223,12 @@ class BusinessTripService
 
                 // 如果节点完成，移动到下一节点
                 if ($nodeCompleted) {
+                    // 获取当前节点的 order 值
+                    $currentOrder = $node->order ?? 0;
+
+                    // 查找 order 比当前节点大的后续节点
                     $nextNodes = ApprovalNode::where('flow_id', $flow->id)
-                        ->where('order', '>', 0)
+                        ->where('order', '>', $currentOrder)
                         ->orderBy('order')
                         ->get();
 
@@ -234,8 +238,17 @@ class BusinessTripService
                         $approvalOrder->current_nodes = [];
                         $businessTrip->status = BusinessTrip::STATUS_APPROVED;
                     } else {
-                        // 移动到下一节点
+                        // 检查第一个后续节点
-                        $approvalOrder->current_nodes = $nextNodes->pluck('id')->toArray();
+                        $firstNextNode = $nextNodes->first();
+                        if ($firstNextNode && $firstNextNode->type === 'notify') {
+                            // 下一个是抄送节点，跳过并完成流程
+                            $approvalOrder->status = ApprovalOrder::STATUS_APPROVED;
+                            $approvalOrder->current_nodes = [];
+                            $businessTrip->status = BusinessTrip::STATUS_APPROVED;
+                        } else {
+                            // 移动到下一节点
+                            $approvalOrder->current_nodes = $nextNodes->pluck('id')->toArray();
+                        }
                     }
 
                     $approvalOrder->save();
@@ -429,9 +442,21 @@ class BusinessTripService
                     ->pluck('order_id')
                     ->toArray();
 
+                error_log("🔍 'approved' query: userId={$userId}, approvedOrderIds=" . json_encode($approvedOrderIds));
+
                 if (empty($approvedOrderIds)) {
                     $query->whereRaw('1 = 0'); // 返回空结果
                 } else {
+                    // 先检查是否有匹配的 business_trip（不加载关系）
+                    $checkCount = BusinessTrip::whereIn('approval_order_id', $approvedOrderIds)->count();
+                    error_log("🔍 Matching business_trips count (without relations): {$checkCount}");
+
+                    // 获取匹配的 business_trip IDs
+                    $matchingTrips = BusinessTrip::whereIn('approval_order_id', $approvedOrderIds)
+                        ->pluck('id')
+                        ->toArray();
+                    error_log("🔍 Matching business_trip IDs: " . json_encode($matchingTrips));
+
                     $query->whereIn('approval_order_id', $approvedOrderIds);
                 }
                 break;
@@ -751,24 +776,36 @@ class BusinessTripService
 
                 if ($nodeCompleted) {
                     // 当前节点完成，查找下一个节点
+                    error_log("✅ 节点 {$currentNodeId} 已完成，查找下一节点");
+
+                    // 获取当前节点的 order 值
+                    $currentOrder = $node->order ?? 0;
+                    error_log("📍 当前节点 order: {$currentOrder}");
+
+                    // 查找 order 比当前节点大的下一个节点
                     $nextNode = ApprovalNode::where('flow_id', $approvalOrder->flow_id)
-                        ->where('order', '>', 0)
+                        ->where('order', '>', $currentOrder)
                         ->orderBy('order')
                         ->first();
 
+                    error_log("🔍 下一节点: " . ($nextNode ? "id={$nextNode->id}, type={$nextNode->type}, name={$nextNode->name}, order={$nextNode->order}" : "null"));
+
                     if ($nextNode) {
                         // 有下一个节点
                         if ($nextNode->type === 'notify') {
                             // 下一个是抄送节点，跳过并完成流程
+                            error_log("⏭️  跳过抄送节点，完成流程");
                             $approvalOrder->status = ApprovalOrder::STATUS_APPROVED;
                             $approvalOrder->current_nodes = [];
                             $businessTrip->status = BusinessTrip::STATUS_APPROVED;
                         } else {
                             // 下一个是审批节点，移动到该节点
+                            error_log("➡️  移动到下一节点: {$nextNode->id}");
                             $approvalOrder->current_nodes = [$nextNode->id];
                         }
                     } else {
                         // 没有下一个节点，流程完成
+                        error_log("✅ 没有下一节点，流程完成");
                         $approvalOrder->status = ApprovalOrder::STATUS_APPROVED;
                         $approvalOrder->current_nodes = [];
                         $businessTrip->status = BusinessTrip::STATUS_APPROVED;