```

feat(split): 添加分账诊断功能用于后台展示

- 新增 SplitCalculator::diagnose() 方法，用于诊断订单分账问题
- 返回分账来源、佣金总额、规则总额及具体问题说明
- 在管理员分账订单控制器中集成诊断信息显示
- 优化前端表格显示分账来源标签和诊断提示信息
- 修复佣金奖励查询中 agent_id 使用错误的问题
```

application/admin/controller/shopro/split/Order.php

@@ -148,6 +148,13 @@ class Order extends Base
             $data['receiver_summary'] = $summaryLines ? implode('；', $summaryLines) : '—';
             $data['fail_reason'] = $this->formatFailReason($data['wx_result'] ?? '', $status);
 
+            $diag = (new SplitCalculator())->diagnose($orderId);
+            $data['split_source'] = $diag['final_source'];
+            $data['split_source_text'] = $this->formatSplitSourceText($diag);
+            $data['split_diagnose'] = $diag['issues'];
+            $data['commission_total'] = $diag['commission_total'];
+            $data['rule_total'] = $diag['rule_total'];
+
             unset($data['order'], $data['receivers']);
             $rows[] = $data;
         }
@@ -280,6 +287,22 @@ class Order extends Base
         return $mobile;
     }
 
+    protected function formatSplitSourceText(array $diag)
+    {
+        $map = [
+            'commission' => '按佣金分账',
+            'rule'       => '按规则分账（兜底）',
+            'none'       => '未算出明细',
+        ];
+        $text = $map[$diag['final_source'] ?? ''] ?? '-';
+        if (($diag['final_source'] ?? '') === 'commission' && ($diag['commission_total'] ?? 0) > 0) {
+            $text .= ' ¥' . number_format(floatval($diag['commission_total']), 2, '.', '');
+        } elseif (($diag['final_source'] ?? '') === 'rule' && ($diag['rule_total'] ?? 0) > 0) {
+            $text .= ' ¥' . number_format(floatval($diag['rule_total']), 2, '.', '');
+        }
+        return $text;
+    }
+
     protected function formatFailReason($wxResult, $status)
     {
         if ($status !== 4 || $wxResult === '' || $wxResult === null) {