fix(agent-calculate): 정산 합계 계산 경로와 회귀 테스트를 보강한다

src/main/kotlin/kr/co/vividnext/sodalive/partner/agent/calculate/AgentCalculateService.kt

@@ -199,7 +199,6 @@ class AgentCalculateService(
 
         val totalCount = totalCountLoader(startDate, endDate)
         val total = totalRowsLoader(startDate, endDate)
-            .toMergedResponseItems()
             .toResponseTotal()
         val items = pagedRowsLoader(startDate, endDate)
             .toMergedResponseItems()

src/main/kotlin/kr/co/vividnext/sodalive/partner/agent/calculate/GetAgentCreatorSettlementSummaryQueryData.kt

@@ -75,3 +75,30 @@ fun List<GetAgentCreatorSettlementSummaryQueryData>.toMergedResponseItems(): Lis
             }
         }
 }
+
+fun List<GetAgentCreatorSettlementSummaryQueryData>.toResponseTotal(): GetAgentSettlementByCreatorTotal {
+    return fold(
+        GetAgentSettlementByCreatorTotal(
+            count = 0,
+            totalCan = 0,
+            krw = 0,
+            fee = 0,
+            settlementAmount = 0,
+            tax = 0,
+            depositAmount = 0,
+            agentSettlementAmount = 0
+        )
+    ) { total, row ->
+        val item = row.toResponseItem()
+        total.copy(
+            count = total.count + item.count,
+            totalCan = total.totalCan + item.totalCan,
+            krw = total.krw + item.krw,
+            fee = total.fee + item.fee,
+            settlementAmount = total.settlementAmount + item.settlementAmount,
+            tax = total.tax + item.tax,
+            depositAmount = total.depositAmount + item.depositAmount,
+            agentSettlementAmount = total.agentSettlementAmount + item.agentSettlementAmount
+        )
+    }
+}