fix: [misc] 거래처 카운트 수정 + 생산현황판 통계 API 교체

- 거래처 목록 카운트를 stats API 호출로 교체
- 생산현황판 대시보드 통계를 work-orders/stats API 활용

src/app/[locale]/(protected)/sales/client-management-sales-admin/page.tsx

@@ -94,22 +94,17 @@ export default function CustomerAccountManagementPage() {
   // 전체 통계 로드 (최초 1회만)
   const loadTotalStats = useCallback(async () => {
     try {
-      // 전체 데이터 조회 (검색 조건 없이)
-      const response = await fetch("/api/proxy/clients?size=1000");
+      const response = await fetch("/api/proxy/clients/stats");
       if (response.ok) {
         const result = await response.json();
         if (result.success && result.data) {
-          const allClients = result.data.data || [];
+          const data = result.data;
           setTotalStats({
-            total: result.data.total || allClients.length,
-            purchase: allClients.filter((c: { client_type?: string }) =>
-              c.client_type === "매입" || c.client_type === "매입매출"
-            ).length,
-            sales: allClients.filter((c: { client_type?: string }) =>
-              c.client_type === "매출" || c.client_type === "매입매출"
-            ).length,
-            active: allClients.filter((c: { is_active?: boolean }) => c.is_active === true).length,
-            inactive: allClients.filter((c: { is_active?: boolean }) => c.is_active === false).length,
+            total: data.total ?? 0,
+            purchase: (data.purchase ?? 0) + (data.both ?? 0),
+            sales: (data.sales ?? 0) + (data.both ?? 0),
+            active: data.active ?? 0,
+            inactive: data.inactive ?? 0,
           });
         }
       }

src/components/production/ProductionDashboard/actions.ts

@@ -113,6 +113,18 @@ export async function getProcessOptions(): Promise<{
   };
 }
 
+// ===== 작업지시 통계 조회 (백엔드 stats API) =====
+interface WorkOrderStatsApi {
+  total: number;
+  unassigned: number;
+  pending: number;
+  waiting: number;
+  in_progress: number;
+  completed: number;
+  shipped: number;
+  by_process: Record<string, number>;
+}
+
 // ===== 대시보드 데이터 조회 =====
 export async function getDashboardData(processCode?: string): Promise<{
   success: boolean;
@@ -128,30 +140,49 @@ export async function getDashboardData(processCode?: string): Promise<{
     stats: { total: 0, waiting: 0, inProgress: 0, completed: 0, urgent: 0, delayed: 0 },
   };
 
-  const result = await executeServerAction<{ data: WorkOrderApiItem[] }>({
-    url: buildApiUrl('/api/v1/work-orders', {
-      per_page: 100,
-      process_code: processCode && processCode !== 'all' ? processCode : undefined,
+  // 통계와 목록을 병렬 조회
+  const [statsResult, listResult] = await Promise.all([
+    executeServerAction<WorkOrderStatsApi>({
+      url: buildApiUrl('/api/v1/work-orders/stats'),
+      errorMessage: '통계 조회에 실패했습니다.',
     }),
-    errorMessage: '데이터 조회에 실패했습니다.',
-  });
+    executeServerAction<{ data: WorkOrderApiItem[] }>({
+      url: buildApiUrl('/api/v1/work-orders', {
+        per_page: 100,
+        process_code: processCode && processCode !== 'all' ? processCode : undefined,
+      }),
+      errorMessage: '데이터 조회에 실패했습니다.',
+    }),
+  ]);
 
-  if (!result.success || !result.data) {
-    return { ...emptyResult, error: result.error };
+  if (!listResult.success || !listResult.data) {
+    return { ...emptyResult, error: listResult.error };
   }
 
-  const apiData = result.data.data || [];
+  const apiData = listResult.data.data || [];
   const workOrders = apiData.map(transformToProductionFormat);
 
-  // 통계 계산
-  const stats: DashboardStats = {
-    total: workOrders.length,
-    waiting: workOrders.filter(o => o.status === 'waiting').length,
-    inProgress: workOrders.filter(o => o.status === 'inProgress').length,
-    completed: workOrders.filter(o => o.status === 'completed').length,
-    urgent: workOrders.filter(o => o.isUrgent).length,
-    delayed: workOrders.filter(o => o.isDelayed).length,
-  };
+  // 통계: 백엔드 stats API 기반 (정확한 전체 카운트)
+  // urgent/delayed는 목록 데이터에서 계산 (stats API에 미포함)
+  const apiStats = statsResult.success && statsResult.data ? statsResult.data : null;
+  const stats: DashboardStats = apiStats
+    ? {
+        total: apiStats.total,
+        waiting: (apiStats.unassigned ?? 0) + (apiStats.pending ?? 0) + (apiStats.waiting ?? 0),
+        inProgress: apiStats.in_progress ?? 0,
+        completed: (apiStats.completed ?? 0) + (apiStats.shipped ?? 0),
+        urgent: workOrders.filter(o => o.isUrgent).length,
+        delayed: workOrders.filter(o => o.isDelayed).length,
+      }
+    : {
+        // stats API 실패 시 목록 데이터 기반 폴백
+        total: workOrders.length,
+        waiting: workOrders.filter(o => o.status === 'waiting').length,
+        inProgress: workOrders.filter(o => o.status === 'inProgress').length,
+        completed: workOrders.filter(o => o.status === 'completed').length,
+        urgent: workOrders.filter(o => o.isUrgent).length,
+        delayed: workOrders.filter(o => o.isDelayed).length,
+      };
 
   // 작업자별 현황 집계
   const workerMap = new Map<string, WorkerStatus>();