feat: 생산관리 메인 메뉴 (입고/출고와 동일 패턴)

- /pop/production → ProductionMain (아이콘 메뉴: 공정실행/작업지시/생산현황/불량관리/실적조회)
- /pop/production/process → WorkOrderList (기존 공정 목록 이동)
- KPI 실데이터 연동 (작업지시 목록 API)
- amber gradient 테마, 최근 생산활동
- cmux 검증 완료

frontend/app/(pop)/pop/production/page.tsx

@@ -1,12 +1,12 @@
 "use client";
 
 import { PopShell } from "@/components/pop/hardcoded";
-import { WorkOrderList } from "@/components/pop/hardcoded/production";
+import { ProductionMain } from "@/components/pop/hardcoded/production";
 
 export default function ProductionPage() {
   return (
-    <PopShell showBanner={false} title="생산관리" showBack>
-      <WorkOrderList />
+    <PopShell showBanner={false} title="생산관리">
+      <ProductionMain />
     </PopShell>
   );
 }

frontend/app/(pop)/pop/production/process/page.tsx

@@ -0,0 +1,12 @@
+"use client";
+
+import { PopShell } from "@/components/pop/hardcoded";
+import { WorkOrderList } from "@/components/pop/hardcoded/production";
+
+export default function ProductionProcessPage() {
+  return (
+    <PopShell showBanner={false} title="공정실행" showBack>
+      <WorkOrderList />
+    </PopShell>
+  );
+}