워터마크를 전체 페이지 공유 방식으로 변경

frontend/contexts/ReportDesignerContext.tsx

@@ -1,7 +1,7 @@
 "use client";
 
 import { createContext, useContext, useState, useCallback, ReactNode, useEffect, useRef } from "react";
-import { ComponentConfig, ReportDetail, ReportLayout, ReportPage, ReportLayoutConfig } from "@/types/report";
+import { ComponentConfig, ReportDetail, ReportLayout, ReportPage, ReportLayoutConfig, WatermarkConfig } from "@/types/report";
 import { reportApi } from "@/lib/api/reportApi";
 import { useToast } from "@/hooks/use-toast";
 import { v4 as uuidv4 } from "uuid";
@@ -40,6 +40,7 @@ interface ReportDesignerContextType {
   reorderPages: (sourceIndex: number, targetIndex: number) => void;
   selectPage: (pageId: string) => void;
   updatePageSettings: (pageId: string, settings: Partial<ReportPage>) => void;
+  updateWatermark: (watermark: WatermarkConfig | undefined) => void; // 전체 페이지 공유 워터마크
 
   // 컴포넌트 (현재 페이지)
   components: ComponentConfig[]; // currentPage의 components (읽기 전용)
@@ -988,10 +989,19 @@ export function ReportDesignerProvider({ reportId, children }: { reportId: strin
 
   const updatePageSettings = useCallback((pageId: string, settings: Partial<ReportPage>) => {
     setLayoutConfig((prev) => ({
+      ...prev,
       pages: prev.pages.map((page) => (page.page_id === pageId ? { ...page, ...settings } : page)),
     }));
   }, []);
 
+  // 전체 페이지 공유 워터마크 업데이트
+  const updateWatermark = useCallback((watermark: WatermarkConfig | undefined) => {
+    setLayoutConfig((prev) => ({
+      ...prev,
+      watermark,
+    }));
+  }, []);
+
   // 리포트 및 레이아웃 로드
   const loadLayout = useCallback(async () => {
     setIsLoading(true);
@@ -1471,6 +1481,7 @@ export function ReportDesignerProvider({ reportId, children }: { reportId: strin
     reorderPages,
     selectPage,
     updatePageSettings,
+    updateWatermark,
 
     // 컴포넌트 (현재 페이지)
     components,