refactor(WEB): claudedocs 재정리 및 AuthContext/Zustand/유틸 코드 개선

- claudedocs 폴더 구조 재정리: archive/sessions, guides/migration·mobile·universal-list, refactoring 분류
- 오래된 세션 컨텍스트/체크리스트 문서 정리 (아카이브 이동 또는 삭제)
- AuthContext → authStore(Zustand) 전환 시작, RootProvider 간소화
- GenericCRUDDialog 공통 다이얼로그 컴포넌트 추가
- PermissionDialog 삭제 → GenericCRUDDialog로 대체
- RankDialog/TitleDialog GenericCRUDDialog 기반으로 리팩토링
- toast-utils.ts 삭제 (미사용)
- fileDownload.ts 개선, excel-download.ts 정리
- menuStore/themeStore Zustand 셀렉터 최적화
- useColumnSettings/useTableColumnStore 기능 보강
- 세금계산서/견적/작업자화면/결재 등 소규모 개선

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/hooks/useColumnSettings.ts

@@ -1,5 +1,5 @@
 import { useMemo, useCallback } from 'react';
-import { useTableColumnStore } from '@/stores/useTableColumnStore';
+import { useTableColumnStore, usePageColumnSettings } from '@/stores/useTableColumnStore';
 import type { TableColumn } from '@/components/templates/UniversalListPage/types';
 
 export interface ColumnWithVisibility extends TableColumn {
@@ -14,8 +14,10 @@ interface UseColumnSettingsParams {
 }
 
 export function useColumnSettings({ pageId, columns, alwaysVisibleKeys = [] }: UseColumnSettingsParams) {
-  const store = useTableColumnStore();
-  const settings = store.getPageSettings(pageId);
+  const settings = usePageColumnSettings(pageId);
+  const setColumnWidthAction = useTableColumnStore((s) => s.setColumnWidth);
+  const toggleColumnVisibilityAction = useTableColumnStore((s) => s.toggleColumnVisibility);
+  const resetPageSettingsAction = useTableColumnStore((s) => s.resetPageSettings);
 
   const visibleColumns = useMemo(() => {
     return columns.filter((col) => !settings.hiddenColumns.includes(col.key));
@@ -33,22 +35,22 @@ export function useColumnSettings({ pageId, columns, alwaysVisibleKeys = [] }: U
 
   const setColumnWidth = useCallback(
     (key: string, width: number) => {
-      store.setColumnWidth(pageId, key, width);
+      setColumnWidthAction(pageId, key, width);
     },
-    [store, pageId]
+    [setColumnWidthAction, pageId]
   );
 
   const toggleColumnVisibility = useCallback(
     (key: string) => {
       if (alwaysVisibleKeys.includes(key)) return;
-      store.toggleColumnVisibility(pageId, key);
+      toggleColumnVisibilityAction(pageId, key);
     },
-    [store, pageId, alwaysVisibleKeys]
+    [toggleColumnVisibilityAction, pageId, alwaysVisibleKeys]
   );
 
   const resetSettings = useCallback(() => {
-    store.resetPageSettings(pageId);
-  }, [store, pageId]);
+    resetPageSettingsAction(pageId);
+  }, [resetPageSettingsAction, pageId]);
 
   const hasHiddenColumns = settings.hiddenColumns.length > 0;