chore(WEB): PermissionManagement 오류 수정 및 claudedocs 폴더 정리

- PermissionManagement externalSelection 콜백 함수 오류 수정
  - setSelectedItems → onToggleSelection, onToggleSelectAll, getItemId 변경
- claudedocs 문서 폴더별 정리 (26개 파일)
  - dashboard/, guides/, settings/, construction/, sales/ 등

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

src/components/settings/PermissionManagement/index.tsx

@@ -512,7 +512,26 @@ export function PermissionManagement() {
       initialTotalCount={roles.length}
       externalSelection={{
         selectedItems,
-        setSelectedItems,
+        onToggleSelection: (id: string) => {
+          setSelectedItems(prev => {
+            const newSet = new Set(prev);
+            if (newSet.has(id)) {
+              newSet.delete(id);
+            } else {
+              newSet.add(id);
+            }
+            return newSet;
+          });
+        },
+        onToggleSelectAll: (ids: string[]) => {
+          setSelectedItems(prev => {
+            if (prev.size === ids.length) {
+              return new Set();
+            }
+            return new Set(ids);
+          });
+        },
+        getItemId: (item: Role) => item.id,
       }}
       externalTab={{
         activeTab,