feat(编辑能力): 新增画笔和注解创建，完善水印、印章与链接编辑，优化选取和保存体验

ofdgo_editor_pages.go

@@ -28,6 +28,9 @@ func (e *Editor) prunePageReferences(parts map[string][]byte) error {
 	for id := range e.source.pages {
 		removed[id] = true
 	}
+	for id := range e.source.annotationPages {
+		removed[id] = true
+	}
 	for _, page := range e.pages {
 		delete(removed, page.ID)
 	}