Add CustomDiv extension to preserve div tags in Jeditor

apps/jingrow/frontend/src/core/pagetype/form/controls/Jeditor.vue

@@ -1,6 +1,6 @@
 <script setup lang="ts">
 import { onMounted, onBeforeUnmount, ref, watch, computed } from 'vue'
-import { Editor, Extension } from '@tiptap/core'
+import { Editor, Extension, Node } from '@tiptap/core'
 import Document from '@tiptap/extension-document'
 import Paragraph from '@tiptap/extension-paragraph'
 import Text from '@tiptap/extension-text'
@@ -67,6 +67,24 @@ let editor: Editor | null = null
 let sourceShowing = false
 let sourceTextarea: HTMLTextAreaElement | null = null
 
+// CustomDiv 扩展：支持 div 标签，避免被转换为 p 标签
+// 关键：content 设置为 'block*' 允许包含其他块级元素（如 heading, paragraph, table 等）
+const CustomDiv = Node.create({
+  name: 'customDiv',
+  group: 'block',
+  content: 'block*',
+  parseHTML() {
+    return [
+      {
+        tag: 'div',
+      },
+    ]
+  },
+  renderHTML({ HTMLAttributes }) {
+    return ['div', HTMLAttributes, 0]
+  },
+})
+
 // FontSize 扩展：对齐 jingrow 实现，基于 TextStyle，提供 setFontSize/unsetFontSize
 // 保留实现以对齐 jingrow；如需启用，加入 extensions
 const FontSize = Extension.create({
@@ -147,7 +165,7 @@ function dropdown(title: string, iconName: string, items: Array<{ label: string;
     menu.appendChild(item)
   })
   btn.onmousedown = (e) => { e.preventDefault(); menu.style.display = menu.style.display === 'block' ? 'none' : 'block' }
-  document.addEventListener('mousedown', (e) => { if (!wrap.contains(e.target as Node)) menu.style.display = 'none' })
+  document.addEventListener('mousedown', (e) => { if (!wrap.contains(e.target as globalThis.Node)) menu.style.display = 'none' })
   btn.appendChild(caret)
   wrap.appendChild(menu)
   return wrap
@@ -606,7 +624,10 @@ function mountControl() {
     content: props.modelValue || '',
     editable: !props.disabled,
     extensions: [
-      Document,
+      Document.extend({
+        content: '(heading | paragraph | blockquote | codeBlock | horizontalRule | customDiv | table | bulletList | orderedList | taskList)+',
+      }),
+      CustomDiv,
       Paragraph,
       Text,
       Bold,