docs: 更新README，修正Spring Boot版本，添加可选模块说明; fix: 修复AI对话页面Transition警告

yushu-uivue3/src/views/system/ai/chat/index.vue

@@ -271,12 +271,12 @@
         </div>
       </div>
     </div>
+    
+    <!-- 图片预览对话框 -->
+    <el-dialog v-model="showImagePreview" title="图片预览" width="800px" append-to-body>
+      <img :src="previewImageUrl" style="width: 100%; max-height: 70vh; object-fit: contain;" />
+    </el-dialog>
   </div>
-  
-  <!-- 图片预览对话框 -->
-  <el-dialog v-model="showImagePreview" title="图片预览" width="800px" append-to-body>
-    <img :src="previewImageUrl" style="width: 100%; max-height: 70vh; object-fit: contain;" />
-  </el-dialog>
 </template>
 
 <script setup name="AiChat">