更新 Podfile 以将 iOS 部署目标从 11.0 升级至 13.0；在 XPRoomViewController 中实现统一的消息分发方法，支持 DiffableDataSource 和原有系统的消息处理；新增 XPMessageItem 和 XPMessageDataSourceManager 以支持 DiffableDataSource 的消息管理，优化消息插入和更新逻辑；在 MsRoomMessageMainView 和 XPRoomMessageContainerView 中实现 DiffableDataSource 支持，确保 UI 更新的安全性。

Podfile

@@ -1,5 +1,5 @@
 # Uncomment the next line to define a global platform for your project
- platform :ios, '11.0'
+ platform :ios, '13.0'
 source 'https://mirrors.tuna.tsinghua.edu.cn/git/CocoaPods/Specs.git'
 target 'YuMi' do
   use_frameworks!
@@ -72,7 +72,7 @@ post_install do |installer|
   installer.generated_projects.each do |project|
     project.targets.each do |target|
       target.build_configurations.each do |config|
-            config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '11.0'
+            config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '13.0'
             config.build_settings['DEBUG_INFORMATION_FORMAT'] = 'dwarf-with-dsym'
             config.build_settings['ENABLE_BITCODE'] = 'NO'
            xcconfig_path = config.base_configuration_reference.real_path