Merge remote-tracking branch 'origin/test' into test

cash-service/system-service/pom.xml

@@ -17,6 +17,21 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
     <dependencies>
+        <!-- MQTT 依赖：Spring Integration MQTT -->
+        <dependency>
+            <groupId>org.springframework.integration</groupId>
+            <artifactId>spring-integration-mqtt</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-all</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-codec-mqtt</artifactId>
+        </dependency>
 
     </dependencies>