重构：优化订单通知消息标签，支持动态显示订单类型

- 新增 OrderMessageLabelResolver 用于解析订单场景标签
- 修改微信公众号下单通知，根据下单类型(随机单/指定单/打赏/礼物)显示对应标签
- 更新 WxCustomMpService 接口，传递 placeType 和 rewardType 参数
- 完善相关单元测试和 Mock 配置

play-admin/src/test/java/com/starry/admin/api/MockWxMpServiceConfig.java

@@ -0,0 +1,31 @@
+package com.starry.admin.api;
+
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+import me.chanjar.weixin.mp.api.WxMpService;
+import me.chanjar.weixin.mp.api.WxMpTemplateMsgService;
+import org.mockito.Mockito;
+import org.springframework.boot.test.context.TestConfiguration;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Primary;
+import org.springframework.context.annotation.Profile;
+
+/**
+ * Provides stubbed WeChat MP services in the apitest profile so integration tests never hit external APIs.
+ */
+@TestConfiguration
+@Profile("apitest")
+public class MockWxMpServiceConfig {
+
+    @Bean
+    @Primary
+    public WxMpService wxMpService() {
+        WxMpService service = mock(WxMpService.class, Mockito.RETURNS_DEEP_STUBS);
+        WxMpTemplateMsgService templateMsgService = mock(WxMpTemplateMsgService.class);
+        when(service.getTemplateMsgService()).thenReturn(templateMsgService);
+        when(service.switchoverTo(Mockito.anyString())).thenReturn(service);
+        when(service.switchover(Mockito.anyString())).thenReturn(true);
+        return service;
+    }
+}