fix:get-datetime接口应当包装vo

src/main/java/com/iflytop/colortitration/app/controller/SystemController.java

@@ -2,6 +2,7 @@ package com.iflytop.colortitration.app.controller;
 
 import com.iflytop.colortitration.app.core.state.DeviceState;
 import com.iflytop.colortitration.app.model.dto.TimeSetDTO;
+import com.iflytop.colortitration.app.model.vo.TimeResponseVO;
 import com.iflytop.colortitration.app.service.SystemService;
 import com.iflytop.colortitration.common.result.Result;
 import io.swagger.v3.oas.annotations.Operation;
@@ -38,7 +39,7 @@ public class SystemController {
     @Operation(summary = "获取当前系统时间")
     @GetMapping("/get-datetime")
     public Result<?> getDatetime() {
-        return Result.success(Instant.now().toEpochMilli());
+        return Result.success(new TimeResponseVO(Instant.now().toEpochMilli()));
     }
 
 }

src/main/java/com/iflytop/colortitration/app/model/vo/TimeResponseVO.java

@@ -0,0 +1,16 @@
+package com.iflytop.colortitration.app.model.vo;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Data;
+
+@Data
+public class TimeResponseVO {
+
+    @Schema(description = "当前系统时间的 UTC 毫秒时间戳")
+    private long epochMilli;
+
+
+    public TimeResponseVO(long epochMilli) {
+        this.epochMilli = epochMilli;
+    }
+}