feat: 从黄果 NET hgdjnet-server 9bfbafe 导入 HKDJ 官网后端

来源：hgdjnet-server 9bfbafe10d417deea959bd53117bc88a10e60a83
项目身份 HKDJ / JHA-216，独立官网仓库，Jenkins 守卫键 hkdjnet
测试目录 /server/hkdj_net，App/Web API 30331/30332

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

pub/common/utils/uasplit.go

@@ -0,0 +1,30 @@
+package utils
+
+import (
+	"hkdj-web-server/pub/common/enum/consts"
+	"strings"
+)
+
+func UASplit(useragent string) (phoneModel string, phoneSys string, appVer string) {
+	if useragent == "" {
+		return
+	}
+	infos := strings.Split(useragent, ";")
+	if len(infos) != 3 {
+		return
+	}
+	phoneinfos := strings.Split(strings.Trim(infos[1], " "), " ")
+	if len(phoneinfos) == 2 {
+		phoneModel = strings.Trim(phoneinfos[0], " ")
+		phoneSys = strings.Trim(phoneinfos[1], " ")
+	}
+	appVer = strings.Trim(infos[2], " ")
+	return
+}
+
+func UADeviceType(ua string) string {
+	if strings.Contains(ua, "iPhone") {
+		return consts.IOS
+	}
+	return consts.Android
+}