chore: 初始开源发布

iotlcm-openapi：对外 OpenAPI 网关（V3 接口 + 旧版兼容接口）。

- Go module：iotlcm-openapi → git.5iot.com/iotlcm-public/iotlcm-openapi（178 文件）
- 凭据与地址脱敏：JWT signingKey、MySQL DSN、Redis 口令、
  RabbitMQ DSN 全部改为 ${*} 占位；私网 IP → 文档地址段
- 7 处真实手机号 → 合法 11 位编造号
- 启动 banner 统一 IOTLCM 方块字 + 社区惯例署名
- 移除内部资产：CI 触发器
- Dockerfile 改用公共基础镜像，移除 GOPRIVATE 内网设置
- README 重写（原为 GoFrame 模板占位文案），补 Apache-2.0 LICENSE，
  LF 行尾 + .gitattributes

utility/tree/tree.go

@@ -0,0 +1,109 @@
+// package tree
+// @Link  https://github.com/xiujiecn/xiu-admin
+// @Copyright  Copyright (c) 2025 LiXiujie
+// @Author  Lxj <li@xiujie.cn>
+// @License  https://github.com/xiujiecn/xiu-admin/blob/master/LICENSE
+package tree
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/gogf/gf/v2/util/gconv"
+)
+
+const (
+	treeDefaultId       = "id"       // 树ID
+	treeDefaultPid      = "pid"      // 上级树ID
+	treeDefaultChildren = "children" // 下级属性
+	treeBeginCut        = "tr_"      // 树标识开头
+	treeEndCut          = " "        // 树标识结尾
+)
+
+// GenOption 生成选项
+type GenOption struct {
+	IdField       string
+	PidField      string
+	ChildrenField string
+}
+
+// GenLabel 生成关系树标识
+func GenLabel(basic string, appendId int64) string {
+	return fmt.Sprintf("%v%v%v%v", basic, treeBeginCut, appendId, treeEndCut)
+}
+
+// GetIdLabel 获取指定Id的树标签
+func GetIdLabel(id int64) string {
+	return fmt.Sprintf("%v%v%v", treeBeginCut, id, treeEndCut)
+}
+
+// GetIds 获取上级ID集合
+func GetIds(tree string) (ids []int64) {
+	idsStr := strings.Split(tree, treeEndCut)
+	if len(idsStr) == 0 {
+		return
+	}
+
+	for _, v := range idsStr {
+		newId := gconv.Int64(strings.ReplaceAll(v, treeBeginCut, ""))
+		if newId > 0 {
+			ids = append(ids, newId)
+		}
+	}
+	return
+}
+
+// GenTree 生成关系树
+func GenTree(menus []map[string]interface{}) (realMenu []map[string]interface{}) {
+	return GenTreeWithField(menus, GenOption{
+		IdField:       treeDefaultId,
+		PidField:      treeDefaultPid,
+		ChildrenField: treeDefaultChildren,
+	})
+}
+
+// GenTreeWithField 生成关系树 自定义生成属性
+func GenTreeWithField(menus []map[string]interface{}, op GenOption) (realMenu []map[string]interface{}) {
+	if len(menus) < 1 {
+		return
+	}
+
+	minPid := GetMinPid(menus, op.PidField)
+	formatMenu := make(map[int]map[string]interface{})
+	for _, m := range menus {
+		formatMenu[gconv.Int(m[op.IdField])] = m
+		if gconv.Int(m[op.PidField]) == minPid {
+			realMenu = append(realMenu, m) // 需要返回的顶级菜单
+		}
+	}
+	// 得益于都是地址操作,可以直接往父级塞
+	for _, m := range formatMenu {
+		if formatMenu[gconv.Int(m[op.PidField])] == nil {
+			continue
+		}
+		if formatMenu[gconv.Int(m[op.PidField])][op.ChildrenField] == nil {
+			formatMenu[gconv.Int(m[op.PidField])][op.ChildrenField] = []map[string]interface{}{}
+		}
+
+		formatMenu[gconv.Int(m[op.PidField])][op.ChildrenField] = append(formatMenu[gconv.Int(m[op.PidField])][op.ChildrenField].([]map[string]interface{}), m)
+	}
+	return
+}
+
+func GetMinPid(menus []map[string]interface{}, pidField string) int {
+	index := -1
+	for _, m := range menus {
+		if index == -1 {
+			index = gconv.Int(m[pidField])
+			continue
+		}
+		if gconv.Int(m[pidField]) < index {
+			index = gconv.Int(m[pidField])
+		}
+	}
+
+	if index == -1 {
+		return 0
+	}
+	return index
+}