feat: 初始化小米 IoT (MIoT) 智能家居 Go 库

- 实现 MIoT 客户端核心功能（MQTT 连接、设备管理、属性读写）
- 支持云端 API 调用与局域网设备发现（mDNS）
- 集成国际化（i18n）多语言支持
- 添加 MIoT 设备规约解析器（spec_parser）
- 包含单元测试与使用示例

miot/examples/cloud_devices/main.go

@@ -0,0 +1,124 @@
+// E2 — Cloud device management example.
+// Demonstrates: get user info → home list → device list → read/write prop → do action.
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"miot"
+	"miot/examples/config"
+)
+
+func main() {
+	// 1. Load config
+	cfg, err := config.LoadConfig(config.DefaultPath())
+	if err != nil {
+		fmt.Printf("Load config error: %v\n", err)
+		return
+	}
+	if cfg.AuthInfo.AccessToken == "" {
+		fmt.Println("请先运行 E1 cloud_oauth 获取 token")
+		os.Exit(1)
+	}
+
+	// 2. Create HTTP client
+	http, err := miot.NewMIoTHttpClient(cfg.CloudServer, miot.OAUTH2_CLIENT_ID, cfg.AuthInfo.AccessToken)
+	if err != nil {
+		fmt.Printf("Create HTTP client error: %v\n", err)
+		return
+	}
+	defer http.Close()
+
+	// 3. Get user info
+	user, err := http.GetUserInfo()
+	if err != nil {
+		fmt.Printf("GetUserInfo error: %v\n", err)
+	} else {
+		fmt.Println("=== 用户信息 ===")
+		printMap(user)
+	}
+
+	// 4. Get home list
+	homes, err := http.GetHomeInfos()
+	if err != nil {
+		fmt.Printf("GetHomeInfos error: %v\n", err)
+		return
+	}
+	fmt.Println("\n=== 家庭列表 ===")
+	if uid, ok := homes["uid"].(string); ok {
+		fmt.Printf("UID: %s\n", uid)
+	}
+	if homeList, ok := homes["home_list"].(map[string]interface{}); ok {
+		for hid, hi := range homeList {
+			if h, ok := hi.(map[string]interface{}); ok {
+				fmt.Printf("  Home: %s, Name: %v\n", hid, h["home_name"])
+			}
+		}
+	}
+
+	// 5. Get device list
+	devices, err := http.GetDevices(nil)
+	if err != nil {
+		fmt.Printf("GetDevices error: %v\n", err)
+		return
+	}
+
+	devMap, _ := devices["devices"].(map[string]map[string]interface{})
+	if len(devMap) == 0 {
+		fmt.Println("没有找到设备")
+		return
+	}
+
+	fmt.Println("\n=== 设备列表 ===")
+	var firstDID string
+	for did, d := range devMap {
+		fmt.Printf("  DID: %s, Name: %v, Model: %v, Online: %v\n",
+			did, d["name"], d["model"], d["online"])
+		if firstDID == "" {
+			firstDID = did
+		}
+	}
+
+	// 6. Read a property (use hardcoded siid=2, piid=1 — power for many devices)
+	siid := 2
+	piid := 1
+	fmt.Printf("\n=== 读取属性 (did=%s, siid=%d, piid=%d) ===\n", firstDID, siid, piid)
+	prop, err := http.GetProp(firstDID, siid, piid)
+	if err != nil {
+		fmt.Printf("GetProp error: %v\n", err)
+	} else {
+		fmt.Printf("属性值: %v\n", prop["value"])
+	}
+
+	// 7. Set a property (toggle power: 0→1)
+	fmt.Printf("\n=== 设置属性 (did=%s, siid=%d, piid=%d, value=false) ===\n", firstDID, siid, piid)
+	setResult, err := http.SetProp([]miot.PropParam{
+		{DID: firstDID, Siid: siid, Piid: piid, Value: false},
+	})
+	if err != nil {
+		fmt.Printf("SetProp error: %v\n", err)
+	} else {
+		for _, r := range setResult {
+			fmt.Printf("  DID: %s, Code: %d, Value: %v\n", r.DID, r.Code, r.Value)
+		}
+	}
+
+	// 8. Do an action (toggle: siid=2, aiid=1)
+	aiid := 1
+	fmt.Printf("\n=== 执行动作 (did=%s, siid=%d, aiid=%d) ===\n", firstDID, siid, aiid)
+	actionResult, err := http.DoAction(firstDID, siid, aiid, []interface{}{
+		map[string]interface{}{"value": true},
+	})
+	if err != nil {
+		fmt.Printf("DoAction error: %v\n", err)
+	} else {
+		fmt.Printf("动作结果: %v\n", actionResult)
+	}
+}
+
+func printMap(m map[string]interface{}) {
+	for k, v := range m {
+		fmt.Printf("  %s: %v\n", k, v)
+	}
+}