refactor: 重大架构升级 — HomeID/RoomID int64化 + 设备驱动重构 + 结构化日志

主要变更：

**类型系统重构**
- HomeInfo.ID/RoomInfo.ID/HomeID 从 string 改为 int64，json tag 使用 ,string
- GetHome/GetRooms/GetRoomDevices 接口同步修改
- 新增 int64FromStr 工具函数，更新 parseHomeInfo 解析逻辑

**新增 Speaker 设备**
- 新增 KindSpeaker 类型
- classify 映射覆盖 speaker/bluetooth-speaker/alarm-clock/media-player/playback/music

**设备驱动重构**
- AC 驱动彻底重写：从硬编码常量改为基于 SPEC ValueList 的动态 valMapper
- 所有设备(Fan/Humidifier/Light/OccupancySensor/Switch/TempHumiditySensor/Thermostat/Vacuum/WaterHeater/Cover)新增 GetState() 和 FetchState(ctx) 接口
- base.go 新增 specResolver.format() 方法

**MIoT 模块增强**
- MIoTClient 新增 homeIDs 字段，支持按家庭过滤设备
- RefreshDevices 支持 homeIDs 参数
- SpecStdLib 引入 logger.Logger，log.Printf 全部迁移为结构化日志

**其他**
- Config 新增 RedirectURL 和 HomeIDs 字段
- AuthInfo.ExpiresIn 类型从 int 改为 int32
- UUID 生成简化为 hex.EncodeToString
- 新增 github.com/sirupsen/logrus 依赖
- .gitignore 新增 examples/*/data/ 忽略规则
- 删除已提交的 config.json 敏感配置

xiaomi/devices/occupancy_sensor.go

@@ -14,6 +14,8 @@ type OccupancySensor interface {
 	GetIlluminance(ctx context.Context) (float64, error)
 
 	OnStateChanged(handler func(occupied bool, illuminance float64)) (string, error)
+	GetState() (bool, float64)
+	FetchState(ctx context.Context) (bool, float64, error)
 }
 
 type occupancyDevice struct {
@@ -71,3 +73,32 @@ func (d *occupancyDevice) OnStateChanged(handler func(occupied bool, illuminance
 		handler(occ, lux)
 	})
 }
+
+func (d *occupancyDevice) GetState() (bool, float64) { 
+	b, _ := d.stateCache[0].(bool)
+	f, _ := d.stateCache[1].(float64)
+	return b, f
+}
+func (d *occupancyDevice) FetchState(ctx context.Context) (bool, float64, error) {
+	keys := []xiaomi.PropKey{}
+	if d.propOccupancy.valid { keys = append(keys, xiaomi.PropKey{DID: d.info.DID, SIID: d.propOccupancy.siid, PIID: d.propOccupancy.piid}) }
+	if d.propIlluminance.valid { keys = append(keys, xiaomi.PropKey{DID: d.info.DID, SIID: d.propIlluminance.siid, PIID: d.propIlluminance.piid}) }
+	props, err := d.client.GetProps(ctx, keys)
+	if err != nil {
+		b, _ := d.stateCache[0].(bool)
+		f, _ := d.stateCache[1].(float64)
+		return b, f, err
+	}
+	var occupied bool
+	var illuminance float64
+	for _, p := range props {
+		switch {
+		case d.propOccupancy.valid && p.SIID == d.propOccupancy.siid && p.PIID == d.propOccupancy.piid:
+			occupied, _ = p.Value.(bool)
+		case d.propIlluminance.valid && p.SIID == d.propIlluminance.siid && p.PIID == d.propIlluminance.piid:
+			illuminance = toFloat(p.Value)
+		}
+	}
+	d.stateCache = [2]interface{}{occupied, illuminance}
+	return occupied, illuminance, nil
+}