feat: 完善 AC"set 后回读"机制 — 目标聚合 + 防抖重试验证

**回读目标聚合（recordReadback）**
- 所有 set 方法（TurnOn/TurnOff/SetMode/SetTargetTemp/SetFanSpeed/
  SetSwing/SetTargetHumidity/SetAuxHeat/SetEco）成功后记录目标值 rbTarget
- 同属性目标覆盖、不同属性追加，连续 set 自动聚合

**防抖 + 重试验证（readbackLoop）**
- 静默窗口 readbackIdle=3s：等待最后一次 set 无新操作才开始验证
- 未命中目标时按 readbackRetryInterval=3s 重试，上限 readbackMaxRetries=5
- 整体超时 readbackTimeout=30s，防云端卡住导致回读永久挂起
- 命中后逐字段回调 OnPropsChanged 注册的 handler（与 MQTT 推送同语义）
- rbValueEqual 数值比较用 epsilon=0.01，bool/string 直接相等

**白名单配置透传**
- xiaomi.Config 新增 ReadbackModels 白名单（留空 = 全部不回读，默认）
- Client 新增 NeedReadback(model) 判定 + Logger() 访问器
- bridge.Pool.NewPool(readbackModels...) 透传；newBridge 传入 Client 配置

**其他**
- bridge 设备创建失败（Warn）与不支持跳过（Debug）分别记录日志

bridge/bridge.go

@@ -45,13 +45,18 @@ type OccupancyProps struct {
 
 // Pool 全局路由：id → Bridge。
 type Pool struct {
-	mu    sync.RWMutex
-	items map[int64]*Bridge
+	mu             sync.RWMutex
+	items          map[int64]*Bridge
+	readbackModels []string // 需要 set 后回读的型号列表（透传到 xiaomi.Config）
 }
 
-// NewPool 创建 Pool。
-func NewPool() *Pool {
-	return &Pool{items: make(map[int64]*Bridge)}
+// NewPool 创建 Pool。readbackModels 为需要"set 后回读"的设备型号列表（可选，默认空）。
+func NewPool(readbackModels ...[]string) *Pool {
+	var models []string
+	if len(readbackModels) > 0 {
+		models = readbackModels[0]
+	}
+	return &Pool{items: make(map[int64]*Bridge), readbackModels: models}
 }
 
 // Get 按 id 查找。
@@ -69,7 +74,7 @@ func (p *Pool) Add(ctx context.Context, id int64, uuid string, auth xiaomi.AuthI
 	if _, exists := p.items[id]; exists {
 		return nil, fmt.Errorf("bridge: %d already exists", id)
 	}
-	b, err := newBridge(ctx, id, uuid, auth, dataDir, homeIDs)
+	b, err := newBridge(ctx, id, uuid, auth, dataDir, homeIDs, p.readbackModels)
 	if err != nil {
 		return nil, err
 	}
@@ -115,14 +120,15 @@ type Bridge struct {
 	onOnlineChanged func(id int64, did string, online bool)
 }
 
-func newBridge(ctx context.Context, id int64, uuid string, auth xiaomi.AuthInfo, dataDir string, homeIDs []int64) (*Bridge, error) {
+func newBridge(ctx context.Context, id int64, uuid string, auth xiaomi.AuthInfo, dataDir string, homeIDs []int64, readbackModels []string) (*Bridge, error) {
 	idStr := fmt.Sprintf("%d", id)
 	client, err := xiaomi.NewClient(ctx, xiaomi.Config{
-		AuthInfo: auth,
-		DataDir:  dataDir,
-		UUID:     uuid,
-		UID:      idStr,
-		HomeIDs:  homeIDs,
+		AuthInfo:       auth,
+		DataDir:        dataDir,
+		UUID:           uuid,
+		UID:            idStr,
+		HomeIDs:        homeIDs,
+		ReadbackModels: readbackModels,
 	})
 	if err != nil {
 		return nil, fmt.Errorf("bridge: %w", err)
@@ -144,6 +150,11 @@ func newBridge(ctx context.Context, id int64, uuid string, auth xiaomi.AuthInfo,
 	for _, info := range devList {
 		d, createErr := devices.Create(client, info)
 		if createErr != nil || d == nil {
+			if createErr != nil {
+				b.lgr.Warnf("[bridge] %d: create device %s (%s) failed: %v", id, info.DID, info.Model, createErr)
+			} else {
+				b.lgr.Debugf("[bridge] %d: device %s (%s) unsupported, skipped", id, info.DID, info.Model)
+			}
 			continue
 		}
 		b.dv[info.DID] = d