refactor(logger): 日志改用 logrus 全局包级调用，移除 Logger 注入接口

为什么：并入宿主项目后须与宿主日志体系一致——宿主统一用 pkg/logger 初始化
logrus 全局实例并直接 logrus.Xxx 包级调用；包一层 Logger 接口会让 logrus 的
caller 定位（报告调用文件:行号）失准。

改动：
- 删除 logger 包（Logger 接口 / Default / SetDefault，默认本就是 logrus.StandardLogger）
- 11 个结构体移除 lgr logger.Logger 字段、SetLogger 方法及构造中的 lgr 初始化
- 192 处 lgr.Xxxf 调用改为 logrus.Xxxf，日志消息文本保持不变
- xiaomi.Client 移除 Logger() 访问器，air_conditioner 回读日志去掉判空调用直连 logrus
- miot_i18n.go 两处标准库 log.Printf 改为 logrus.Errorf，统一日志出口
- go.mod：logrus 从 indirect 提升为直接依赖
- goimports/goformat 全树规范化：此前部分文件未 gofmt（单行 if、对齐），本次顺带
  格式化，纯空白/换行变化，无逻辑改动

验证：go build / go vet / go test ./... 全部通过（bridge、miot、xiaomi、devices、specs）

miot/miot_client_device.go

@@ -8,6 +8,8 @@ import (
 	"regexp"
 	"strings"
 	"time"
+
+	"github.com/sirupsen/logrus"
 )
 
 // subDevPattern matches .s\d+ suffix for sub-devices.
@@ -39,7 +41,7 @@ func (c *MIoTClient) getOrCreateDevice(did string, info map[string]interface{})
 
 	spec, err := c.specParser.Parse(urn, model)
 	if err != nil {
-		c.lgr.Errorf("[MIoTClient] getOrCreateDevice: SPEC parse failed for %s (%s/%s): %v\n", did, urn, model, err)
+		logrus.Errorf("[MIoTClient] getOrCreateDevice: SPEC parse failed for %s (%s/%s): %v\n", did, urn, model, err)
 		return nil
 	}
 
@@ -169,7 +171,7 @@ func (c *MIoTClient) RefreshDevices(homeIDs []string) error {
 			} else {
 				c.deviceListCache[did] = cloneMap(info)
 			}
-			c.lgr.Debugf("[MIoTClient] Device added: %s (%v)\n", did, info["name"])
+			logrus.Debugf("[MIoTClient] Device added: %s (%v)\n", did, info["name"])
 			changed = true
 		} else {
 			// 检测并同步所有变更字段（name/model/nickname 等）
@@ -196,7 +198,7 @@ func (c *MIoTClient) RefreshDevices(homeIDs []string) error {
 		c.mu.Lock()
 		for _, did := range removed {
 			delete(c.devices, did)
-			c.lgr.Infof("[MIoTClient] Device removed: %s\n", did)
+			logrus.Infof("[MIoTClient] Device removed: %s\n", did)
 		}
 		c.mu.Unlock()
 		// 取消该设备在云/网关/局域网的订阅（三源均已清空 → 内部会退订）
@@ -224,7 +226,7 @@ func (c *MIoTClient) RefreshDevices(homeIDs []string) error {
 		}
 		deviceKey := fmt.Sprintf("%s_%s", c.uid, c.cloudServer)
 		if err := c.storage.Save("miot_devices", deviceKey, deviceListForStorage); err != nil {
-			c.lgr.Warnf("[MIoTClient] Warning: failed to save devices: %v\n", err)
+			logrus.Warnf("[MIoTClient] Warning: failed to save devices: %v\n", err)
 		}
 	}
 
@@ -233,7 +235,7 @@ func (c *MIoTClient) RefreshDevices(homeIDs []string) error {
 		c.ShowDevicesChangedNotify()
 	}
 
-	c.lgr.Infof("[MIoTClient] Devices refreshed: cloud=%d, cache=%d\n", len(cloudDevices), len(c.deviceListCache))
+	logrus.Infof("[MIoTClient] Devices refreshed: cloud=%d, cache=%d\n", len(cloudDevices), len(c.deviceListCache))
 	return nil
 }
 
@@ -317,7 +319,7 @@ func (c *MIoTClient) deviceHomeID(did string) string {
 //  5. homeScope 非空时只处理该家庭下的设备。
 func (c *MIoTClient) pruneRemovedDevicesLocked(cloudDevices map[string]map[string]interface{}, homeScope map[string]struct{}) []string {
 	if len(cloudDevices) == 0 {
-		c.lgr.Warnf("[MIoTClient] empty cloud device list, skip removal detection\n")
+		logrus.Warnf("[MIoTClient] empty cloud device list, skip removal detection\n")
 		return nil
 	}
 
@@ -386,7 +388,7 @@ func (c *MIoTClient) aggregateDeviceState(did string) {
 				explicitFalse = true
 			}
 		} else if _, exists := info["online"]; exists {
-			c.lgr.Debugf("[MIoTClient] %s online type mismatch: %v (%T)\n", did, info["online"], info["online"])
+			logrus.Debugf("[MIoTClient] %s online type mismatch: %v (%T)\n", did, info["online"], info["online"])
 		}
 	}
 
@@ -401,7 +403,7 @@ func (c *MIoTClient) aggregateDeviceState(did string) {
 		} else {
 			online = true // 云列表里有但没 online 字段，假设在线
 		}
-		c.lgr.Debugf("[MIoTClient] %s no online field from cloud/gw/lan, fallback online=%v (cache=%v)\n",
+		logrus.Debugf("[MIoTClient] %s no online field from cloud/gw/lan, fallback online=%v (cache=%v)\n",
 			did, online, cacheInfo["online"])
 	}
 
@@ -413,7 +415,7 @@ func (c *MIoTClient) aggregateDeviceState(did string) {
 func (c *MIoTClient) LoadDevices() error {
 	// Try to load from cache first
 	if err := c.loadCacheDevice(); err != nil {
-		c.lgr.Errorf("[MIoTClient] Failed to load from cache: %v\n", err)
+		logrus.Errorf("[MIoTClient] Failed to load from cache: %v\n", err)
 	}
 
 	// Then refresh from cloud
@@ -461,15 +463,15 @@ func (c *MIoTClient) ScheduleRefreshDevices(delay time.Duration) {
 	}
 
 	c.refreshCloudDevicesTimer = time.AfterFunc(delay, func() {
-		c.lgr.Infof("[MIoTClient] Refreshing devices...\n")
+		logrus.Infof("[MIoTClient] Refreshing devices...\n")
 		if err := c.RefreshDevices(c.homeIDs); err != nil {
-			c.lgr.Errorf("[MIoTClient] Refresh failed, will retry: %v\n", err)
+			logrus.Errorf("[MIoTClient] Refresh failed, will retry: %v\n", err)
 			// Retry after 60s
 			c.ScheduleRefreshDevices(RefreshCloudDevicesRetryDelay * time.Millisecond)
 		}
 	})
 
-	c.lgr.Infof("[MIoTClient] Device refresh scheduled in %v\n", delay)
+	logrus.Infof("[MIoTClient] Device refresh scheduled in %v\n", delay)
 }
 
 // Start starts the MIoTClient and schedules initial device load.
@@ -483,7 +485,7 @@ func (c *MIoTClient) Start() error {
 	// Schedule initial device load (delayed, aligns with REFRESH_CLOUD_DEVICES_DELAY=6 in Python)
 	c.ScheduleRefreshDevices(RefreshCloudDevicesDelay * time.Millisecond)
 
-	c.lgr.Infof("[MIoTClient] Started\n")
+	logrus.Infof("[MIoTClient] Started\n")
 	return nil
 }