[AI Generated]: refactor(*): 重构蓝牙生命周期管理，修复最小化后重连与进度跳步问题

- app.js: 提取 registerBusListeners 方法，新增自动重连机制（3次上限）
- configureDevice: bus 订阅迁移至 onShow，deviceConnect 按步骤区分处理逻辑
- configureDevice_2: setUserInfo 兼容 WIFISUCCESS 状态，WXML 覆盖六态
- configureDevice_3: 新增 reInitWifi 方法，最小化后重置 WiFi 列表
- replaceNetwork: 订阅迁移至 onShow，修复 selectComponent 空指针
- replaceNetwork_3: 修复 domain1 配网参数引用错误
- userInfo: 订阅迁移至 onShow，setUserInfo 兼容 WIFISUCCESS
- searchDevice: 移除 onLoad 重复初始化，统一由 onShow 处理
- 所有 BLE 页面统一 onHide/onUnload 清理：resetReconnectCount + setGlobalData(null) + stop()

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app.js

@@ -141,44 +141,91 @@ App({
 
         _callbacks: {} // 用于存储所有 globalData 属性的监听回调
 	},
-	
+
+	_reconnectCount: 0, // 自动重连已尝试次数
+	_reconnectMax: 3, // 最大自动重连次数
+	_reconnectTimer: null, // 重连定时器
+
 	initPpScale() {
 		this.globalData.ppScale.plugin = requirePlugin('ppScale-plugin');
-		
-        // 蓝牙连接状态监听
-		this.globalData.ppScale.plugin.bus.subscribe("connectState", (res) => {
-            console.log("app.js ===> connectState", res);
-            this.setGlobalData('ppScale.device.connectState', res);
-
-			// 连接失败则重新连接
-			if (res == this.globalData.ppScale.plugin.BLUE_STATE.CONNECTFAILED) {
-				this.reconnectDevice()
-			}
-			wx.hideLoading();
-        });
-        
-        // 同步时间
-        this.globalData.ppScale.plugin.bus.subscribe("syncDeviceTimeSuccess", (res) => {
-            console.log("app.js ===> syncDeviceTimeSuccess", res);
-        })
-
-        // 设备自动断开监听
-		this.globalData.ppScale.plugin.bus.subscribe("deviceWillDisconnect", (res) => {
-			console.log("app.js ===> deviceWillDisconnect", res);
-            
-            this.reconnectDevice();
-		})
 	},
 
-	reconnectDevice() {
-		this.globalData.ppScale.plugin.Blue.disconnect((disres) => {
-			if (disres.errCode == 0) {
-				this.globalData.ppScale.plugin.Blue.startBluetoothDevicesDiscovery();
-			} else {
+	/**
+	 * 注册全局 bus 事件监听（connectState / syncDeviceTimeSuccess / deviceWillDisconnect）
+	 * stop() 会销毁所有订阅，页面在 onShow 中需重新调用此方法
+	 */
+	registerBusListeners() {
+		const plugin = this.globalData.ppScale.plugin;
+
+		// 蓝牙连接状态监听
+		plugin.bus.subscribe("connectState", (res) => {
+			console.log("app.js ===> connectState", res);
+			this.setGlobalData('ppScale.device.connectState', res);
+
+			// 连接成功，重置重连计数
+			if (res == plugin.BLUE_STATE.CONNECTSUCCESS) {
+				this._reconnectCount = 0;
+			}
+
+			// 连接失败，自动重连（最多重试3次）
+			if (res == plugin.BLUE_STATE.CONNECTFAILED) {
 				this.reconnectDevice();
 			}
-		})
-    },
+
+			wx.hideLoading();
+		});
+
+		// 同步时间
+		plugin.bus.subscribe("syncDeviceTimeSuccess", (res) => {
+			console.log("app.js ===> syncDeviceTimeSuccess", res);
+		});
+
+		// 设备自动断开监听
+		plugin.bus.subscribe("deviceWillDisconnect", (res) => {
+			console.log("app.js ===> deviceWillDisconnect", res);
+			this.setGlobalData('ppScale.device.connectState', plugin.BLUE_STATE.CONNECTFAILED);
+		});
+	},
+
+	/**
+	 * 自动重连设备，最多重试 _reconnectMax 次，超过后停止，由用户手动重连
+	 * 流程：先断开旧连接，再重新扫描设备，由页面级 devicesList 订阅自动接管连接
+	 */
+	reconnectDevice() {
+		if (this._reconnectCount >= this._reconnectMax) {
+			console.log("app.js ===> 自动重连已达上限，等待用户手动重试");
+			return;
+		}
+
+		this._reconnectCount++;
+		console.log(`app.js ===> 自动重连第 ${this._reconnectCount}/${this._reconnectMax} 次`);
+
+		// 延迟 2 秒后重连，避免连续冲突
+		if (this._reconnectTimer) {
+			clearTimeout(this._reconnectTimer);
+		}
+		this._reconnectTimer = setTimeout(() => {
+			this.globalData.ppScale.plugin.Blue.disconnect((disres) => {
+				if (disres.errCode == 0) {
+					console.log("app.js ===> 断开成功，开始重新扫描设备");
+					this.globalData.ppScale.plugin.Blue.startBluetoothDevicesDiscovery();
+				} else {
+					console.log("app.js ===> 断开失败，errCode:", disres.errCode);
+				}
+			});
+		}, 2000);
+	},
+
+	/**
+	 * 重置重连计数，用于用户手动点击重试时调用
+	 */
+	resetReconnectCount() {
+		this._reconnectCount = 0;
+		if (this._reconnectTimer) {
+			clearTimeout(this._reconnectTimer);
+			this._reconnectTimer = null;
+		}
+	},
     
     /**
      * 注册 globalData 某个属性的监听