fix(dashboard): 使用稳定设备标识

src/domain/battery.ts

@@ -54,6 +54,7 @@ export type BatteryInfo = z.infer<typeof batteryInfoSchema>
 
 export const fleetUnitSchema = z.object({
   id: z.string(),
+  displayName: z.string(),
   batch: z.string(),
   firmware: z.string(),
   cycles: z.number().int(),
@@ -267,7 +268,8 @@ function toFleetUnit(item: BatteryInfo, prediction?: BatteryPrediction): FleetUn
   const riskScore = Math.round(clamp(prediction?.riskScore ?? fallbackRiskScore, 0, 100))
 
   return {
-    id: item.devName || item.mac,
+    id: item.mac,
+    displayName: item.devName || item.mac,
     batch: item.devModel,
     firmware: item.remark ?? '未提供',
     cycles: prediction?.cyclesUsed ?? 0,