feat(listings): 订单和账号详情展示可租时长与每日消耗

租客在订单列表和详情标题能看到每个号的租期、消耗。账号详情把这两项拆成独立格子。

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/features/orders/composables/useOrderSnapshot.ts

@@ -218,6 +218,34 @@ export function getSnapshotHafCoinM(order: Order | null) {
   return roundQuantity(readNumber(snapshot?.haf_coin_amount) / 1000000)
 }
 
+export function formatDailyLossText(dailyLossM: number) {
+  const rounded = Math.round(Number(dailyLossM || 0) * 10) / 10
+  if (rounded <= 0) return ''
+  const text = Number.isInteger(rounded) ? `${rounded}` : rounded.toFixed(1)
+  return `${text}M/天`
+}
+
+export function orderRentalTerms(order: Order | null) {
+  const dailyLossM = readNumber(readAssetSummary(order)?.daily_loss_m)
+  const coinM = getSnapshotHafCoinM(order)
+  if (dailyLossM <= 0 || coinM <= 0) return { rentalDays: 0, dailyLossText: '' }
+  return {
+    rentalDays: Math.max(1, Math.ceil(coinM / dailyLossM)),
+    dailyLossText: formatDailyLossText(dailyLossM),
+  }
+}
+
+export function orderListRentalTerms(
+  item?: { rental_days?: number; daily_loss_m?: number } | null
+) {
+  const rentalDays = Math.ceil(readNumber(item?.rental_days))
+  const dailyLossText = formatDailyLossText(readNumber(item?.daily_loss_m))
+  return {
+    rentalDays: rentalDays > 0 ? rentalDays : 0,
+    dailyLossText,
+  }
+}
+
 export function orderEstimatedEndAt(order: Order | null) {
   if (order?.estimated_end_at) return order.estimated_end_at
   const rentedAt = order?.rented_at