fix: 修复抽烟记录第一条不显示距离上次时间的问题

- 第一条记录现在显示距离当前时间的间隔
- 后续记录显示距离上一条记录的间隔

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

stores/logs.js

@@ -66,18 +66,37 @@ export const useLogsStore = defineStore('logs', {
 
 			return sortedLogs.map((log, index) => {
 				const type = normalizeLogType(log)
-				
-				// 计算间隔时间：当前记录与上一条记录的间隔（上一条是 index-1，因为已倒序）
+
+				// 计算间隔时间
 				let interval = ''
-				if (index > 0) {
-					const currentTime = getTime(log)
-					const prevTime = getTime(sortedLogs[index - 1])
-					const diff = prevTime - currentTime // 上一条时间 - 当前时间（因为已倒序）
-					
+				const currentTime = getTime(log)
+
+				if (index === 0) {
+					// 第一条记录：显示距离当前时间的间隔
+					const now = Date.now()
+					const diff = now - currentTime
+
 					if (diff > 0) {
 						const hours = Math.floor(diff / (1000 * 60 * 60))
 						const minutes = Math.floor((diff % (1000 * 60 * 60)) / (1000 * 60))
-						
+
+						if (hours > 0) {
+							interval = `${hours}小时${minutes}分`
+						} else if (minutes > 0) {
+							interval = `${minutes}分钟`
+						} else {
+							interval = '刚刚'
+						}
+					}
+				} else {
+					// 后续记录：显示距离上一条记录的间隔
+					const prevTime = getTime(sortedLogs[index - 1])
+					const diff = prevTime - currentTime
+
+					if (diff > 0) {
+						const hours = Math.floor(diff / (1000 * 60 * 60))
+						const minutes = Math.floor((diff % (1000 * 60 * 60)) / (1000 * 60))
+
 						if (hours > 0) {
 							interval = `${hours}小时${minutes}分`
 						} else if (minutes > 0) {