feat(admin): 图片歌单改导入酷狗+自动排入按期望时段+日期滚动修复

1. 菜单重命名: 图片歌单 -> 导入酷狗 (Sidebar/Dashboard/教程 + 页面标题)
2. PlaylistCardPage(导入酷狗) 新增:
   - 粘贴酷狗歌单文本解析(支持序号/横杠/括号格式)
   - 预览区歌名与歌手名完整显示(去除truncate, 支持换行展示)
   - 选日期+选播出时段, 一键将解析后的歌曲(没找到则自动创建)生成为该日期的排期
   - 批量保存后展示状态徽章(匹配/创建/失败)
3. PlaylistCardGenerator 画布:
   - 去除 substring(0,12)/substring(0,10) 截断, 改用 fitText 按 canvas 宽度逐字符换行切分
   - canvas 高度根据实际行数动态计算, 最多支持 200 首
   - 中文字体堆栈加入 PingFang SC/Microsoft YaHei
4. ScheduleManager.autoScheduleExpected:
   - 优先按歌曲自己的 preferredPlayTimeId(期望播出时段) 分组排入
   - 未指定才 fallback 到顶部当前选中时段
   - 分时段各自维护 sequence, 最后按时段 startTime 升序+分序 合并重排
   - 顶部过滤了单时段时, 只排入匹配该时段的歌曲(含未指定fallback)
5. 日期滚动修复:
   - AdminDatePicker / AdminMultiDatePicker scrollToDateElement 弃用 scrollIntoView
   - 改用精确的 offsetLeft - (clientWidth-offsetWidth)/2 计算 scrollTo left 值, 避免受父级滚动容器/左箭头影响

app/components/Admin/ScheduleManager.vue

@@ -2075,17 +2075,36 @@ const autoScheduleExpected = () => {
   }
 
   const baseId = Date.now()
+  const filteredPtId = selectedPlayTime.value ? parseInt(selectedPlayTime.value) : null
+
+  const playTimeSeqCounters = new Map()
+  for (const s of localScheduledSongs.value) {
+    const key = String(s.playTimeId || '')
+    playTimeSeqCounters.set(key, (playTimeSeqCounters.get(key) || 0) + 1)
+  }
+
   expectedSongs.forEach((song, idx) => {
     const existingIndex = localScheduledSongs.value.findIndex((s) => s.song?.id === song.id)
     if (existingIndex !== -1) return
 
-    const playTimeId = selectedPlayTime.value ? parseInt(selectedPlayTime.value) : null
+    let targetPlayTimeId = null
+    if (song.preferredPlayTimeId) {
+      const matched = (playTimes.value || []).find(pt => pt.id === song.preferredPlayTimeId)
+      if (matched) targetPlayTimeId = song.preferredPlayTimeId
+    }
+    if (!targetPlayTimeId && filteredPtId != null) targetPlayTimeId = filteredPtId
+
+    if (filteredPtId != null && targetPlayTimeId !== filteredPtId) return
+    const ptKey = String(targetPlayTimeId || '')
+    const nextSeq = (playTimeSeqCounters.get(ptKey) || 0) + 1
+    playTimeSeqCounters.set(ptKey, nextSeq)
+
     const newSchedule = {
       id: baseId + idx,
       song: song,
       playDate: selectedDate.value,
-      sequence: localScheduledSongs.value.length + 1,
-      playTimeId,
+      sequence: nextSeq,
+      playTimeId: targetPlayTimeId,
       isNew: true,
       isLocalOnly: true
     }
@@ -2094,6 +2113,18 @@ const autoScheduleExpected = () => {
     count++
   })
 
+  const ptOrder = (id) => {
+    if (id == null || id === '') return 1e9
+    const pt = (playTimes.value || []).find(p => p.id === id)
+    if (!pt || !pt.startTime) return 1e8
+    const [h, m] = pt.startTime.split(':').map(Number)
+    return h * 60 + (m || 0)
+  }
+  localScheduledSongs.value.sort((a, b) => {
+    const po = ptOrder(a.playTimeId) - ptOrder(b.playTimeId)
+    if (po !== 0) return po
+    return (a.sequence || 0) - (b.sequence || 0)
+  })
   localScheduledSongs.value.forEach((item, idx) => {
     item.sequence = idx + 1
   })
@@ -2101,7 +2132,9 @@ const autoScheduleExpected = () => {
   hasChanges.value = true
   const strategyLabel =
     autoScheduleStrategy.value === 'contributor-count' ? '（按投稿人数优先）' : ''
-  showToast(`已自动排入 ${count} 首待排歌曲${strategyLabel}，请注意调整顺序后保存`, 'success')
+  const byPref = expectedSongs.filter(s => s.preferredPlayTimeId).length
+  const prefInfo = byPref ? `，其中 ${byPref} 首按期望播出时段排入` : ''
+  showToast(`已自动排入 ${count} 首待排歌曲${strategyLabel}${prefInfo}，请注意调整顺序后保存`, 'success')
 }
 
 // 构建播放队列