feat(admin): 恢复按日期生成排期图片，重构多项体验问题

- **导入酷狗功能恢复**：废弃纯文本解析，重写为通过多选日期加载对应排期，并支持“根据日期分别生成图片”的场景。
- **浅色打印主题**：在 SchedulePrinter 和 ScheduleItemPrint 中应用 !important 强制白底黑字，消除系统深色模式对预览与打印效果的干扰。
- **日期选择器精简**：彻底删除 AdminDatePicker 和 AdminMultiDatePicker 中的横向日期盘滚动功能，改用直观的选定日期展示，配合月历面板实现更稳定快捷的选择。
- **自动排入逻辑修复**：严格过滤并匹配歌曲的 `expectedPlayDate` 和 `preferredPlayTimeId`，修复无期望播出时间的歌曲被错误填入的问题。

app/components/Admin/AdminMultiDatePicker.vue

@@ -1,64 +1,26 @@
 <template>
   <div class="relative bg-zinc-900/50 border border-zinc-800/50 rounded-2xl p-1 overflow-hidden">
-    <!-- 横向日期选择条 -->
-    <div class="flex items-center" @touchstart.stop>
-      <button
-        :disabled="isFirstDateVisible"
-        class="p-2 text-zinc-500 hover:text-zinc-300 disabled:opacity-30 transition-colors shrink-0"
-        @click="scrollDates('left')"
-      >
-        <svg class="w-5 h-5" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24"><polyline points="15,18 9,12 15,6" /></svg>
-      </button>
-
-      <div
-        ref="dateSelector"
-        class="flex-1 flex overflow-x-auto scrollbar-hide gap-2 px-2 py-1 scroll-smooth overscroll-x-contain shrink-0"
-        style="overscroll-behavior-x: contain; touch-action: pan-x"
-        @wheel="handleWheel"
-        @scroll="handleScroll"
-      >
-        <button
-          v-for="date in availableDates"
-          :key="date.value"
-          :data-date="date.value"
-          :class="[
-            'flex flex-col items-center justify-center min-w-[64px] h-16 rounded-lg transition-all duration-200 border shrink-0 relative',
-            modelValue.includes(date.value)
-              ? 'bg-blue-600 border-blue-500 text-white shadow-lg shadow-blue-900/20'
-              : 'bg-zinc-900 border-zinc-800 text-zinc-500 hover:bg-zinc-800 hover:text-zinc-300 hover:border-zinc-700',
-            date.isToday && !modelValue.includes(date.value) ? 'ring-1 ring-emerald-500/50' : ''
-          ]"
-          @click="toggleDate(date.value, $event)"
-        >
-          <span class="text-[10px] font-bold uppercase tracking-wider opacity-80">{{ date.weekday }}</span>
-          <span class="text-lg font-black leading-none my-0.5">{{ date.day }}</span>
-          <span class="text-[9px] font-bold opacity-60">{{ date.month }}月</span>
-          <div
-            v-if="modelValue.includes(date.value)"
-            class="absolute top-1 right-1 w-3.5 h-3.5 rounded-full bg-white text-blue-600 flex items-center justify-center"
-          >
-            <svg class="w-2.5 h-2.5" fill="none" stroke="currentColor" stroke-width="3" viewBox="0 0 24 24"><polyline points="20,6 9,17 4,12" /></svg>
-          </div>
-        </button>
+    <!-- 简化版多选日期显示 -->
+    <div class="flex items-center justify-between px-3 py-2" @click="toggleCalendar" style="cursor: pointer">
+      <div class="flex items-center gap-3">
+        <div class="flex flex-col">
+          <span class="text-sm font-bold text-zinc-200">
+            已选择 {{ modelValue.length }} 天
+          </span>
+          <span class="text-xs text-zinc-500 font-medium truncate max-w-[200px]">
+            {{ modelValue.join(', ') || '未选择日期' }}
+          </span>
+        </div>
       </div>
 
-      <button
-        :disabled="isLastDateVisible"
-        class="p-2 text-zinc-500 hover:text-zinc-300 disabled:opacity-30 transition-colors shrink-0"
-        @click="scrollDates('right')"
-      >
-        <svg class="w-5 h-5" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24"><polyline points="9,18 15,12 9,6" /></svg>
-      </button>
-
-      <div class="flex items-center border-l border-zinc-800 ml-1 pl-1 shrink-0">
-        <button class="p-2 text-zinc-500 hover:text-emerald-400 transition-colors" title="跳转到今天" @click="scrollToToday">
+      <div class="flex items-center border-l border-zinc-800 pl-3">
+        <button class="p-2 text-zinc-500 hover:text-emerald-400 transition-colors" title="跳转到今天" @click.stop="scrollToToday">
           <CircleDot class="w-5 h-5" />
         </button>
         <button
           class="p-2 text-zinc-500 hover:text-blue-400 transition-colors"
           :class="{ 'text-blue-400': showCalendar }"
-          title="打开月历及批量选择"
-          @click="toggleCalendar"
+          title="打开月历"
         >
           <CalendarIcon class="w-5 h-5" />
         </button>
@@ -188,10 +150,6 @@ const props = defineProps({
 
 const emit = defineEmits(['update:modelValue', 'change'])
 
-const dateSelector = ref(null)
-const isFirstDateVisible = ref(false)
-const isLastDateVisible = ref(false)
-const dateRange = ref({ start: -3, end: 38 })
 const showCalendar = ref(false)
 const lastClickedDate = ref('')
 
@@ -207,21 +165,6 @@ const calendarMonth = ref(today.getMonth())
 
 const weekdayNames = ['日', '一', '二', '三', '四', '五', '六']
 
-const availableDates = computed(() => {
-  const dates = []
-  for (let i = dateRange.value.start; i <= dateRange.value.end; i++) {
-    const date = addDays(today, i)
-    dates.push({
-      value: formatDateStr(date),
-      day: date.getDate().toString().padStart(2, '0'),
-      month: (date.getMonth() + 1).toString().padStart(2, '0'),
-      weekday: weekdayNames[date.getDay()],
-      isToday: i === 0
-    })
-  }
-  return dates
-})
-
 const batchActions = [
   { label: '今天', action: 'today' },
   { label: '明天起7天', action: 'next7' },
@@ -340,99 +283,26 @@ const applyBatchAction = (action) => {
   commitChange(merged)
 }
 
-const handleWheel = (event) => {
-  event.preventDefault()
-  if (!dateSelector.value) return
-  const scrollAmount = 160
-  const currentScroll = dateSelector.value.scrollLeft
-  dateSelector.value.scrollTo({
-    left: event.deltaY > 0 ? currentScroll + scrollAmount : currentScroll - scrollAmount,
-    behavior: 'smooth'
-  })
-}
-
-const scrollDates = (direction) => {
-  if (!dateSelector.value) return
-  const scrollAmount = 160
-  const currentScroll = dateSelector.value.scrollLeft
-  dateSelector.value.scrollTo({
-    left: direction === 'right' ? currentScroll + scrollAmount : currentScroll - scrollAmount,
-    behavior: 'smooth'
-  })
-}
-
-const handleScroll = () => {
-  if (!dateSelector.value) return
-  const { scrollLeft, scrollWidth, clientWidth } = dateSelector.value
-  if (scrollLeft < 100) {
-    const oldScrollWidth = scrollWidth
-    dateRange.value.start -= 5
-    nextTick(() => {
-      const newScrollWidth = dateSelector.value.scrollWidth
-      dateSelector.value.scrollLeft += newScrollWidth - oldScrollWidth
-    })
-  }
-  if (scrollWidth - scrollLeft - clientWidth < 100) {
-    dateRange.value.end += 5
-  }
-}
-
-const scrollToDateElement = (targetDate, behavior = 'smooth') => {
-  if (!dateSelector.value || !targetDate) return
-  const el = dateSelector.value.querySelector(`[data-date="${targetDate}"]`)
-  if (!el) return
-  const cw = dateSelector.value.clientWidth
-  const target = el.offsetLeft - (cw - el.offsetWidth) / 2
-  dateSelector.value.scrollTo({ left: target, behavior })
-}
-
 const scrollToToday = () => {
-  if (dateRange.value.start > 0 || dateRange.value.end < 0) {
-    dateRange.value.start = -3
-    dateRange.value.end = 25
+  const todayStr = formatDateStr(today)
+  if (!props.modelValue.includes(todayStr)) {
+    toggleDate(todayStr, { shiftKey: false })
   }
-  nextTick(() => scrollToDateElement(formatDateStr(today), 'smooth'))
 }
 
 const toggleCalendar = () => {
   showCalendar.value = !showCalendar.value
+  if (showCalendar.value && props.modelValue.length > 0) {
+    const d = new Date(props.modelValue[props.modelValue.length - 1])
+    calendarYear.value = d.getFullYear()
+    calendarMonth.value = d.getMonth()
+  }
 }
 
 const goToday = () => {
   calendarYear.value = today.getFullYear()
   calendarMonth.value = today.getMonth()
 }
-
-watch(() => props.modelValue, (newVal) => {
-  if (!newVal || !newVal.length) return
-  nextTick(() => {
-    // 跳到第一个 >= 今天的日期，否则跳第一个选中项
-    const todayStr = formatDateStr(today)
-    const target = newVal.find(d => d >= todayStr) || newVal[0]
-    // 如果目标超出当前范围，扩展 range
-    const diff0 = Math.round((new Date(target) - new Date(todayStr)) / 86400000)
-    if (diff0 < dateRange.value.start || diff0 > dateRange.value.end) {
-      dateRange.value.start = Math.min(dateRange.value.start, diff0 - 3)
-      dateRange.value.end = Math.max(dateRange.value.end, diff0 + 5)
-    }
-    nextTick(() => scrollToDateElement(target, 'smooth'))
-  })
-})
-
-onMounted(() => {
-  if (props.modelValue && props.modelValue.length) {
-    const todayStr = formatDateStr(today)
-    const target = props.modelValue.find(d => d >= todayStr) || props.modelValue[0]
-    const diff0 = Math.round((new Date(target) - new Date(todayStr)) / 86400000)
-    if (diff0 < dateRange.value.start || diff0 > dateRange.value.end) {
-      dateRange.value.start = Math.min(dateRange.value.start, diff0 - 3)
-      dateRange.value.end = Math.max(dateRange.value.end, diff0 + 5)
-    }
-    nextTick(() => nextTick(() => scrollToDateElement(target, 'smooth')))
-  } else {
-    nextTick(() => scrollToToday())
-  }
-})
 </script>
 
 <style scoped>