feat(songs): 歌曲管理支持批量驳回、投稿留言自动审查与排期范围可见性过滤

- 新增 /api/admin/songs/batch-reject.post 批量驳回接口（事务清排期/投票/扣接纳数/黑名单去重/异步通知）
- requireSongAdmin 三角色校验 + createApiError 统一错误包装
- scheduleDaysBefore/After 四字段排期可见范围限制（开放 API 与公开排期接口三处缓存路径 + DB 条件过滤）
- submissionNoteAutoModeration 基于黑名单 KEYWORD/LANGUAGE/GENRE 自动判定留言 publicStatus，命中自动关闭 submissionNotePublic
- 更新 songs/request.post 与 songs/[id]/update.put 接入自动审查逻辑

app/components/Admin/SongManagement.vue

@@ -61,6 +61,12 @@
               >
                 <RotateCcw :size="14" class="text-blue-500/70" /> 未播放 ({{ selectedSongs.length }})
               </button>
+              <button
+                class="flex items-center gap-2 px-4 py-2 bg-zinc-800 hover:bg-zinc-700 text-amber-400 text-[11px] font-black rounded-lg border border-zinc-700/50 transition-all active:scale-95 uppercase tracking-widest"
+                @click="batchReject"
+              >
+                <X :size="14" class="text-amber-500/70" /> 驳回 ({{ selectedSongs.length }})
+              </button>
               <button
                 class="flex items-center gap-2 px-4 py-2 bg-zinc-800 hover:bg-zinc-700 text-red-400 text-[11px] font-black rounded-lg border border-zinc-700/50 transition-all active:scale-95 uppercase tracking-widest"
                 @click="batchDelete"
@@ -408,7 +414,7 @@
           @click.stop
         >
           <div class="px-8 py-6 border-b border-zinc-800/50 flex items-center justify-between">
-            <h3 class="text-xl font-black text-zinc-100">驳回歌曲</h3>
+            <h3 class="text-xl font-black text-zinc-100">{{ isBatchReject ? `批量驳回歌曲 (${selectedSongs.length} 首)` : '驳回歌曲' }}</h3>
             <button
               class="text-zinc-500 hover:text-zinc-300 transition-colors"
               @click="cancelReject"
@@ -418,7 +424,7 @@
           </div>
 
           <div class="p-8 space-y-6">
-            <div class="p-5 bg-zinc-950 border border-zinc-800 rounded-lg flex items-center gap-4">
+            <div v-if="!isBatchReject" class="p-5 bg-zinc-950 border border-zinc-800 rounded-lg flex items-center gap-4">
               <div
                 class="w-10 h-10 rounded-lg bg-red-500/10 text-red-500 flex items-center justify-center border border-red-500/10"
               >
@@ -429,6 +435,17 @@
                 <p class="text-xs text-zinc-500">投稿人: {{ rejectSongInfo.requester }}</p>
               </div>
             </div>
+            <div v-else class="p-5 bg-zinc-950 border border-zinc-800 rounded-lg flex items-center gap-4">
+              <div
+                class="w-10 h-10 rounded-lg bg-amber-500/10 text-amber-500 flex items-center justify-center border border-amber-500/10"
+              >
+                <ListMusic :size="18" />
+              </div>
+              <div>
+                <h4 class="font-bold text-zinc-100 text-sm">即将批量驳回 {{ selectedSongs.length }} 首歌曲</h4>
+                <p class="text-xs text-zinc-500">驳回后将一并清理投票、排期记录并发送通知给对应投稿人</p>
+              </div>
+            </div>
 
             <div class="space-y-2">
               <label class="text-[10px] font-black text-zinc-600 uppercase tracking-widest px-1"
@@ -961,6 +978,7 @@ import {
   X,
   Trash2,
   Music,
+  ListMusic,
   Heart,
   Download,
   ChevronDown,
@@ -1040,6 +1058,7 @@ const showRejectDialog = ref(false)
 const rejectLoading = ref(false)
 const rejectReason = ref('')
 const addToBlacklist = ref(false)
+const isBatchReject = ref(false)
 const rejectSongInfo = ref({
   id: null,
   title: '',
@@ -1475,6 +1494,7 @@ const rejectSong = (songId) => {
   const song = songs.value.find((s) => s.id === songId)
   if (!song) return
 
+  isBatchReject.value = false
   rejectSongInfo.value = {
     id: song.id,
     title: song.title || '',
@@ -1487,6 +1507,22 @@ const rejectSong = (songId) => {
   showRejectDialog.value = true
 }
 
+// 批量驳回歌曲
+const batchReject = () => {
+  if (selectedSongs.value.length === 0) return
+
+  isBatchReject.value = true
+  rejectSongInfo.value = {
+    id: null,
+    title: '',
+    artist: '',
+    requester: ''
+  }
+  rejectReason.value = ''
+  addToBlacklist.value = false
+  showRejectDialog.value = true
+}
+
 // 确认驳回
 const confirmReject = async () => {
   if (!rejectReason.value.trim()) {
@@ -1496,26 +1532,40 @@ const confirmReject = async () => {
 
   rejectLoading.value = true
   try {
-    await $fetch('/api/admin/songs/reject', {
-      method: 'POST',
-      body: {
-        songId: rejectSongInfo.value.id,
-        reason: rejectReason.value.trim(),
-        addToBlacklist: addToBlacklist.value
+    if (isBatchReject.value) {
+      await $fetch('/api/admin/songs/batch-reject', {
+        method: 'POST',
+        body: {
+          songIds: selectedSongs.value,
+          reason: rejectReason.value.trim(),
+          addToBlacklist: addToBlacklist.value
+        }
+      })
+      await refreshSongs(true)
+      selectedSongs.value = []
+      showNotification(`批量驳回成功，共处理 ${selectedSongs.value.length} 首歌曲`, 'success')
+    } else {
+      await $fetch('/api/admin/songs/reject', {
+        method: 'POST',
+        body: {
+          songId: rejectSongInfo.value.id,
+          reason: rejectReason.value.trim(),
+          addToBlacklist: addToBlacklist.value
+        }
+      })
+
+      await refreshSongs(true)
+
+      const index = selectedSongs.value.indexOf(rejectSongInfo.value.id)
+      if (index > -1) {
+        selectedSongs.value.splice(index, 1)
       }
-    })
 
-    await refreshSongs(true)
-
-    const index = selectedSongs.value.indexOf(rejectSongInfo.value.id)
-    if (index > -1) {
-      selectedSongs.value.splice(index, 1)
+      showNotification('歌曲驳回成功，已通知投稿人', 'success')
     }
 
     showRejectDialog.value = false
-
-    showNotification('歌曲驳回成功，已通知投稿人', 'success')
-  } catch (error) {
+  } catch (error: any) {
     console.error('驳回歌曲失败:', error)
     showNotification('驳回失败: ' + (error.data?.message || error.message), 'error')
   } finally {
@@ -1528,6 +1578,7 @@ const cancelReject = () => {
   showRejectDialog.value = false
   rejectReason.value = ''
   addToBlacklist.value = false
+  isBatchReject.value = false
   rejectSongInfo.value = {
     id: null,
     title: '',