fix: 订阅恢复补缺集/单媒体手动整理入口/媒体库排序/网盘媒体分类迁移

- 订阅(问题1): selectPreparedSubscriptionCandidates 在本地已有部分集时不再
  无条件丢弃整季/全集包,单集候选不足时用全集包兜底;Restore 重置 total_episodes
  让下次 run 从权威元数据重算,避免被 feed 低估值锁死误判'无缺集'
- 单媒体整理(问题2): 后端已具备,新增 OrganizeMediaDialog 组件并在媒体详情页
  接入'整理入库'按钮(可选类型/二级分类/目标路径/转移方式/预览)
- 媒体库排序(问题3): ListByLibrariesFiltered 改多级排序 year/updated_at/
  created_at/id,id 作稳定 tie-breaker 消除云盘批量扫描同批时间戳的随机观感
- 网盘媒体消失(问题4): 云盘媒体 upsert 时允许 library_id 迁移到重新挂载的
  更精确分类库(本地媒体物理位置固定不迁移),修复一键挂载子目录后媒体消失

web/src/pages/MediaDetailPage.tsx

@@ -1,7 +1,7 @@
 import { motion } from 'framer-motion'
 import { useEffect, useState } from 'react'
 import { Link, useNavigate, useParams } from 'react-router-dom'
-import { FileText, Heart, Play, RefreshCw, Sparkles, Trash2, Calendar, Database, Search, Pencil } from 'lucide-react'
+import { FileText, Heart, Play, RefreshCw, Sparkles, Trash2, Calendar, Database, Search, Pencil, FolderInput } from 'lucide-react'
 import toast from 'react-hot-toast'
 
 import { mediaAPI } from '../api/library'
@@ -15,6 +15,7 @@ import { confirmAction } from '../components/ConfirmDialog'
 import { ExternalPlayerButton } from '../components/ExternalPlayerButton'
 import { ManualScrapeDialog } from '../components/ManualScrapeDialog'
 import { MetadataEditDialog } from '../components/MetadataEditDialog'
+import { OrganizeMediaDialog } from '../components/OrganizeMediaDialog'
 
 function fmtDuration(sec: number): string {
   if (!sec || sec <= 0) return '—'
@@ -49,6 +50,7 @@ export function MediaDetailPage() {
   const [loading, setLoading] = useState(true)
   const [manualScrapeOpen, setManualScrapeOpen] = useState(false)
   const [metadataEditOpen, setMetadataEditOpen] = useState(false)
+  const [organizeOpen, setOrganizeOpen] = useState(false)
 
   const refresh = async () => {
     if (!id) return
@@ -327,6 +329,10 @@ export function MediaDetailPage() {
                     <Pencil size={13} className="text-gray-600" />
                     <span>编辑元数据</span>
                   </button>
+                  <button onClick={() => setOrganizeOpen(true)} className="btn-outline py-2 px-3.5 text-xs gap-1.5 border-gray-200 hover:border-brand-500/50 hover:bg-brand-50">
+                    <FolderInput size={13} className="text-[#c9954a]" />
+                    <span>整理入库</span>
+                  </button>
                   <button onClick={reprobe} className="btn-outline py-2 px-3.5 text-xs gap-1.5 border-gray-200 hover:border-brand-500/50 hover:bg-brand-50">
                     <Database size={13} className="text-gray-600" />
                     <span>探测媒体轨 (ffprobe)</span>
@@ -366,6 +372,12 @@ export function MediaDetailPage() {
           await refresh()
         }}
       />
+      <OrganizeMediaDialog
+        open={organizeOpen}
+        media={media}
+        onClose={() => setOrganizeOpen(false)}
+        onOrganized={refresh}
+      />
     </div>
   )
 }