feat(server): scrapeMedia 刮削任务,入库后自动刮削(SCR-1)

- 文件道任务 scrapeMedia:NFO 原子写入、图片经图片缓存下载(并发 4,失败不阻塞 NFO)、只补缺失 / 全部覆盖
- 设置 organize.scrapeAfterImport / scrapeMode / scrapeImages / scrapeEpisodeThumbs
- POST /library/{id}/scrape、详情 scrape 状态;files/scrape writeNfo 与 scrape-batch write 走同一任务
- 迁移 0057_media_scrape、原因码、审计 organize.scrape
- 与 MP 输出的 NFO 差分测试(apps/server/test/scrape)

Co-Authored-By: Claude Opus 5.5 <[email protected]>

packages/contracts/test/db-sync.test.ts

@@ -63,6 +63,7 @@ const ROWS: Record<string, { row: Obj; dbOnly?: string[]; apiOnly?: string[] }>
   LibraryRoot: { row: C.LibraryRoot },
   MediaAsset: { row: C.MediaAsset },
   MediaEntity: { row: C.MediaEntity },
+  MediaScrape: { row: C.MediaScrape },
   MediaServerInstance: { row: C.MediaServerInstance },
   Observation: { row: C.Observation },
   OrganizationFileResult: { row: C.OrganizationFileResult },
@@ -209,6 +210,9 @@ const ENUMS: Record<string, z.ZodEnum> = {
   MediaAssetStatus: C.AssetStatus,
   MediaEntityKind: C.MediaKind,
   MediaEntityStatus: C.MediaEntityStatus,
+  MediaScrapeMode: C.ScrapeMode,
+  MediaScrapeStatus: C.ScrapeStatus,
+  MediaScrapeTrigger: C.ScrapeTrigger,
   MediaServerInstanceKind: C.MediaServerKind,
   MediaServerInstanceHealthStatus: C.InstanceHealth,
   ObservationStatus: C.ObservationStatus,