Update OTG transfer workflow

suixinkan/Features/TravelAlbum/OTG/Storage/TravelAlbumOTGPhotoStore.swift

@@ -89,7 +89,8 @@ protocol PhotoRepositoryProtocol {
     func fetchPhotos(albumID: Int) throws -> [TravelAlbumOTGPhotoRecord]
 
     /// 添加一张已下载到本地的照片。
-    func addPhoto(albumID: Int, localPath: String, createdAt: Date) throws
+    @discardableResult
+    func addPhoto(albumID: Int, localPath: String, createdAt: Date) throws -> TravelAlbumOTGPhotoRecord
 
     /// 删除指定照片及本地文件。
     func deletePhoto(photoID: String, albumID: Int) throws
@@ -110,12 +111,15 @@ final class TravelAlbumOTGPhotoRepository: PhotoRepositoryProtocol {
     }
 
     /// 添加一张已下载到本地的照片。
-    func addPhoto(albumID: Int, localPath: String, createdAt: Date) throws {
+    @discardableResult
+    func addPhoto(albumID: Int, localPath: String, createdAt: Date) throws -> TravelAlbumOTGPhotoRecord {
         let fileURL = URL(fileURLWithPath: localPath)
         let attributes = try? FileManager.default.attributesOfItem(atPath: localPath)
         let size = (attributes?[.size] as? NSNumber)?.int64Value ?? 0
         let userId = storage.context.userId
-        guard !userId.isEmpty else { return }
+        guard !userId.isEmpty else {
+            throw CameraError.connectionFailed("用户信息缺失，无法保存照片")
+        }
 
         let record = TravelAlbumOTGPhotoRecord(
             id: TravelAlbumOTGPhotoStore.photoId(for: fileURL.lastPathComponent, createdAt: createdAt),
@@ -128,6 +132,7 @@ final class TravelAlbumOTGPhotoRepository: PhotoRepositoryProtocol {
             userId: userId
         )
         storage.upsert(record, albumId: albumID)
+        return record
     }
 
     /// 删除指定照片及本地文件。