移除 Core 层 OTG 相机实现，保留旅拍有线传图 UI 与本地照片上传能力。

将本地存储与上传编排下沉到 Features/TravelAlbum，删除 USB/PTP 相关代码与测试。

Co-authored-by: Cursor <cursoragent@cursor.com>

suixinkan/Features/TravelAlbum/Models/CameraTransferModels.swift

@@ -0,0 +1,83 @@
+//
+//  CameraTransferModels.swift
+//  suixinkan
+//
+
+import Foundation
+
+/// 有线传图任务状态。
+enum CameraTransferStatus: String, Codable, Equatable {
+    case pending
+    case downloading
+    case downloaded
+    case uploading
+    case uploaded
+    case failed
+}
+
+/// 有线传图任务，表示单张照片从本地到上传登记的记录。
+struct CameraTransferTask: Identifiable, Equatable, Codable {
+    let id: UUID
+    let assetID: String
+    let filename: String
+    var localPath: String?
+    var remoteURL: String?
+    /// 拍摄时间，格式 `yyyy-MM-dd HH:mm:ss`。
+    var capturedAt: String?
+    var status: CameraTransferStatus
+    var progress: Int
+    var errorMessage: String?
+
+    /// 初始化传图任务。
+    init(
+        id: UUID = UUID(),
+        assetID: String,
+        filename: String,
+        localPath: String? = nil,
+        remoteURL: String? = nil,
+        capturedAt: String? = nil,
+        status: CameraTransferStatus = .pending,
+        progress: Int = 0,
+        errorMessage: String? = nil
+    ) {
+        self.id = id
+        self.assetID = assetID
+        self.filename = filename
+        self.localPath = localPath
+        self.remoteURL = remoteURL
+        self.capturedAt = capturedAt
+        self.status = status
+        self.progress = progress
+        self.errorMessage = errorMessage
+    }
+
+    /// 将日期格式化为列表使用的拍摄时间字符串。
+    static func capturedAtString(from date: Date?) -> String {
+        Self.capturedAtFormatter.string(from: date ?? Date())
+    }
+
+    /// 从本地文件推断拍摄时间。
+    static func capturedAtString(forLocalPath path: String) -> String? {
+        guard let url = CameraDownloadStorage.resolveLocalURL(from: path),
+              FileManager.default.fileExists(atPath: url.path),
+              let attributes = try? FileManager.default.attributesOfItem(atPath: url.path)
+        else { return nil }
+
+        let date = (attributes[.creationDate] as? Date)
+            ?? (attributes[.modificationDate] as? Date)
+        return date.map { capturedAtString(from: $0) }
+    }
+
+    private static let capturedAtFormatter: DateFormatter = {
+        let formatter = DateFormatter()
+        formatter.locale = Locale(identifier: "zh_CN")
+        formatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
+        return formatter
+    }()
+
+    /// 本地文件 URL，支持相对 Documents 的 scoped 路径与绝对路径。
+    var localURL: URL? {
+        guard let localPath, !localPath.isEmpty else { return nil }
+        return CameraDownloadStorage.resolveLocalURL(from: localPath)
+    }
+}