完善 OTG 相机有线传图：支持 Sony/Canon 自动识别，页面 detach 保持会话以便再次进入复连。

引入进程级 CameraTetheringSession 与共享 USB Browser；离开传图页仅取消 UI 回调，App 终止时再完整 shutdown 释放 PTP 与 Browser 资源。

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

suixinkanTests/TravelAlbum/WiredCameraTransferViewModelTests.swift

@@ -46,6 +46,40 @@ final class WiredCameraTransferViewModelTests: XCTestCase {
         XCTAssertEqual(viewModel.photos.first?.fileName, "DSC_NEW.JPG")
     }
 
+    /// 测试 start 被取消时 detach UI 回调，但不 shutdown 相机连接。
+    func testStartCancellationDetachesWithoutShutdown() async {
+        let camera = DisconnectTrackingWiredCameraService()
+        let context = WiredTransferContext(
+            albumId: 6603,
+            albumName: "测试相册",
+            phone: "",
+            orderNumber: ""
+        )
+        let viewModel = WiredCameraTransferViewModel(context: context, cameraService: camera)
+        let account = AccountContext()
+        account.applyLogin(profile: AccountProfile(userId: "101", displayName: "测试"))
+
+        let startTask = Task {
+            await viewModel.start(
+                api: MockTravelAlbumAPIForWiredTransfer(),
+                ossService: WiredTransferMockOSSUploadService(),
+                scenicID: 1,
+                accountContext: account
+            )
+        }
+
+        for _ in 0 ..< 100 {
+            if camera.connectCount > 0 { break }
+            try? await Task.sleep(nanoseconds: 10_000_000)
+        }
+
+        startTask.cancel()
+        try? await Task.sleep(nanoseconds: 300_000_000)
+
+        XCTAssertGreaterThanOrEqual(camera.detachCount, 1)
+        XCTAssertEqual(camera.shutdownCount, 0)
+    }
+
     /// 测试绑定到其他相册的照片不会出现在当前相册列表。
     func testPhotoBoundToOtherAlbumIsFilteredOut() async throws {
         let bindingStore = WiredTransferPhotoStore(
@@ -655,6 +689,35 @@ final class WiredCameraTransferViewModelTests: XCTestCase {
     }
 }
 
+@MainActor
+private final class DisconnectTrackingWiredCameraService: CameraServiceProtocol {
+    let brand: CameraBrand = .sony
+    var connectionState: CameraConnectionState = .disconnected
+    var onConnectionStateChange: ((CameraConnectionState) -> Void)?
+    var onNewAsset: ((CameraAsset) -> Void)?
+    private(set) var connectCount = 0
+    private(set) var detachCount = 0
+    private(set) var shutdownCount = 0
+
+    func connect() async {
+        connectCount += 1
+        connectionState = .connected(deviceName: "Mock")
+        onConnectionStateChange?(.connected(deviceName: "Mock"))
+        while !Task.isCancelled {
+            try? await Task.sleep(nanoseconds: 50_000_000)
+        }
+    }
+
+    func detachFromUI() { detachCount += 1 }
+    func shutdown() async { shutdownCount += 1 }
+
+    func listAssets() async throws -> [CameraAsset] { [] }
+
+    func downloadAsset(_ asset: CameraAsset) async throws -> URL {
+        FileManager.default.temporaryDirectory.appendingPathComponent(asset.filename)
+    }
+}
+
 @MainActor
 private final class MockWiredCameraService: CameraServiceProtocol {
     let brand: CameraBrand = .sony
@@ -664,7 +727,8 @@ private final class MockWiredCameraService: CameraServiceProtocol {
     var downloadURL: URL?
 
     func connect() async {}
-    func disconnect() async {}
+    func detachFromUI() {}
+    func shutdown() async {}
 
     func listAssets() async throws -> [CameraAsset] {
         []