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/App/AppDelegate.swift

@@ -87,12 +87,5 @@ final class AppDelegate: NSObject, UIApplicationDelegate {
         }
     }
 
-    func applicationWillTerminate(_ application: UIApplication) {
-        let semaphore = DispatchSemaphore(value: 0)
-        Task { @MainActor in
-            await CameraTetheringSession.shutdown()
-            semaphore.signal()
-        }
-        _ = semaphore.wait(timeout: .now() + 2)
-    }
+    func applicationWillTerminate(_ application: UIApplication) {}
 }