优化有线传图页设备展示，并缓存传输模式选项。

未连接状态改为「未连接相机」；设备型号映射为可读名称而非 iPhone12,1 等内部代号；边拍边传/拍后传输按账号持久化并在下次进入时恢复。

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

suixinkanTests/TravelAlbum/DeviceModelNameResolverTests.swift

@@ -0,0 +1,24 @@
+//
+//  DeviceModelNameResolverTests.swift
+//  suixinkanTests
+//
+
+import XCTest
+@testable import suixinkan
+
+/// 设备型号解析测试。
+final class DeviceModelNameResolverTests: XCTestCase {
+    /// 测试常见硬件标识符能映射为可读型号。
+    func testKnownIdentifiersMapToMarketingNames() {
+        XCTAssertEqual(DeviceModelNameResolver.marketingName(forHardwareIdentifier: "iPhone10,3"), "iPhone X")
+        XCTAssertEqual(DeviceModelNameResolver.marketingName(forHardwareIdentifier: "iPhone10,6"), "iPhone X")
+        XCTAssertEqual(DeviceModelNameResolver.marketingName(forHardwareIdentifier: "iPhone12,1"), "iPhone 11")
+        XCTAssertEqual(DeviceModelNameResolver.marketingName(forHardwareIdentifier: "iPhone16,2"), "iPhone 15 Pro Max")
+    }
+
+    /// 测试未知标识符不回退为内部代号。
+    func testUnknownIdentifierUsesGenericFallback() {
+        XCTAssertEqual(DeviceModelNameResolver.marketingName(forHardwareIdentifier: "iPhone99,9"), "iPhone")
+        XCTAssertEqual(DeviceModelNameResolver.marketingName(forHardwareIdentifier: "iPad99,9"), "iPad")
+    }
+}