将 otg_swift OTG 引擎迁入 Core/CameraOTG，并接入旅拍有线传图与历史导入。

恢复 USB 相机连接、边拍边传、三品牌驱动与 SwiftUI 历史导入页，通过适配层对接现有本地上传与 OSS 管道。

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

suixinkanTests/CameraOTG/OTGPhotoStorageTests.swift

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+//
+//  OTGPhotoStorageTests.swift
+//  suixinkanTests
+//
+
+import XCTest
+@testable import suixinkan
+
+/// OTGPhotoFileWriter scoped 路径写入与去重测试。
+final class OTGPhotoStorageTests: XCTestCase {
+    private let accountKey = "test_account"
+    private let albumID = 12345
+
+    override func tearDown() {
+        let directory = OTGPhotoFileWriter.originalsDirectory(accountKey: accountKey, albumID: albumID)
+        try? FileManager.default.removeItem(at: directory.deletingLastPathComponent())
+        super.tearDown()
+    }
+
+    /// 测试 scoped 原图目录按账号与相册隔离。
+    func testOriginalsDirectoryScopedByAccountAndAlbum() {
+        let directory = OTGPhotoFileWriter.originalsDirectory(accountKey: accountKey, albumID: albumID)
+        XCTAssertTrue(directory.path.contains("CameraDownloads"))
+        XCTAssertTrue(directory.path.contains("\(albumID)"))
+        XCTAssertTrue(directory.lastPathComponent == "originals")
+        XCTAssertTrue(FileManager.default.fileExists(atPath: directory.path))
+    }
+
+    /// 测试 writeImage 落盘并返回相对路径。
+    func testWriteImageReturnsRelativePath() throws {
+        let data = Data(repeating: 0xAB, count: 64)
+        let fileURL = try OTGPhotoFileWriter.writeImage(
+            data,
+            filename: "DSC_0001.JPG",
+            accountKey: accountKey,
+            albumID: albumID
+        )
+        XCTAssertTrue(FileManager.default.fileExists(atPath: fileURL.path))
+
+        let relativePath = OTGPhotoFileWriter.relativePath(for: fileURL)
+        XCTAssertFalse(relativePath.hasPrefix("/"))
+        XCTAssertTrue(relativePath.contains("DSC_0001.JPG"))
+
+        let resolved = CameraDownloadStorage.resolveLocalURL(from: relativePath)
+        XCTAssertEqual(resolved?.standardizedFileURL, fileURL.standardizedFileURL)
+    }
+
+    /// 测试同名文件自动追加序号避免覆盖。
+    func testUniqueFileURLAppendsCounterForDuplicates() throws {
+        let data = Data(repeating: 0xCD, count: 16)
+        let firstURL = try OTGPhotoFileWriter.writeImage(
+            data,
+            filename: "duplicate.JPG",
+            accountKey: accountKey,
+            albumID: albumID
+        )
+        let secondURL = try OTGPhotoFileWriter.uniqueFileURL(
+            filename: "duplicate.JPG",
+            accountKey: accountKey,
+            albumID: albumID
+        )
+
+        XCTAssertNotEqual(firstURL.lastPathComponent, secondURL.lastPathComponent)
+        XCTAssertTrue(secondURL.lastPathComponent.contains("duplicate_1"))
+    }
+
+    /// 测试 moveDownloadedFile 将临时文件移入 scoped 目录。
+    func testMoveDownloadedFileIntoScopedDirectory() throws {
+        let tempURL = FileManager.default.temporaryDirectory.appendingPathComponent("otg-move-test.JPG")
+        try Data(repeating: 0xEF, count: 32).write(to: tempURL)
+        defer { try? FileManager.default.removeItem(at: tempURL) }
+
+        let destination = try OTGPhotoFileWriter.moveDownloadedFile(
+            from: tempURL,
+            filename: "imported.JPG",
+            accountKey: accountKey,
+            albumID: albumID
+        )
+        XCTAssertTrue(FileManager.default.fileExists(atPath: destination.path))
+        XCTAssertFalse(FileManager.default.fileExists(atPath: tempURL.path))
+    }
+}