对齐旅拍相册详情页 Android UI，并修复网格预览与布局问题。

重构相册详情为信息卡片、Tab 筛选、排序、批量删除与底部上传栏；修复网格重叠、禁用按钮蒙层，并支持点击预览大图。同步扩展素材列表 API 与 ViewModel 分页逻辑，并优化有线传图缩略图与传输性能。

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

suixinkan/Features/TravelAlbum/Models/TravelAlbumModels.swift

@@ -161,6 +161,18 @@ struct TravelAlbumMaterial: Decodable, Identifiable, Equatable {
         createdAt = container.lossyString(forKey: .createdAt)
         updatedAt = container.lossyString(forKey: .updatedAt)
     }
+
+    /// 预览用大图 URL，优先原图地址。
+    var previewURLString: String {
+        if !fileURL.isEmpty { return fileURL }
+        return coverURL
+    }
+
+    /// 列表缩略图 URL，优先封面。
+    var thumbnailURLString: String {
+        if !coverURL.isEmpty { return coverURL }
+        return fileURL
+    }
 }
 
 /// 创建旅拍相册请求。
@@ -308,7 +320,10 @@ struct WiredTransferPhotoItem: Identifiable, Equatable {
     let id: String
     let sourceId: String
     let fileName: String
+    /// 列表使用的缩略图 URL，优先指向本地小图或远程封面。
     let thumbnailURL: String
+    /// 预览使用的大图 URL，优先指向本地原图。
+    let previewURL: String
     let capturedAt: String
     let fileSizeText: String
     let resolutionText: String
@@ -321,6 +336,7 @@ struct WiredTransferPhotoItem: Identifiable, Equatable {
         sourceId: String? = nil,
         fileName: String,
         thumbnailURL: String,
+        previewURL: String = "",
         capturedAt: String,
         fileSizeText: String,
         resolutionText: String = "",
@@ -332,6 +348,7 @@ struct WiredTransferPhotoItem: Identifiable, Equatable {
         self.sourceId = sourceId ?? id
         self.fileName = fileName
         self.thumbnailURL = thumbnailURL
+        self.previewURL = previewURL
         self.capturedAt = capturedAt
         self.fileSizeText = fileSizeText
         self.resolutionText = resolutionText
@@ -385,8 +402,15 @@ struct WiredTransferPhotoRecord: Codable, Equatable {
     let updatedAt: TimeInterval
 
     func toPhotoItem() -> WiredTransferPhotoItem {
-        let previewCandidates = [thumbnailPath, localPath, remoteURL]
-        let thumbnailURL = previewCandidates.compactMap { path -> String? in
+        let thumbnailCandidates = [thumbnailPath, remoteURL]
+        let thumbnailURL = thumbnailCandidates.compactMap { path -> String? in
+            guard !path.isEmpty else { return nil }
+            if path.hasPrefix("http") { return path }
+            let preview = CameraDownloadStorage.previewURLString(from: path)
+            return preview.isEmpty ? nil : preview
+        }.first ?? ""
+        let previewCandidates = [localPath, remoteURL, thumbnailPath]
+        let previewURL = previewCandidates.compactMap { path -> String? in
             guard !path.isEmpty else { return nil }
             if path.hasPrefix("http") { return path }
             let preview = CameraDownloadStorage.previewURLString(from: path)
@@ -398,6 +422,7 @@ struct WiredTransferPhotoRecord: Codable, Equatable {
             sourceId: sourceId,
             fileName: fileName,
             thumbnailURL: thumbnailURL,
+            previewURL: previewURL,
             capturedAt: capturedAt,
             fileSizeText: Self.formatFileSize(fileSizeBytes),
             status: WiredTransferUploadStatus(rawValue: status) ?? .pending,
@@ -465,6 +490,16 @@ extension Array where Element == WiredTransferPhotoItem {
         Set(filter { $0.canSelectForSpecifyUpload }.map(\.id))
     }
 
+    /// 按拍摄时间倒序排列，最新照片在最前。
+    func sortedByCaptureTimeDescending() -> [WiredTransferPhotoItem] {
+        sorted { lhs, rhs in
+            let leftDate = lhs.capturedDate() ?? .distantPast
+            let rightDate = rhs.capturedDate() ?? .distantPast
+            if leftDate != rightDate { return leftDate > rightDate }
+            return lhs.id > rhs.id
+        }
+    }
+
     /// 构建 30 分钟时间段分组列表。
     func buildPhotoSections() -> [WiredTransferPhotoSection] {
         let grouped = Dictionary(grouping: compactMap { photo -> (Date, WiredTransferPhotoItem)? in