feat: 新增文件压缩功能和通用确认弹窗

后端新增 POST api/files/compress 接口，使用 DotNetZip 将单个文件压缩为 ZIP，
密码固定为文件名去掉后缀，压缩前自动删除同名旧 ZIP。
前端新增 ConfirmModal 通用确认弹窗，替代所有 window.confirm/alert，
在文件列表中增加压缩按钮，压缩前显示确认弹窗。

FileShare-Services/Endpoints/AppEndpoints.cs

@@ -86,6 +86,10 @@ namespace FileShare_Services.Endpoints
                     .WithOpenApi("FileLibrary", "永久删除文件（物理文件+数据库记录）。")
                     .WithName("DeleteFile");
 
+                endpoints.MapPost<IFileLibraryEndpointService, CompressFileRequest>("api/files/compress", (service, request, _) => service.CompressFileAsync(request))
+                    .WithOpenApi("FileLibrary", "压缩文件为 ZIP（可选密码）。")
+                    .WithName("CompressFile");
+
                 endpoints.MapGet<IFileLibraryEndpointService, FileQueryRequest>("api/files/detail", (service, request, _) => service.GetFileAsync(request))
                     .WithOpenApi("FileLibrary", "查询文件详情。")
                     .WithName("GetFileDetail");

FileShare-Services/FileShare-Services.csproj

@@ -9,6 +9,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="10.0.7" />
+    <PackageReference Include="DotNetZip" Version="1.16.0" />
     <PackageReference Include="QRCoder" Version="1.8.0" />
     <PackageReference Include="Serilog" Version="4.2.0" />
     <PackageReference Include="Serilog.Sinks.Console" Version="6.0.0" />

FileShare-Services/Services/FileLibrary/FileLibraryContracts.cs

@@ -40,6 +40,12 @@ namespace FileShare_Services.Services.FileLibrary
     public sealed record DeleteFileRequest(
         [property: JsonPropertyName("id")] int Id);
 
+    /// <summary>
+    /// 压缩文件的请求。
+    /// </summary>
+    public sealed record CompressFileRequest(
+        [property: JsonPropertyName("id")] int Id);
+
     /// <summary>
     /// 查询服务器子目录的请求。
     /// </summary>

FileShare-Services/Services/FileLibrary/FileLibraryEndpointService.cs

@@ -121,6 +121,14 @@ namespace FileShare_Services.Services.FileLibrary
             return ResponseHelper.Succeed("文件已永久删除。");
         }
 
+        /// <inheritdoc />
+        public async Task<IApiResponse> CompressFileAsync(CompressFileRequest request)
+        {
+            ValidateFileId(request.Id);
+            await fileLibrary.CompressFileAsync(request.Id);
+            return ResponseHelper.Succeed("文件已压缩。");
+        }
+
         /// <summary>
         /// 验证文件 ID 是否有效，无效时抛出 <see cref="ArgumentException"/>。
         /// </summary>

FileShare-Services/Services/FileLibrary/FileLibraryService.cs

@@ -2,6 +2,7 @@ using FileShare_Common.Core;
 using FileShare_EFCore.Database;
 using FileShare_EFCore.Models;
 using FileShare_Services.Core;
+using Ionic.Zip;
 using Microsoft.EntityFrameworkCore;
 using System.Text;
 
@@ -593,6 +594,36 @@ namespace FileShare_Services.Services.FileLibrary
             await db.SaveChangesAsync(cancellationToken);
         }
 
+        /// <inheritdoc />
+        public async Task CompressFileAsync(int id, CancellationToken cancellationToken = default)
+        {
+            var record = await db.ManagedFileRecords
+                .FirstOrDefaultAsync(f => f.Id == id && f.Exists, cancellationToken)
+                ?? throw new InvalidOperationException("文件不存在。");
+
+            if (!File.Exists(record.AbsolutePath))
+                throw new FileNotFoundException("源文件不存在于磁盘。");
+
+            var dir = Path.GetDirectoryName(record.AbsolutePath)!;
+            var nameWithoutExt = Path.GetFileNameWithoutExtension(record.FileName);
+            var zipPath = Path.Combine(dir, nameWithoutExt + ".zip");
+
+            // 删除已存在的同名 ZIP
+            if (File.Exists(zipPath))
+            {
+                File.Delete(zipPath);
+            }
+
+            // 密码为文件名去掉后缀
+            var zipPassword = nameWithoutExt.ToLower();
+
+            // 创建 ZIP
+            using var zip = new Ionic.Zip.ZipFile();
+            zip.Password = zipPassword;
+            zip.AddFile(record.AbsolutePath, "");
+            zip.Save(zipPath);
+        }
+
         /// <summary>
         /// 深度优先遍历目录树，枚举所有被 <see cref="MediaFileTypes"/> 支持的媒体文件路径。
         /// 遇到无权限的目录时跳过该分支继续遍历。

FileShare-Services/Services/FileLibrary/IFileLibraryEndpointService.cs

@@ -112,5 +112,12 @@ namespace FileShare_Services.Services.FileLibrary
         /// <param name="request">包含文件 ID 的请求。</param>
         /// <returns>API 响应。</returns>
         Task<IApiResponse> DeleteFileAsync(DeleteFileRequest request);
+
+        /// <summary>
+        /// 压缩指定文件为 ZIP（密码为文件名去掉后缀）。
+        /// </summary>
+        /// <param name="request">包含文件 ID 的请求。</param>
+        /// <returns>API 响应。</returns>
+        Task<IApiResponse> CompressFileAsync(CompressFileRequest request);
     }
 }

FileShare-Services/Services/FileLibrary/IFileLibraryService.cs

@@ -128,5 +128,12 @@ namespace FileShare_Services.Services.FileLibrary
         /// <param name="id">文件记录 ID。</param>
         /// <param name="cancellationToken">取消令牌。</param>
         Task DeleteFileAsync(int id, CancellationToken cancellationToken = default);
+
+        /// <summary>
+        /// 将指定文件压缩为 ZIP（密码为文件名去掉后缀），存储在源文件同级目录。
+        /// </summary>
+        /// <param name="id">文件记录 ID。</param>
+        /// <param name="cancellationToken">取消令牌。</param>
+        Task CompressFileAsync(int id, CancellationToken cancellationToken = default);
     }
 }