feat(api): delete workspace groups and record who signed a content event

server/src/WebDrop.Api/ApiContract.cs

@@ -6,5 +6,5 @@ public static class ApiContract
     // 去掉设备名与设备清单接口。设备只是账号的属性。
     // v8: 频道强制登录,去掉未登录访客(allow_guests、/guests、终端席位);便捷分享不受影响。
     // Keep this aligned with contracts/api-contract.json and docs/openapi.yaml.
-    public const string Version = "8.0.0";
+    public const string Version = "8.1.0";
 }

server/src/WebDrop.Api/Endpoints.Workspace.cs

@@ -42,6 +42,8 @@ public static partial class Endpoints
             var req = await ReadJson(ctx.Request, ApiJson.Default.WorkspaceNameRequest, ct);
             return Json(View(svc.RenameWorkspaceGroup(ParseId(id), RequestAuth.FromHeaders(ctx.Request, false), groupId, req.Name)), ApiJson.Default.WorkspaceBody);
         });
+        api.MapDelete("/spaces/{id}/groups/{groupId}", (string id, string groupId, HttpContext ctx, ChannelService svc) =>
+            Json(View(svc.DeleteWorkspaceGroup(ParseId(id), RequestAuth.FromHeaders(ctx.Request, false), groupId)), ApiJson.Default.WorkspaceBody));
         api.MapPost("/spaces/{id}/folders", async (string id, HttpContext ctx, ChannelService svc, CancellationToken ct) =>
         {
             var req = await ReadJson(ctx.Request, ApiJson.Default.WorkspaceFolderRequest, ct);