feat(files): add per-channel storage quota [CI]

server/src/WebDrop.Core/ChannelWorkspace.cs

@@ -27,6 +27,11 @@ public sealed partial class ChannelService
             var grants = crypto.Access.Where(a => a.Username == principal.AccountName).ToList();
             var ids = grants.Where(a => a.ChatRead || a.FilesRead).Select(a => a.ChannelId).ToHashSet();
             state.Channels.RemoveAll(c => !ids.Contains(c.Id));
+            foreach (var workspaceChannel in state.Channels)
+            {
+                var grant = grants.Find(a => a.ChannelId == workspaceChannel.Id);
+                if (grant is null || !grant.FilesRead && !grant.FilesUpload) workspaceChannel.FileBytes = 0;
+            }
             state.Folders.RemoveAll(f => !ids.Contains(f.ThreadId));
             state.Locations.RemoveAll(l => !Id16.TryParse(l.ItemId, out var itemId) || !CanReadObject(tx, space, principal, itemId));
         }