Allow downloading projects that match fwdata project

backend/FwLite/FwLiteShared/Projects/CombinedProjectsService.cs

@@ -164,6 +164,8 @@ public async Task<DownloadProjectByCodeResult> DownloadProjectByCode(string code
             {
                 var (status, projectId) = await lexboxProjectService.GetLexboxProjectId(server, code);
                 if (status != DownloadProjectByCodeResult.Success) return status;
+                // Note: the project might be from a different server, but that's current only relevant for devs
+                // and we still can't download two projects with the same code
                 if (crdtProjectsService.ProjectExists(code)) return DownloadProjectByCodeResult.ProjectAlreadyDownloaded;
                 var role = userRole.HasValue ? FromRole(userRole.Value) : ProjectRole.Editor;
                 project = new ProjectModel(

frontend/viewer/src/home/Server.svelte

@@ -81,7 +81,7 @@
   }
 
   function validateCodeForDownload(projectCode: string): string | undefined {
-    if (localProjects.some(p => p.code === projectCode)) {
+    if (localProjects.some(p => p.code === projectCode && p.server?.id === server?.id)) {
       return $t`You have already downloaded the ${projectCode} project`;
     }
   }