Merge p19-w3-editmodal-holder into dev (register EditModalSaveContextHolder so AuthBlocks Users/Registrations pages render)

DeepDrftManager/Program.cs

@@ -34,6 +34,10 @@ var contentApiUrl = builder.Configuration["Api:ContentApiUrl"]
     ?? throw new InvalidOperationException("Api:ContentApiUrl is required");
 AuthBlocksWeb.Startup.ConfigureAuthServices(builder.Services, contentApiUrl);
 
+// Per-circuit bridge consumed by the AuthBlocks ModelView component (Users/Registrations pages).
+// ModelView has a required [Inject] of this type; without it the circuit throws on component init.
+builder.Services.AddScoped<Web.Maintenance.Entities.EditModalSaveContextHolder>();
+
 // Named HttpClient for unauthenticated Content API calls (CmsTrackService proxying WAV data
 // to DeepDrftAPI's POST api/track/upload). API key added per-request by the service.
 builder.Services.AddHttpClient("DeepDrft.Content", client =>