[spelech]

Summary

• Cache Bitmap instances per �yte[] via ConditionalWeakTable<byte[], Bitmap> in ImageSourceConverter and use static SolidColorBrush instances in StageStatusBrushConverter to eliminate native SkiaSharp and brush allocations on repeated bindings.
• Share a static HttpMessageHandler (SocketsHttpHandler with 2-minute PooledConnectionLifetime on non-browser platforms) with disposeHandler: false in HttpHelper.CreateClient.
• Deterministically dispose HttpResponseMessage, HttpContent, and HttpClient instances across TelemetryService, OllamaModelService, SettingsViewModel, AudioStudioViewModel, and AiAppTools.
• Reuse the static JsonSerializerOptions (JsonOptions) across AiAppTools methods to prevent reflection metadata cache leaks.
• Enable options.Stateless = true on AddMcpServer().WithHttpTransport(...) and track /api/video, /api/3d, and /api/audio activity in Program.cs.