Add performance diagnostics build

Ariver

2026-06-29 9d4f977026bbb4516f8cc97f715c0dc28bf2a13f

 privatevoice.src/internal/engine/engine_darwin.go

@@ -128,15 +128,9 @@
      config.ModelConfig.Transducer.Joiner = resolved.Files["joiner"]
      config.ModelConfig.ModelType = model.BackendNemoTransducer
   case model.BackendQwen3ASR:
      config.ModelConfig.Qwen3ASR.ConvFrontend = resolved.Files["conv_frontend"]
      config.ModelConfig.Qwen3ASR.Encoder = resolved.Files["encoder"]
      config.ModelConfig.Qwen3ASR.Decoder = resolved.Files["decoder"]
      config.ModelConfig.Qwen3ASR.Tokenizer = resolved.Files["tokenizer"]
      config.ModelConfig.Qwen3ASR.MaxTotalLen = 1024
      config.ModelConfig.Qwen3ASR.MaxNewTokens = 256
      config.ModelConfig.Qwen3ASR.Temperature = 0.0
      config.ModelConfig.Qwen3ASR.TopP = 0.9
      config.ModelConfig.Qwen3ASR.Seed = 0
      if err := applyQwen3ASRConfig(&config, resolved); err != nil {
         return sherpa.OfflineRecognizerConfig{}, err
      }
   default:
      return sherpa.OfflineRecognizerConfig{}, fmt.Errorf("unsupported backend kind: %s", resolved.BackendKind)
   }