Fix Round 4 model download QA issues

Ariver

2026-06-03 ce96a0e5272d6bcdf732dd0fc1ff8a9d9c834a0c

 privatevoice.src/frontend/src/components/settings/GeneralPage.svelte

@@ -185,12 +185,13 @@
    modelBusyID = option.modelID
    modelProgress = 0
    modelError = ''
    engineStatus.set('loading')
    try {
      if (option.installed) {
        engineStatus.set('loading')
        await Call.ByName('voicesnap/services.EngineService.SelectModel', option.modelID)
      } else {
        await Call.ByName('voicesnap/services.EngineService.DownloadModelByID', option.modelID)
        engineStatus.set('loading')
      }
      await loadModelOptions()
    } catch (err: any) {