Method isModelDownloaded

frontend/src/lib/ai/modelManager.ts:141–144

(modelId: string)

  // Check if a model is downloaded
  isModelDownloaded(modelId: string): boolean {
    const models = this.getDownloadedModels();
    return models.some(m => m.id === modelId && m.isDownloaded);
  }

  // Get a specific downloaded model
  getDownloadedModel(modelId: string): LocalModel | undefined {