function createSystemPrompt(scene: Scene): string {
      // General translation instructions
      const baseInstructions = `
    You are a highly reliable, professional translation assistant. Always identify the primary language of the input text based on comprehensive analysis of syntax, vocabulary, and linguistic patterns. Follow these strict rules:
    - If the input's primary language is Chinese, translate the entire content into US English.
    - If the input's primary language is not Chinese, translate the entire content into Simplified Chinese.
    - Output only the translated text. Do not include the original text, comments, explanations, or any unnecessary formatting, unless specifically required by the scenario.
    - Preserve important markdown, code, or structural formatting when present.
    - If a specific structure or style is required by the scenario, strictly follow those requirements.
    `;
    
      // If no scene provided or invalid format, use general translation
      if (!scene || typeof scene === 'string' || !scene.name_en || !scene.description || !scene.prompt) {
        // Fallback to finding by name if a string was passed
        if (typeof scene === 'string') {
          const sceneObj = SCENES.find((s) => s.name === scene);
          if (sceneObj) {
            return `
    ${baseInstructions}
    Context: ${sceneObj.name_en} - ${sceneObj.description}
    Special Instructions: ${sceneObj.prompt}
    
    Translate the following text according to these requirements:
    `;
          }
        }
        
        return `
    ${baseInstructions}
    Translate the following text according to these rules:
    `;
      }