## Task

Evaluate this code review comment. Read the source file and determine if the issue is valid.

**Instructions:**
1. Read the file mentioned in the review: `packages/core/ai_content_platform/vimax/agents/storyboard_artist.py`
2. Check line 389 and surrounding context
3. Determine if the review feedback is valid
4. If valid: Fix the issue in the code
5. If invalid: Explain why the feedback doesn't apply

**Important:** Be concise. Either fix the code or explain in 2-3 sentences why it's not applicable.

---

# Review Comment

- **Author:** gemini-code-assist[bot]
- **File:** `packages/core/ai_content_platform/vimax/agents/storyboard_artist.py`
- **Line:** 389
- **Date:** 2026-02-07
- **Comment ID:** 2777640363
- **URL:** https://github.com/donghaozhang/video-agent-skill/pull/22#discussion_r2777640363

---

![security-medium](https://www.gstatic.com/codereviewagent/security-medium-priority.svg) ![medium](https://www.gstatic.com/codereviewagent/medium-priority.svg)

This block directly appends character descriptions to the prompt, making it susceptible to prompt injection if the description in the registry is malicious. It's crucial to sanitize inputs before using them in prompts. Additionally, this logic is nearly identical to that in the `_build_prompt` method; consider extracting it into a dedicated helper method to avoid code duplication and improve maintainability.

```suggestion
                    if desc:
                        clean_desc = desc.replace("\n", " ").replace("[", "(").replace("]", ")")
                        prompt += f" {name}: {clean_desc}."
```
