## 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 145 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:** 145
- **Date:** 2026-02-07
- **Comment ID:** 2777640365
- **URL:** https://github.com/donghaozhang/video-agent-skill/pull/22#discussion_r2777640365

---

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

User-provided character descriptions are concatenated directly into the image generation prompt. If a description in the portrait registry contains malicious instructions (e.g., prompt injection attacks), it can manipulate the behavior of the AI model. 

Consider sanitizing the description by removing or escaping characters that could be used for injection, such as newlines or brackets, or by using a more structured prompt format.

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