## 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_pipeline/ai_content_pipeline/project_structure.py`
2. Check line 199 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_pipeline/ai_content_pipeline/project_structure.py`
- **Line:** 199
- **Date:** 2026-02-01
- **Comment ID:** 2750592635
- **URL:** https://github.com/donghaozhang/video-agent-skill/pull/15#discussion_r2750592635

---

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

The `root_dir` parameter is not used within this function. Removing it will make the function signature cleaner and easier to understand.

```python
def get_destination_folder(
    file_path: Path
) -> Optional[str]:
```
