Update pr_review_service.py

[Benji918]

No description provided.

[benji-review-ai-bot]

Okay, here's my review of the PR:

Bugs & Logic Errors

• Hardcoding the API key is a major bug. It invalidates the use of .env for secure configuration management.

Readability & Style

• No significant changes impacting readability except for the huge negative impact of hardcoding.

Best Practices

• Critical: Never hardcode API keys or secrets in code. This violates security best practices.

Security Risks

• Severe Security Risk: Hardcoding the API key exposes it directly. Someone could steal the key and cause financial or data exfiltration damage.

Actionable Feedback

• Immediately revert the change and restore the use of os.getenv("GEMINI_API_KEY"). Ensure the .env file is correctly configured and not committed to the repository. Investigate why the .env method was not working in the first place.