## Description
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## Changes Made
<!-- List the main changes in this PR. If any changes seem unrelated to the PR title, explain why they're included here or consider moving them to a follow-up PR -->
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## Pre-Review Checklist
- [ ] **Build passes**: All builds (lint, typecheck, tests) pass locally
- [ ] **AI-generated code reviewed**: Removed unnecessary comments and ensured code quality
- [ ] **Changes explained**: All changes are properly documented and justified above
- [ ] **Scope appropriate**: All changes relate to the PR title, or explanations provided for why they're included
- [ ] **Video demo**: A small video demo showing changes works as expected and did not break any existing functionality using [Agent Playground](https://agents-playground.livekit.io/#cam=0&mic=1&screen=1&video=1&audio=1&chat=1&theme_color=green) (if applicable) 

## Testing
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- [ ] Automated tests added/updated (if applicable)
- [ ] All tests pass
- [ ] Make sure both `restaurant_agent.ts` and `realtime_agent.ts` work properly (for major changes)

## Additional Notes
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**Note to reviewers**: Please ensure the pre-review checklist is completed before starting your review.