---
description: Implement an approved entity from the manifest
allowed-tools: Read, Write, Bash
---

# Implement Entity

Implement the entity: "$ARGUMENTS"

## CRITICAL RULES

⚠️ **GUARDRAIL ENFORCEMENT ACTIVE**

You can ONLY write to files that:
1. Are defined in `project_manifest.json`
2. Have status = `APPROVED`
3. Match the `file_path` in the manifest EXACTLY

## Steps

1. **Verify Phase**: Must be in `IMPLEMENTATION_PHASE`

2. **Find Entity** in manifest:
   - If "$ARGUMENTS" is `--all`: implement all APPROVED entities
   - Otherwise: find the specific entity by ID

3. **For Each Entity**:

   a. **Load Definition** from manifest
   
   b. **Verify Status** is `APPROVED`
   
   c. **Generate Code** matching the specification:
      - Props must match manifest exactly
      - Types must match manifest exactly
      - File path must match `file_path` in manifest
   
   d. **Write File** to the exact path in manifest
   
   e. **Run Validations**:
      ```bash
      npm run lint --if-present
      npm run type-check --if-present
      ```

4. **Status Updates** (handled by post-hook):
   - Entity status changes to `IMPLEMENTED`
   - Timestamp recorded

## Code Templates

### Component (Frontend)
```tsx
import React from 'react';

interface [Name]Props {
  // From manifest.props
}

export const [Name]: React.FC<[Name]Props> = (props) => {
  return (
    // Implementation
  );
};
```

### API Endpoint (Backend)
```typescript
import { Request, Response } from 'express';

export async function handler(req: Request, res: Response) {
  // From manifest.request/response schemas
}
```