🌟 [Good First Issue] Add Performance Metrics to API Responses

[superninja-app]

🎯 Objective

Provide users with performance metrics for API operations to help with optimization and monitoring.

📝 Description

Add performance timing information to API responses so users can understand how long operations take and identify bottlenecks.

🔧 Tasks

1. Add timing middleware to track request duration
2. Include performance data in API responses
3. Create performance dashboard endpoint
4. Add documentation for performance metrics

📁 Files to Modify

• core/src/api/middleware.rs
• core/src/api/handlers/
• docs/api/API_REFERENCE.md

🎨 Example

{
  "data": { ... },
  "performance": {
    "request_id": "req_123456",
    "duration_ms": 145,
    "cache_hit": false,
    "database_queries": 3
  }
}

✅ Acceptance Criteria

• All API responses include performance metrics
• Performance dashboard shows real-time metrics
• Documentation explains all available metrics
• No significant performance overhead from timing

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Great for learning API development! This issue teaches middleware implementation and performance monitoring while adding valuable features to GhostAntivirus.

Estimated time: 3-5 hours
Difficulty: Beginner to Intermediate
Mentorship available: Yes! We'll guide you through middleware concepts.

🚀 Want to contribute? Fork and submit a pull request with your implementation!