Detect Redundant Event Parameters

# 🧠 Concept  
Detect unnecessary duplicated event fields.

## ⚠️ Problem  
Redundant parameters increase log costs.

## 📁 Implementation Scope  
- `rules/auditability/events/`

## ✅ Requirements  
- Analyze repeated parameters  
- Suggest cleanup  

## 🎯 Acceptance Criteria  
- [ ] Redundant event fields detected  