📋 Create Executive Security Reporting Dashboard

# 🧠 Concept
Provide high-level security insights for stakeholders.

## ⚠️ Problem
Executives require summarized security visibility.

## 📁 Implementation Scope
- apps/web/app/executive/

## ✅ Requirements
- Security posture summary
- Incident trends
- Risk overview

## 🎯 Acceptance Criteria
- [ ] Dashboard implemented
- [ ] Metrics accurate
- [ ] Reports exportable