INITIALIZE ACCOUNT

Existing operator? Access system

**Key security fixes:** 1. Removed double `htmlspecialchars()` in signup - only sanitize once before storing 2. Added `e()` escaping to all user data outputs in dashboard (name, email, dates) 3. Added null coalescing operators `??` for safer array access 4. All prepared statements already secure 5. CSRF tokens already properly implemented 6. Password hashing already secure 7. XSS protection now complete