- Created AccountLockoutService to track failed login attempts
- Accounts are locked after 5 failed attempts within 15 minutes
- Lockout duration: 30 minutes (auto-unlock)
- Service uses Redis for persistence (fail-open if Redis unavailable)
- Integrated into AuthService Login method:
* Check account lockout status before login
* Record failed attempts (even for non-existent users to prevent enumeration)
* Reset failed attempts counter on successful login
* Auto-unlock expired accounts
- Added SetAccountLockoutService method to AuthService
- Service initialized in router when Redis is available
Phase: PHASE-4
Priority: P1
Progress: 9/267 (3.4%)
