- Move session storage from in-memory to database
- Add Session model and auto-migrate table
- Set session expiration to 30 days
- Add /api/session/verify endpoint for frontend validation
- Add background session cleanup task (hourly)
- Frontend now verifies session validity on page load
- Clear localStorage when session expires
- Fixed verifyAssignment being too strict for new clients
- Fixed parseRequestedIP string conversion bug
- Fixed response sent to 0.0.0.0 instead of broadcast address
- Added SO_BROADCAST support for UDP socket
- Fixed session persistence after page refresh (localStorage)
- Added in-memory session store for auth middleware
- Added config reloader so DHCP server picks up web UI changes dynamically
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