- Move .ToList() after .Skip().Take() in ContactController, QuotesController, SettingsController - Prevents loading entire tables into memory for paginated queries
- Add null checks after FirstOrDefault() before property access - Guard navigation property access (Locations, AssignToUser, ApplicationUser, POC, Contacts) - Null-coalesce string properties in search/filter LINQ queries - Protect Sum() on nullable LineItems collections - Change FirstAsync to FirstOrDefaultAsync with null guard in UserController - Add null check on model.Attachments iteration in EditWorkorder