Files
Training-VehicleService-May26/Trenser.VehicleServiceSystem
joelthomastrenser 31e660bc9e Fix: add duplicate user validation and update register customer UI
- add username duplicate validation
- add email duplicate validation
- add phone duplicate validation
- move duplicate checks to Validator utility
- add Register Customer header
- update registration success message

Fixes #1737
2026-05-26 16:47:11 +05:30
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