生成的密碼哈希:
Email: admin@example.com
Password: admin123
Hash: $2y$10$E1IcX5F2VHaJfoOI3kdbGuKC7sE0EHIHRPI1hmOa.ko6F1boOnOb.

Email: teacher@example.com
Password: teacher123
Hash: $2y$10$k20.Jcrwt/3RAkpWrLg2/u2pJPFznS3VVjItWlftzURDqIfOL8Ojy

Email: student@example.com
Password: student123
Hash: $2y$10$Hukem7aRdiViga4CxdOss.vHaHSqbQBJGdDsLdlfw30O75pH4uacS