生成的密碼哈希:
Email: admin@example.com
Password: admin123
Hash: $2y$10$Me/5xNXrC6o0VcGZEO3er./rp16R2GMmaYiCiGMHRBuRarSCZDoOG

Email: teacher@example.com
Password: teacher123
Hash: $2y$10$3Anc8xoj2pTCnNvgCbTTYe9ph9hoI8MVCyW/UXRnK8cJJobJ1ayRm

Email: student@example.com
Password: student123
Hash: $2y$10$/crLIKV5DS/OLVsvGsumJejnaAhekF3YMZkMD6FPyNh6AYY4raXHm