feat(auth) : Implemented user authentication

[dwivediprashant]

Issue: #111

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Video preview

echo.1.mp4

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PR description

• User auth implemented
• Password is hashed using bcrypt and stored in DB
• Proper auth error handled for wrong and empty password entered by user
• No mock data used all data is real-time
• Local testing is done without any error or terminal warning
• Added .env.example for other developers reference

DB user model stored as below

 {
    _id: ObjectId('695ed37877355804dd4964e6'),
    username: 'amit',
    password: '$2b$10$pjeBWD.KzWyzsuz6ywSIZuDCZk3xUgd40elKw.JORdJTIL/m8GOe2',
    connectedAt: ISODate('2026-01-07T21:43:20.923Z'),
    isOnline: true,
    __v: 0
  }

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Chat clip

[OpenGitBot]

Hey @dwivediprashant

Thanks for opening this PR 🚀. Mentor will review your pull request soon and till then, keep contributing and stay calm.

Thanks for contributing in OpenCode'25 ✨✨!