Add Forgot Password and Password Reset Functionality

[HimasreeKolathur24]

Related Issue

Closes #1115

Summary

Implemented a Forgot Password and Password Reset workflow for the authentication system. Users can now reset their password through a dedicated reset password modal instead of being locked out when they forget their credentials.

Changes Made

• Added a "Forgot Password?" link to the login modal.
• Created a Reset Password modal with a UI consistent with the existing authentication design.
• Added frontend validation for password reset fields.
• Implemented password confirmation validation.
• Added a backend /api/auth/reset-password endpoint.
• Implemented password update functionality for existing users.
• Added modal close functionality using the × button.
• Added automatic field clearing after successful password reset.
• Added success feedback after password reset.

Testing

• Tested password reset for existing users.
• Tested password mismatch validation.
• Tested reset attempts with non-existent users.
• Verified successful login using the updated password.
• Verified old password no longer works after reset.
• Tested modal open and close functionality.
• Tested UI behavior and responsiveness locally.

Screenshots

Login Modal with Forgot Password Link

Reset Password Modal

Password Reset Success Flow

Checklist

• Code follows project style
• Tested locally
• No unrelated changes included
• Documentation updated (if applicable)