models/user.rs - User Account and Authentication Models

Requirements and Dataflow

• Defines user account data structures with authentication and profile information
• Supports multiple authentication providers (local, OAuth, Apple, GitHub)
• Handles user registration, login, and profile management data contracts
• Provides token response structures for JWT-based authentication

Key Abstractions and Interfaces

• User entity with comprehensive profile and authentication data
• OAuth integration models for Apple Sign In and GitHub authentication
• Authentication request/response structures for login and registration flows
• Token management models with access and refresh token handling