- Add user nickname update endpoint with validation
- Introduce user profile update endpoint supporting nickname and password changes
- Create UserProfileResponse DTO with nickname field
- Add SetUserNicknameRequest DTO for nickname updates
- Implement UserProfileUpdateRequest DTO for profile modifications
- Refactor UserService to UserProfileService with enhanced capabilities
- Update UserMapper to include nickname in result mapping
- Add new error codes for nickname and profile update failures
- Modify CORS configuration to allow requests from localhost:5173
- Remove obsolete AppConfig RestTemplate bean definition
- Rename UserinfoResponse to UserProfileResponse for consistency
- Adjust controller endpoints to use updated service and DTOs
- Add transactional support for user profile updates
- Improve error handling for user-related operations
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