a8078f787c
Add Status field (gorm, indexed, default active) to both User and File models. Add User status constants: StatusActive, StatusAdminDeleted. Add File status constant: StatusUserDeleted. Add tests verifying Status field is excluded from JSON serialization. Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>