Update type casting for `Response` object in MediaController tests to use `unknown as Response` for stricter type safety. Remove unused `s3Service` variable for cleanup.
Add detailed logging for S3 uploads in user and content services. Improve public URL generation logic in `S3Service` by providing better handling for `API_URL`, `DOMAIN_NAME`, and `PORT`. Update relevant tests to cover all scenarios.
Introduce `getPublicUrl` in `S3Service` for generating public URLs. Replace custom file URL generation logic across services with the new method. Add media controller for file streaming and update related tests. Adjust frontend to display user roles instead of email in the sidebar. Update environment schema to include optional `API_URL`. Fix help page contact email.
