* test(e2e): admin user registration
* ci: e2e workflow
* feat: disable rate limiting env var
* test(e2e): fix order of execution in registration tests
* ci: run e2e tests before release
* feat: parameterize PORT and MIGRATIONS_PATH environment variables
Allow configuring the server port (default: 4096) and migrations
folder path via environment variables for flexible deployment.
* fix: address PR review feedback
- Use consistent schema syntax (string? instead of key?)
- Remove config tests per maintainer request