- Add environment variables for registry initialization in both `pr-test.yml` and `unit-test.yml`.
- Implement a waiting mechanism for the registry service to ensure readiness before executing tests.
- Remove redundant steps for user creation and service restart, streamlining the test setup process.
- Enhance the client code to support auto-discovery of the API prefix, improving flexibility in server URL configuration.
- Introduce comprehensive error handling in client tests to cover various edge cases and improve test coverage.
