Complete proper imports and implementation in smoke tests

[yesudeep]

Summary

The Python smoke tests have placeholder TODOs that need completion.

Locations

• python/dotpromptz/tests/smoke/package_test.py:19: # TODO: Replace this with proper imports once we have a proper implementation.
• python/dotpromptz/tests/smoke/package_test.py:31: # TODO: Failing test on purpose to be removed after we complete

Acceptance Criteria

• Replace placeholder imports with proper ones
• Remove intentionally failing tests once implementation is complete