Is your feature request related to a problem? Please describe.
Auron currently lacks sufficient end-to-end (E2E) test coverage, which makes it more difficult to detect execution plan changes introduced by code updates and to catch correctness issues in query results.

Describe the solution you'd like
Introduce a lightweight TPC-H dataset and add an E2E TPC-H test suite:

• Validate results for the standard TPC-H queries
• Verify query plans/operators to ensure expected execution strategies
• Make the suite easy to run locally and in CI

Describe alternatives you've considered

Additional context