- Why:
- formalize complete end-to-end verification for the demo DWH stack
- provide fast regression checks and full validation before demo/release
- What:
- add new TEST_PLAN.md with two execution contours: Smoke and Full
- include checks for infra bootstrap, Airflow DAG flow, STG/ODS/DDS/DM data quality, monitoring and alert provisioning
- add dedicated scenario proving dirty records are captured in ods.*_errors without breaking ETL
- Check:
- aligned steps with current DAG parameters/tasks and SQL transformation flow
- validated expected alert names against Grafana provisioning files
