{"status":"ok","api_version":"1.0.0","engine_version":"tarion-engine 2.0.0 (Week 2 package refactor of ground_truth_calc_v3.py)","engine_package_version":"2.0.0","spec_version":"spec_decisions_v3.md v3.0 (2026-08-21)","dataset":{"sku_master_rows":30,"rate_table_rows":120,"fob_matrix_rows":120,"countries":["China","Vietnam","Mexico","India"],"source":"packaged","warnings":[]},"tests":{"status":"UNKNOWN","passed":null,"failed":null,"total":null,"last_run":null,"command":"pytest -q            # from the tarion-backend repository root","note":"No pytest run on record in this checkout."},"session_datasets":0}