SEKO-06: End-to-End Smoke Test — 3 Products × 3 Jurisdictions Live API

Before the ORD meeting, run a full live smoke test of the Triangle demo pipeline to catch any API failures or data gaps. WHAT: 1. Run `python demo_seko_triangle.py --live` and verify all 3 products classify correctly across US/UK/FR 2. Verify UK duty calc uses correct UKGT codes (not just HS-6 pivot) 3. Verify FR duty calc shows TVA + correct ICS2 category 4. Verify CBAM triggers ONLY for Steel I-Beam (CN 7216) 5. Verify corridor costs are reasonable (not NaN, not zero) 6. Verify --json output matches what the React UI expects 7. Test the live API endpoint: POST /api/v1/classify/multi-jurisdiction with each demo product 8. Document any failures as bugs to fix before ORD FILES: - c8_platform/demo_seko_triangle.py --live --json - AskRosetta API endpoint on Cloud Run ACCEPTANCE: All 9 cells (3 products × 3 jurisdictions) return valid data, no errors, CBAM only on steel.