8134a3e8d3
All Sprint 2 (C1, C2, H2, H3, H6, H7), Sprint 3 (H4, H5, H8, H9, H10, H11, H12), Sprint 4 (T4.1-T4.6), Sprint 5 (T5.1-T5.6) tasks marked done. Burn-in harness code-complete; live 4-way run pending. Remaining open: smoke test live workflow validation (Task 1.4), benchmark alignment verification, act_runner SSH alias live test.