scripts/check-phase8.sh's final gate ran once with every stage green except
stage_ui_harness's Playwright browser matrix, a deliberate fatal() never
authored by 08-05. The user approved closing Phase 8 with this gap carried
forward; 08-VALIDATION.md flips 08-W0-07 green, marks 08-W0-08 partially
verified, and sets nyquist_compliant: false honestly. deferred-items.md
records what the follow-up spec needs to do.
