- c2TabDisabled: add isSoc condition — SOC role has no access to /c2/tasks (backend 403)
- safeTab sync: useEffect before early returns using detail.data?.status; syncs
window.location.hash when hash points to a now-disabled tab after status transition
- create-mode submit button: type="submit" form="" → type="button" (form association fix)
- .tab-underline-disabled: text-graphite opacity-50 → text-steel (consistent with
btn-outline:disabled; better perceptual contrast)
- tests: 254 passing (+ SOC × C2 tab disabled assertion)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Canvas and paper were both #ffffff in light mode — cards only separated
by a 1px hairline, causing eye fatigue. Tints the canvas token to a
very pale cool neutral (#f3f5f8) so paper cards lift naturally without
shadow or radius, preserving brutalism. Dark mode tokens unchanged.
Updates DESIGN.md Surface section with rationale.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
