Missing Header/Footer in app/corporate-version/about/client.tsx

Greptile flagged that after removal of legacy components, app/corporate-version/about/client.tsx is missing header/footer replacements. See Greptile review summary in PR #106.\n\nPR: https://github.com/VeritasVault-ai/vv-landing/pull/106\nRequested by: @JustAGhosT