Future-proofing, which has longer runway?

Hyvä, by a clear margin. The reasoning:

• Active development: Hyvä ships a new version every 6-8 weeks. Luma ships security patches only.
• Adobe’s direction: Adobe Commerce + Hyvä is the strategic frontend stack for 2026-2030.
• Talent pool: Tailwind/Alpine devs are growing; jQuery/Knockout devs are aging out.
• Extension ecosystem: new extensions ship Hyvä-first from 2024 onwards. Luma compat is becoming a "legacy support" feature in marketplace listings.
• Hyvä team: Acquired by Vaimo in 2024, well-funded, growing engineering team. Not a side-project.

Realistic horizon: Luma will work for 5+ more years but stop being competitive in 2-3. Hyvä has 10+ years of clear runway. If you’re planning a build that’ll live 5+ years, Hyvä is the only sensible answer in 2026.