Kiro pricing change detected: floor $0 → $20/mo

Detected automatically from the vendor pricing page. Kiro offers a Free tier with 50 credits, and paid individual tiers: Pro ($20/month, 1,000 credits), Pro+ ($40/month, 2,000 credits), Pro Max ($100/month, 5,000 credits), and Power ($200/month, 10,000 credits), all with add-on credits available at $0.04/credit. Pending human verification (needs_review).