Kiro pricing change detected: typical $20 → $40/mo, floor $20 → $0/mo

Detected automatically from the vendor pricing page. Kiro offers a free tier with 50 credits, and paid monthly plans range from Pro ($20/month, 1,000 credits) to Power ($200/month, 10,000 credits), all of which allow purchasing add-on credits at $0.04 each. Pending human verification (needs_review).