[EcstaceeLOR]

Summary

• Add a privacy-safe public checkout progress contract.
• Derive live progress from the stored payment intent plus current Nimiq RPC verification.
• Attach progress only on individual checkout-in-progress product detail responses; catalogue lists remain lightweight.
• Reuse the five-step payment tracker on public product pages.
• Poll the product every 5 seconds while checkout remains active so the UI advances and transitions to Completed automatically.
• Never expose buyer address, payment tag, transaction hash, or other buyer-specific identifiers.
• Add backend and frontend regression tests, including 24 / 60 confirmation progress.

Fixes #113

[vercel]

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Project	Deployment	Actions	Updated
nimtrace	Ready	Preview	Sep 24, 2026 12:18am UTC