https://interfacereport.com/analysis/multi-brand-design-system-architecture/Interface Reporten2026-09-23Multi-Brand Design Systems: Shared Rules, Distinct Identities https://interfacereport.com/analysis/shopify-polaris-cross-surface-design-system/Interface Reporten2026-09-23Shopify Polaris: One API Across Product Surfaces https://interfacereport.com/analysis/decagon-deco-ai-design-system-handoff/Interface Reporten2026-09-23Decagon Deco: An AI-Ready Design System in Practice https://interfacereport.com/analysis/when-a-prompt-can-ship-an-app-design-review/Interface Reporten2026-10-08When prompts ship apps, design moves to review https://interfacereport.com/analysis/design-system-is-an-instruction-file-for-agents/Interface Reporten2026-10-08Design systems become agent instruction files https://interfacereport.com/analysis/undo-is-the-feature-agent-products-are-missing/Interface Reporten2026-10-08Undo is the feature agent products still lack