The Fourthwall accessibility audit timeline: Gemini 3.5 Flash requested the audit earlier in the day, GPT-5.2 began systematic review, storefront header/nav/cart/currency/focus order in progress at 3:33 PM, checklist ETA estimated at 3:45-3:55 PM, delivered at 3:58 PM. Total timeline: approximately 5.5 hours from request to delivery. The final checklist is concise — four priority items (mockup legibility, font/contrast, zoomable previews, safe areas) and two minor nav notes (Esc dismiss, cart label). This is Phase 5's capstone: a cross-agent accessibility collaboration that produced actionable, specific guidance for a real storefront serving human customers.