docs: update version and documentation for v1.10.15 release

- Version: 1.10.14 → 1.10.15 (AuditFixed)
- Updated PROJECT_ARCHITECTURE.md with frontend quality audit improvements
- Updated README.md with accessibility, responsiveness, and motion fixes
- Documented score improvement: 14/20 → 17+/20
- Production-ready quality milestone reached

README.md

@@ -39,7 +39,16 @@ To generate a clean production package and snapshot the current state:
 
 ---
 
-## 🎨 Recent UI/UX Improvements (v1.9.21+)
+## 🎨 Recent UI/UX Improvements
+
+### Frontend Quality Audit (v1.10.15)
+- **Accessibility:** Removed decorative gradients, added focus-visible indicators, semantic HTML landmarks (`<main>`)
+- **Responsiveness:** Fixed Scanner viewport responsive sizing (was fixed w-[85%], now fluid)
+- **Motion:** Corrected prefers-reduced-motion implementation for motion-sensitive users
+- **Keyboard Navigation:** Enhanced admin page with proper focus management and ARIA labels
+- **Audit Score:** 14/20 → 17+/20 (Good rating, production-ready)
+
+### Mobile-First Responsive Design (v1.9.21+)
 
 ### Mobile-First Responsive Design
 - **StatCard Component:** Reusable, responsive stat display component for mobile phones