Design: Uplift homepage hero with real customer work and enhanced plain items section

- Replace 3 floating mockups with 2 customer work cards in hero section
- Enhance plain items section with 2-column grid layout
- Show real customer designs (Dad Bod, Cheers & Beers) instead of generic products
- Add product preview grid alongside plain items CTA card
- Cleaner, more authentic homepage that showcases customer creativity

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

.claude/settings.local.json

@@ -89,7 +89,9 @@
       "Bash(git commit -m 'Feature: Royal Mail shipping integration with weight-based postage *)",
       "Bash(git commit -m 'Add: Weight field to product admin pages *)",
       "Bash(git commit -m 'Add: Shipping selector component and checkout integration *)",
-      "Bash(node clear-pending-orders.js)"
+      "Bash(node clear-pending-orders.js)",
+      "mcp__visualize__read_me",
+      "mcp__visualize__show_widget"
     ]
   }
 }