Feature: Add customer reviews system with admin management

- Add Review model to database with approval workflow
- Customers can submit reviews with 1-5 star ratings
- Admin can approve, reject, or delete reviews
- Public reviews page showing all approved reviews with rating stats
- ReviewForm component for easy integration on product pages
- Bulk gallery upload now properly tracked

Chore: Add expected delivery date for design approvals

- Add expectedDeliveryDate field to DesignApproval model
- Admin can set delivery date when approving designs
- Improves customer communication and expectations

Chore: Add welcome back message for logged-in customers

- Display personalized greeting on account page after login
- Shows customer's name if available

Chore: Add color difference disclaimer to product pages

- Added to StandardProductView (ready-made products)
- Added to DesignCanvas (personalized products)
- Informs customers about lighting-based color variations
- Helps manage customer expectations

Feature: Add image identification in design specifications

- Images now clearly labeled as "Image 1", "Image 2", etc.
- Images marked with purple circles in specification diagrams
- Improves clarity for production team

Documentation: Add comprehensive database optimization guide

- DATABASE_OPTIMIZATION.md - Full optimization strategies
- DATABASE_OPTIMIZATION_QUICK_START.md - Implementation examples
- DATABASE_OPTIMIZATION_MIGRATION.sql - Ready-to-run indexes
- Covers indexing, pagination, caching, and monitoring

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

src/components/StandardProductView.tsx

@@ -184,6 +184,10 @@ export default function StandardProductView({ product }: { product: ProductDTO }
             Add to bag — <Price cents={product.effectivePrice * quantity} />
           </button>
         </div>
+
+        <p className="text-xs text-muted border-t border-line pt-4">
+          💡 <strong>Color note:</strong> There may be slight color differences based on lighting and screen settings for personalized, plain, and ready-made items. Your actual item may vary slightly from the preview shown.
+        </p>
       </div>
 
       <LoginPromptModal isOpen={showLoginPrompt} onClose={() => setShowLoginPrompt(false)} />