feat: Add complete reviews system with star ratings

✨ New Features:
- Reviews system with 1-5 star ratings
- User can add, edit, and delete their own reviews
- One review per product per user (DB constraint)
- Automatic average rating calculation
- Review count tracking
- Interactive star selection UI
- AJAX-powered review submission
- Responsive design for all devices

🗄️ Database:
- New 'reviews' table with full structure
- Added 'rating' and 'review_count' fields to products
- PostgreSQL triggers for automatic rating updates
- Database functions for rating calculations
- Indexes for performance optimization

📦 Backend (PHP):
- Review model with 15+ methods
- ReviewController with 5 actions
- Updated Product model to include ratings
- Updated ProductController to load reviews
- 5 new API endpoints

🎨 Frontend:
- Reviews list component (_reviews_list.php)
- Review form component (_review_form.php)
- Reviews sechow page
- Star ratings in catalog view
- Interactive JavaScript (200+ lines)
- Adaptive styles (400+ lines)

🔒 Security:
- Server-side authorization checks
- XSS protection (htmlspecialchars)
- SQL injection protection (PDO prepared)
- Input validation (client + server)
- Access control for review editing

📝 Modified Files:
- app/Models/Product.php - added rating fields to queries
- app/Controllers/ProductController.php - loads reviews
- app/Views/products/show.php - reviews section
- app/Views/products/catalog.php - star ratings
- config/routes.php - review endpoints
- public/style_for_cite.less - rating styles

🆕 New Files:
- app/Models/Review.php
- app/Controllers/ReviewController.php
- app/Views/products/_reviews_list.php
- app/Views/products/_review_form.php

public/style_for_cite.less

@@ -148,19 +148,65 @@ p, li, span {
       .flex-center(10px);
       width: 200px;
       flex-shrink: 0;
+      user-select: none;
+      z-index: 1000;
 
       &__menu {
-        .menu-base();
+        position: absolute;
+        top: 100%;
+        left: 0;
+        width: 250px;
+        background: white;
+        border-radius: 8px;
+        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
+        padding: 15px;
+        z-index: 10000;
+        margin-top: 5px;
+        display: none;
+        pointer-events: auto;
+        max-height: 400px;
+        overflow-y: auto;
+        
+        ul {
+          margin: 0;
+          padding: 0;
+          list-style: none;
+        }
+        
         li {
           padding: 8px 0;
           cursor: pointer;
           transition: color 0.3s;
           border-bottom: 1px solid #f0f0f0;
+          list-style: none;
           &:last-child { border-bottom: none; }
-          &:hover { color: @color-accent; }
+          a {
+            display: block;
+            color: #333;
+            text-decoration: none;
+            padding: 5px 0;
+            cursor: pointer;
+            width: 100%;
+            &:hover { 
+              color: @color-accent; 
+            }
+          }
+          &:hover { 
+            a { 
+              color: @color-accent; 
+            }
+          }
         }
       }
-      &:hover &__menu { display: block; }
+      
+      &:hover &__menu,
+      &.active &__menu { 
+        display: block; 
+      }
+      
+      &.active {
+        background-color: #e8e8e8;
+      }
     }
 
     .search-box {
@@ -943,6 +989,67 @@ p, li, span {
   align-items: center;
   gap: 10px;
   margin-bottom: 30px;
+  
+  .stars {
+    display: flex;
+    gap: 2px;
+    
+    .star {
+      font-size: 18px;
+      color: #ddd;
+      
+      &.filled {
+        color: #ffc107;
+      }
+    }
+  }
+  
+  span {
+    color: #666;
+    font-size: 14px;
+  }
+}
+
+// Global rating styles
+.rating-stars {
+  display: flex;
+  gap: 2px;
+  
+  .star {
+    font-size: 16px;
+    color: #ddd;
+    
+    &.filled {
+      color: #ffc107;
+    }
+  }
+}
+
+// Review rating styles for product cards
+.product-rating {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  margin-top: 5px;
+  
+  .stars {
+    display: flex;
+    gap: 1px;
+    
+    .star {
+      font-size: 14px;
+      color: #ddd;
+      
+      &.filled {
+        color: #ffc107;
+      }
+    }
+  }
+  
+  .rating-text {
+    font-size: 12px;
+    color: #666;
+  }
 }
 
 .product__color-selector {