refactor: Move image processing configuration to settings

Refactored image processing system to use centralized configuration in settings.IMAGE_PROCESSING_CONFIG instead of hardcoded values.

Changes:
- Added IMAGE_PROCESSING_CONFIG to settings with configurable sizes, formats, and quality
- Rewrote ImageProcessor to use dynamic configuration from settings
- Added support for multiple image formats (JPEG, WebP, PNG)
- Updated _save_image_version() to handle different formats and quality levels
- Added original image scaling (max 2160×2160) and square aspect ratio
- Updated ImageService to work with different file extensions (.jpg, .webp, .png)
- All parameters now easily configurable without code changes

Configuration:
- Original: JPEG, quality 100, max 2160×2160 (always square)
- Large: WebP, quality 90, 1200×1200
- Medium: WebP, quality 85, 600×600
- Thumbnail: WebP, quality 80, 200×200

Benefits:
- Flexible and maintainable configuration
- Smaller file sizes (WebP for resized images)
- Maximum quality for originals (JPEG 100)
- Square aspect ratio for better consistency

🤖 Generated with Claude Code

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

myproject/myproject/settings.py

@@ -127,6 +127,51 @@ STATIC_ROOT = BASE_DIR / 'staticfiles'  # Для collectstatic
 MEDIA_URL = '/media/'
 MEDIA_ROOT = BASE_DIR / 'media'
 
+# ============================================
+# IMAGE PROCESSING SETTINGS
+# ============================================
+# Конфигурация для обработки изображений товаров, комплектов и категорий
+# Определяет размеры, форматы и качество для каждого типа изображения
+
+IMAGE_PROCESSING_CONFIG = {
+    'formats': {
+        'original': {
+            'format': 'JPEG',
+            'quality': 100,
+            'max_width': 2160,
+            'max_height': 2160,
+            'description': 'Original image (4K max, JPEG format)'
+        },
+        'large': {
+            'format': 'WEBP',
+            'quality': 90,
+            'width': 1200,
+            'height': 1200,
+            'description': 'Large image (1200x1200, WebP format)'
+        },
+        'medium': {
+            'format': 'WEBP',
+            'quality': 85,
+            'width': 600,
+            'height': 600,
+            'description': 'Medium image (600x600, WebP format)'
+        },
+        'thumbnail': {
+            'format': 'WEBP',
+            'quality': 80,
+            'width': 200,
+            'height': 200,
+            'description': 'Thumbnail (200x200, WebP format)'
+        },
+    },
+    'folders': {
+        'original': 'originals',
+        'large': 'large',
+        'medium': 'medium',
+        'thumbnail': 'thumbnails',
+    }
+}
+
 # Настройки категорий товаров
 # Максимальная глубина вложенности категорий (защита от слишком глубокой иерархии)
 MAX_CATEGORY_DEPTH = 10