ver. 0.287: Scontainers + ShopAttribute frontend migration to Domain

- Scontainers: frontScontainerDetails() with Redis cache in ScontainersRepository
- Scontainers: new front\Views\Scontainers VIEW, deleted factory + view legacy
- ShopAttribute: frontAttributeDetails(), frontValueDetails() with Redis cache in AttributeRepository
- ShopAttribute: clearFrontCache() per attribute/value + language
- ShopAttribute: deleted front\factory\ShopAttribute, updated 4 callers
- Tests: 476 OK, 1512 assertions (+6 frontend tests)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs/PROJECT_STRUCTURE.md

@@ -109,7 +109,7 @@ shopPRO/
 │   │   └── Tpl/                # Tpl (silnik szablonow)
 │   ├── front/                  # Klasy frontendu
 │   │   ├── Controllers/        # Nowe kontrolery DI (Newsletter)
-│   │   ├── Views/              # Nowe widoki (Newsletter, Articles, Languages, Banners, Menu)
+│   │   ├── Views/              # Nowe widoki (Newsletter, Articles, Languages, Banners, Menu, Scontainers)
 │   │   ├── controls/           # Kontrolery legacy (Site, ShopBasket, ...)
 │   │   ├── view/               # Widoki legacy (Site, ...)
 │   │   └── factory/            # Fabryki/helpery (fasady)
@@ -243,7 +243,7 @@ autoload/
 │   └── view/                       # Widoki (statyczne - bez zmian)
 ├── front/
 │   ├── Controllers/                # Nowe kontrolery frontendowe (namespace \front\Controllers\) z DI
-│   ├── Views/                      # Nowe widoki (namespace \front\Views\) — czyste VIEW, statyczne (Menu, Newsletter, Articles, Languages, Banners)
+│   ├── Views/                      # Nowe widoki (namespace \front\Views\) — czyste VIEW, statyczne (Menu, Newsletter, Articles, Languages, Banners, Scontainers)
 │   ├── controls/                   # Legacy kontrolery (fallback)
 │   ├── factory/                    # Legacy helpery (stopniowo migrowane)
 │   └── view/                       # Legacy widoki