Add file attachment functionality for equipment management

- Introduced DTO for file attachments with metadata (objectKey, originalFileName, contentType, sizeBytes, downloadUrl).
- Updated Equipment DTO to include an optional attachment field.
- Implemented endpoints for uploading and deleting equipment attachments.
- Enhanced Equipment service to handle file storage and retrieval using S3.
- Updated EquipmentEdit, EquipmentList, and EquipmentShow components to support file attachment input and display.
- Configured S3 settings in docker-compose and environment files.

server/.env.example

@@ -4,3 +4,16 @@ CORS_ALLOWED_ORIGINS="http://localhost:5173,https://toir-frontend.greact.ru"
 KEYCLOAK_ISSUER_URL="https://sso.greact.ru/realms/toir"
 KEYCLOAK_AUDIENCE="toir-backend"
 KEYCLOAK_JWKS_URL=""
+
+# MinIO / S3 (вложения оборудования)
+S3_ENDPOINT="http://localhost:9000"
+S3_REGION="eu-central-1"
+S3_BUCKET="media"
+S3_ACCESS_KEY_ID=""
+S3_SECRET_ACCESS_KEY=""
+S3_FORCE_PATH_STYLE="true"
+# Если бакет публичный: базовый URL для прямых ссылок (без presign)
+S3_PUBLIC_BASE_URL=""
+# Префикс ключей объектов в бакете
+S3_OBJECT_PREFIX="toir-light/equipment"
+S3_PRESIGN_EXPIRES_SECONDS="3600"