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.

domain/toir.api.dsl

@@ -1,3 +1,31 @@
+dto DTO.FileAttachment {
+  description "Метаданные файла в объектном хранилище (MinIO/S3); бинарные данные в БД не хранятся";
+  attribute objectKey {
+    type string;
+    description "Ключ объекта в бакете";
+  }
+  attribute originalFileName {
+    type string;
+    is nullable;
+    description "Исходное имя файла";
+  }
+  attribute contentType {
+    type string;
+    is nullable;
+    description "MIME-тип";
+  }
+  attribute sizeBytes {
+    type integer;
+    is nullable;
+    description "Размер в байтах";
+  }
+  attribute downloadUrl {
+    type string;
+    is nullable;
+    description "Ссылка на скачивание (публичная или presigned)";
+  }
+}
+
 dto DTO.Equipment {
   description "Полный response-объект для единицы оборудования";
   attribute id {
@@ -31,6 +59,12 @@ dto DTO.Equipment {
     description "Текущий статус";
     map Equipment.status;
   }
+  attribute attachment {
+    type DTO.FileAttachment;
+    is nullable;
+    description "Вложение (файл в MinIO/S3)";
+    map Equipment.attachment;
+  }
 }
 
 dto DTO.EquipmentCreate {
@@ -311,6 +345,22 @@ api API.Equipment {
       type uuid;
     }
   }
+
+  endpoint uploadEquipmentAttachment {
+    label "POST /equipment/{id}/attachment";
+    description "Загрузить файл-вложение (multipart/form-data, поле file)";
+    attribute id {
+      type uuid;
+    }
+  }
+
+  endpoint deleteEquipmentAttachment {
+    label "DELETE /equipment/{id}/attachment";
+    description "Удалить файл-вложение из хранилища и из записи";
+    attribute id {
+      type uuid;
+    }
+  }
 }
 
 api API.EquipmentStatusChange {