chore: update lint scripts and improve formatting consistency

- Added `lint:fix` scripts for backend, frontend, and documentation.
- Enabled `biome check --write` for unsafe fixes in backend scripts.
- Fixed imports, formatting, and logging for improved code clarity.
- Adjusted service unit tests for better readability and maintainability.

backend/src/s3/s3.service.spec.ts

@@ -8,7 +8,6 @@ jest.mock("minio");
 describe("S3Service", () => {
 	let service: S3Service;
 	let configService: ConfigService;
-	// biome-ignore lint/suspicious/noExplicitAny: Fine for testing purposes
 	let minioClient: any;
 
 	beforeEach(async () => {