refactor: improve formatting, type safety, and component organization

- Adjusted inconsistent formatting for better readability across components and services.
- Enhanced type safety by adding placeholders for ignored error parameters and improving types across services.
- Improved component organization by reordering imports consistently and applying formatting updates in UI components.

backend/src/auth/dto/register.dto.ts

@@ -12,7 +12,8 @@ export class RegisterDto {
 	@IsNotEmpty()
 	@MaxLength(32)
 	@Matches(/^[a-z0-9_]+$/, {
-		message: "username must contain only lowercase letters, numbers, and underscores",
+		message:
+			"username must contain only lowercase letters, numbers, and underscores",
 	})
 	username!: string;