fix: resolve duplicate imports and missing io/Context imports

src/compression_engine/lz4.rs

@@ -4,7 +4,7 @@ use std::io::Write;
 
 use lz4_flex::frame::{FrameDecoder, FrameEncoder};
 use std::fs::File;
-use std::io::{Read, Write};
+use std::io::Read;
 use std::path::PathBuf;
 
 use crate::compression_engine::CompressionEngine;